Forberg Scientific Inc

AI-Tek Side Look Sensor Used for Speed Take Off

2012-02-23T08:00:00.000-05:00

The Side Look Sensor has been developed by AI-Tek Instruments for Allison automatic transmissions for trucks ranging from light duty vans to over the road tractors. It is available for Allison AT, MT and HT transmissions. The new Side Look Sensor improves on earlier designs developed for Allison to replace a mechanical speed system.

The Side Look Sensor is a variable reluctance device that provides electronic transmission speed inputs to engine control systems and/or electronic dashboards. It mounts directly on the transmission and employs a unique magnet configuration that induces a magnetic field on the side of the sensor in the path of the rotating transmission gear. This system with its fewer mounting parts improves reliability, reduces weight and conserves space over the earlier designs.

The new Side Look Sensors uses a molded, glass filled nylon body to protect the sensor in harsh, truck-operating environments. It replaces the old fly-lead design with an integral standard Packard connector, which eliminates the added extra connector cost of the old design. It is available in single and dual output versions.

The Side Look Sensor is manufactured in the United States. AI-Tek Instruments Distributors stock the Side Look Sensor for off-the-shelf maintenance, repair and overhaul (MRO) requirements.

Single Coil:
P/N: 70082-1000-021
P/N: 70082-1000-023

Dual Coil:
P/N: 70082-1000-022
P/N: 70082-1000-024

If you would like more information about these AI-Tek Side Look Sensors or other AI-Tek products please contact Forberg Scientific, Inc. customer service.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

Flow Meter Versatility for Industrial Applications Porter P-Series

2012-02-22T08:00:00.000-05:00

Parker's New P-Series Flow Meters Deliver Greater Application Versatility For Industrial Customers
The Porter Instrument Division of Parker Hannifin, the global leader in motion and control technologies, has unveiled the expanded P-Series variable area flow meter product line, an all-new range of flow meters that provides significantly greater application versatility for industrial applications. The expanded P-Series offering enhances Parker’s existing rotameter product line in acrylic, glass and metal tube flow meters. The new products are designed to accommodate greater flow rates, temperatures and environmental conditions.

The P-Series line extension gives customers more choice when sourcing flow measurement and control devices in applications such as oil and gas production, food manufacturing, power generation, chemical and petrochemical, and pharmaceutical manufacturing. The new variable area product line expands the Porter Instrument flow meters range to include:

Gas flows up to 350 sft3/m (9910 slpm) of air
Liquid flows up to 450 US gpm (1700 lpm) of water
Pressures up to 4000 psig (275 Bar)and higher (on special request)
Temperatures up to 575o F (300o C) and higher (on special request)
NEMA and IP enclosures for weatherproof applications
Intrinsically safe transmitter and alarm options
Certified calibrations conforming to ISA RP 16.6, NIST traceable
High accuracy and repeatability
An extensive selection of materials of construction and elastomeric seals to suit a wide range of gases, fluids and environmental conditions

This new line extension, coupled with the Porter Instrument reputation for responsive support and on-time delivery, will give customers the greater product range they need along with the superior service they have come to expect from a world class provider.

The Porter Instrument Division specializes in the development, manufacture and sale of precision instruments for the measurement and control of gases and liquids. Porter Instrument flow and pressure control instruments, both standard or modified to customer design requirements, excel in some of the world's most performance-critical applications. They play a vital role in the production of computer chips; they are trusted for the regulation and measurement of anesthetic gases in operating rooms worldwide; and they aid in the production of pharmaceutical drugs, cutting-edge biotech research, dental patient sedation and environmental monitoring, among many other applications.

If you would like more information about Porter Instrument P-Series flow meters or other Porter Instrument products please contact Forberg Scientific, Inc. customer service.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

AI-TEK DH SERIES Hall Effect Sensors

2012-02-21T19:44:00.000-05:00

AI-Tek has taken its years of experience of designing and manufacturing Hall Effect sensors for harsh applications and has developed a line of durable products for industrial, rail, military and automotive use.

The new AI-TEK DH series sensors are differential based, zero-speed, precision, single channel, speed sensors. At power-up, they calibrate themselves to the unique magnetic signature of their installed application and continue to update the calibration as the sensor is running. This unique combination of differential sensing technology and calibration make these sensors highly tolerant of installation mis-alignment, target geometry and composition, target run-out, vibration and air gap changes.

In comparison, the RH series are single-element based, zero speed, single channel speed sensors and are an excellent choice for general purpose speed sensing. Unlike the DH series that requires rotational alignment at installation, the RH series requires no alignment. Air gap adjustment is precise and easy and similar to a VR type sensor.

The new DH sensor can sense each change in target movement, regardless of speed, from near zero to 15 kHz frequency range, generating a steady pulse train of frequency proportional to target speed. Typically, each time a gear tooth (or any ferrous discontinuity) passes in front of the sensor the output changes state. This type of sensor is known as a "P" type because it uses N-P-N transistor logic (as opposed to "N" type, which uses P-N-P transistor logic).

Key Features:

Reverse voltage protection, up to -30 Vdc, to prevent damage if miswired

High temperature range of -40C to +125C

Wide range of supply voltage in single design of 4.5 - 24 Vdc

Two output options of Supply Tracking or TTL Compatible

Rugged design meeting IEC 77 Standards (European Railroad Applications)

Require special alignment

Improved duty cycle

Improved fine pitch performance

Increased air gaps

Suitable for 32 diametral pitch or coarser gear (target), the standard catalog sensors are easily applied to your various sensing needs. If you have a unique, special requirement which cannot be met with any of the standard options, we will gladly review your specs and work with you on a special sensor design.

If you would like more information and pricing about AI-TEK Speed Sensors or other AI-TEK items please contact Forberg Scientific, Inc. Customer Service.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

Advantages of Wika Liquid-filled Gauges

2012-02-20T08:00:00.000-05:00

Liquid-filled gauges
Liquid-filled pressure gauges provide a number of advantages:

The liquid absorbs vibration and pressure spikes
The dampening action of the liquid enables the operator to
take readings during conditions of rapid dynamic loading and
vibration
The liquid lubricates all moving elements, dramatically
reducing wear in the movement
Because most liquid-filled gauges are filled with non-aqueous
liquid and hermetically sealed, they perform in corrosive environments
and are immune to moisture penetration and icing
and shock effects are lessened

Liquid-filled gauges enhance the reliability and integrity of the measuring system for long periods under extreme operating conditions.

Liquid-fill fluidAmbient Temperature Ratings (Table A)

Allowable operating range

Temperature range in which the operation of the gauge is not adversely affected by the filling liquid. At temperatures above the maximum rating, the fluid may break down. At temperatures below the minimum rating, the fluid may solidify (freeze).

Choose the right liquid

The type of liquid used to fill the gauge varies with the application. Although pure glycerine provides the best performance in most applications, each has its own requirements. Guidelines to help ensure that a fluid is properly matched to an application are:

If icing is a problem, use gauges filled with silicone oil or other comparable liquids. They have low viscositieseven at -60C
If the system has electric accessories, such as contacts, use insulating oils
If extreme temperature fluctuations are expected, use silicone oils

The higher the liquid viscosity, the greater its dampening capacity. The reason for this is that dampening changes in proportion to the temperature-dependent viscosity of the filling liquid. The suitable degree of dampening depends on the operating requirements the gauge must meet, such as pointer response time, pressure extremes, vibration and changes in pressure. WIKA can recommend specific liquids to suit problem applications.

Liquid-filled gauge case venting

For pressure gauges with full scale ranges of 300 psi and below (including vacuum and compound ranges of 30" Hg-0-200 psi and below), case venting (after the gauge is installed) is necessary to preserve the accuracy. Temperature fluctuations during shipment and in the process application cause the liquid filling to expand and contract which in turn increases or decreases case pressure. As a result, accuracy can be decreased and the pointer may not return to zero properly until the gauge is vented to the atmosphere.

To vent a WIKA gauge, move the valve to the open position which will release any pressure or vacuum built up in the case. If the gauge is installed in an upright position, the lever can be left in the open position. The lever allows the use of a gauge in a non-upright orientation.

If you would like to get more information about WIKA pressure gauges or other WIKA products please contace Forberg Scientific, Inc. customer service.
Toll Free: 1-855-288-5330
Email: mechanicalsales@forberg.com

Selecting a Pressure Gauge

2012-02-19T20:19:00.000-05:00

When selecting a pressure gauge, it is important to consider the following factors to ensure safety and accuracy:

1. Pressure fluid composition
2. Pressure fluid temperature
3. Ambient conditions
4. Pressure range
5. Conditions affecting wear of the system
6. Method of mounting
7. Required accuracy

1. Pressure fluid composition
Since the sensing element of a pressure gauge may be exposed directly to the measured medium, consider the characteristics of this medium. It may be corrosive, it may solidify at various temperatures or it may contain solids that will leave deposits inside the sensing element. For pressure fluids that will not solidify under normal conditions or leave deposits, a Bourdon tube gauge is acceptable. Otherwise a Sealgauge or diaphragm seal should be used. A chemical compatibility chart follows this section to aid in the selection of the proper sensing element material.

2. Pressure fluid temperature
Steam and other hot media may raise the temperature of the gauge components above safe working limits of the sealed joints. In these cases it is recommended that a siphon, cooling tower or diaphragm seal be used in conjunction with the pressure gauge.

3. Ambient conditions
The normal ambient temperature range for WIKA pressure gauges is -40F to +140F (-4C to +60C) for dry or silicone-filled gauges and -4F to +140F (-20C to +60C) for glycerine-filled gauges. The error caused by temperature changes is +0.3% or -0.3% per 18F rise or fall, respectively. The reference temperature is 70F (20C). The correction is for the temperature of the gauge and not the temperature of the measured medium. Remote gauge mounting using a diaphragm seal and capillary line is one alternative for applications involving extreme ambient temperature. Moisture and weather effects must also be considered. Liquid-filled gauges prevent condensation build up. For outdoor use, stainless steel, brass or plastic cased gauges are recommended.

4. Pressure range
A gauge range of twice the working pressure is generally selected. The working pressure in all cases should be limited to 75% of the gauge range. Where alternating pressure and pulsation are encountered, working pressure should be limited to 2/3 of the gauge range.

5. Conditions affecting wear of the system
In applications involving severe pressure fluctuation or pulsation, the use of restrictors and/or snubbers is recommended. In addition, liquid-filled gauges increase the service life of gauges in these conditions. WIKA liquid filled gauges are generally filled with glycerine. Silicone for larger temperature extremes and Halocarbon® for use with oxidizing agents such as chlorine, oxygen and hydrogen peroxide are also available.

6. Method of mounting
Radial (LM) and back (CBM or LBM) connections are available for most WIKA gauges. WIKA stocks gauges with standard NPT threaded connections. Other types such as metric threads, straight threads, hose barbs and special fittings are available as a special order. Pressure gauges should be mounted in the upright position. For applications where the gauge is mounted side ways, horizontally or upside down, contact WIKA or Forberg Scientific Inc. Customer Service for gauge type compatibility.

7. Required accuracyWIKA stocks gauges with accuracies from ± 3/2/3% to ±0.1% of span (ASME Grade B to Grade 4A).

To ensure safe and accurate gauge selection, you must take all of the above factors into consideration. When in doubt, please do not hesitate to contact Forberg Scientific Inc. Customer Service for assistance!
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

United Electric Controls Pressure & Temperature Plant Safety Solutions

2012-01-24T14:05:00.000-05:00

Whether it’s protecting valuable equipment, processes or your loyal employees, creating a safe work environment is a corporate responsibility. Installing safety instrumentation not only protects critical equipment and processes; it also creates a safe work environment for your employees and a healthier environment for us all.

UE’s One Series digital pressure and temperature switch comes with complete Failure Modes, Effects and Diagnostics Analysis (FMEDA) data from Exida, enabling plant safety personnel to reliably calculate Safety Integrity Levels (SIL). The rugged One Series is installed in the field, at the point of critical monitoring, with response times 5X faster than a transmitter, providing immediate, local shutdown, while streamlining wiring and software. For your plant safety requirements, simplify and improve reliability with the One Series for all critical pressure and temperature shutdown applications.

Direct-Acting Safety Shutdown

The rugged and reliable One Series pressure and One Series temperature switch protects equipment, processes and personnel. It is installed where needed, in the field, with direct-acting on/off digital switching. With 0.1% repeatability combinded with solid-state reliability and on-board diagnostics, the One Series is the clear choice for critical plant safety applications.

Faster Response Time Than A Transmitter

Plant safety requires immediate response to dangerous conditions. The One Series response time is 60 mS, five-times faster than a process transmitter. And, with direct switching capability at the point of critical conditions, it provides an alternative technology to the overreliance on transmitters and central control systems, eliminating the possibility of “Common Mode Failure.”

ONE SERIES

Electronic Pressure, DP & Temperature Switches

• Fully adjustable set point and deadband

• 5X faster than a transmitter and 50% less installed cost

• Digital display includes process, status and self-diagnostics

• 2-wire and loop-powered 4-20 mA models available

• Measures gage pressure, differential pressure or temperature

• 0.1% repeatability with temperature compensation

• Provides the functions of a switch, gauge and transmitter

• Ranges to 6000 psi (410 bar), 200 psid (13.8 bar), 1000˚F (538˚C)

On-Board Diagnostics

The One Series continually checks health status for circuit and sensor integrity, providing extra assurance that it stands ready to perform when needed. In addition, it provides a “pulsed” output that can be activated to help distinguish a critical alarm or shutdown signal above the frequent control room “noise” of false trip signals that may be ignored or disabled at operator discretion.

Suitable For SIL2 Applications

Request the "EXIDA" Failure Modes, Effects, Diagnostics Analysis (FMEDA) report from UE covering the One Series, enabling you to calculate the Safety Integrity Level (SIL) for your applications. Also request the SIL Verification Summary report to compare the One Series with generic switches and transmitters. Go to www.ueonline.com for copies of these 3rd party reports.

I AM WORKING (IAW):

The Role of Self-Diagnostics in SIS Applications

All One Series electronic switches include powerful self-diagnostics. Critial functions of the One Series are checked during initialization, and then continuously monitored by the IAW® algorithm. Detected faults are reported using three methods of annunciation:

The local digital display provides clear fault indications at a glance
Each fail-safe switch will open, providing a remote fault indication
On models that include 4-20 mA output, the analog signal will indicate 0, 3.5, 22 or 24 mA, depending on the type of fault.

IAW PROGRAMMING MODE AND RESULTING SWITCH STATES

The fail-safe-open IAW® programming mode provides a predictable annunciation that differentiates between an upset process variable and a detected fault using a single discrete “switch” output.

When process and instrument conditions are normal, the One Series switch is pulsed, sending out a continuous heartbeat signal that is easily detected by the safety PLC.

When the process variable reaches the programmed set point, the One Series switch will close, indicating that the process is upset but the One Series remains functioning (no faults detected).

If the switch opens, this condition indicates a fault detected by the IAW® self-diagnostics. The reporting scheme also accounts for wiring integrity. If a wire is broken or power is lost, this type of “fault” would also appear as an open switch to the safety PLC.

For more infromation on how the One Series from United Electric Controls can maximize your plant safety efforts please contact Forber Scientific, Inc. customer Service

Toll Free: 855-288-5330

Email: mechanicalsales@forberg.com

Vist: www.forberg.com

Active & passive temperature compensation of pressure sensors

2012-01-13T09:01:00.000-05:00

Author: Dominik Lorenz
Posted: Knowledge

How does an active or passive temperature compensation of pressure transmitters actually work? High-quality pressure transmitters, especially those used in precision critical applications, are almost always provided with an individual temperature compensation. But what is actually the difference between an active and a passive temperature compensation of these sensors?

Passive temperature compensation:
Sections of the characteristic accuracy curve of the pressure sensor are measured at different temperatures during the manufacturing process. Then, the previously determined temperature errors are compensated by passive elements (resistors) within the electronics of the sensor or by corrections of specifically designed resistance structures directly on the sensor element itself (e.g. by laser-trimming). The (passive) resistor elements used have an almost linear temperature behaviour, it is, however, only possible to compensate 1st order errors. Temperature errors of higher order, i.e. strong bending of the characteristic curve under temperature, can not be compensated.

Active temperature compensation:
Here too, the characteristic curve of the pressure transmitters is measured at different temperatures during the manufacturing process. However, the pressure transmitter has an additional integrated temperature sensor which constantly measures the temperature of the sensor and transfers it to the pressure transmitter’s signal processing. In practice, two methods of active temperature compensation are common: the first method compensates by means of a limited number of samples, , i.e. discrete correction values, between which interpolation takes place. The second method uses the electronics of the transmitter and a higher-order equation resulting from the regression of the acquired measurement values in order to compensate then the expected error.

During operation, this signal processing makes it possible to automatically, i.e. “actively”, compensate the pressure transmitter‘s temperature error using the calculated correction factors within a specified temperature range 50-140°F (e.g. 10-60°C).

The most commonly used method to minimise temperature errors of pressure sensors is a passive temperature compensation. This is the traditional method which is widely used. However, active temperature compensation is the top class of possible compensation methods. WIKA has constantly improved and refined this technology in recent years.

The pressure transmitters of WIKA using active temperature compensation therefore feature a temperature error which is almost zero in their specified temperature range.

If you would like to get more information about WIKA pressure transmitters or other WIKA products please contace Forberg Scientific, Inc. customer service.
Toll Free: 1-855-288-5330
Email: mechanicalsales@forberg.com

Pressure Transmitters Applications for Wind Turbines

2012-01-11T16:48:00.000-05:00

Pressure Transducer Usage Wind Turbines for Alternative Energy Generation in Energy and Power Generation

Author: Wika

From: Application Notes

Wind Turbines

As today’s society looks for forms of alternative energy and ways to distance ourselves from fossil fuels, wind power has emerged as a major player in the alternative energy market. Wind turbines function by converting the kinetic energy of wind into mechanical energy to rotate the wind turbine rotor. The rotor connects to an alternator or electrical motor which converts the mechanical energy into electrical energy for storage and consumption.

Maximizing wind turbine efficiency requires turbine placement where steady winds are present and wind turbine alignment with the wind. Alignment with the wind requires use of a wind vane and yaw controller, frequently hydraulically powered and monitored through use of a pressure transducer. As wind speeds approach the survival speed, the speed at which the wind turbine with begin to fail both mechanically and structurally, the blade angle of attack or pitch must be increased in order to stall the blade and prevent the turbine from spinning out of control. Hydraulic control systems use pressure transducers for wind turbine pitch control. The following diagram indicates the basic components of wind turbines.

Pressure Transducer Application to Wind Turbines in Alternative Energy Generation Applications

Pressure Transducers are used for Wind Turbines in Energy and Power Generation in the following Alternative Energy Generation Applications

Yaw Hydraulic Cylinder Pressure Measurement and Control
Pitch Hydraulic Cylinder Pressure Measurement and Control

Alternative Energy Generation Wind Turbines in Energy and Power Generation applications call for pressure transducer material compatibility with standard hydraulic fluids and with 24-hour-a-day, reliable operation. Pressure transducers are responsible for indicating pressures within the hydraulic cylinders in charge of yaw and pitch control. The WIKA S-10 and WIKA A-10 electronic pressure transducers have been designed for reliable performance in Energy and Power Generation Alternative Energy Generation applications like Wind Turbines.

Pressure Transmitter Selection Considerations

High reliability
Temperature compensation
Vibration resistance
Compatibility with hydraulic fluid

If you would like more information about Wika Pressure Transmitters or other Wika Products please contact Forberg Scientific, Inc. customer service.

Toll Free: 1-855-288-5330
Email: mechanicalsales@forberg.com

KNF Diaphragm Micropump for Air & Gas

2012-01-10T09:57:00.000-05:00

KNF Neuberger’s Type NMP05 diaphragm micropump, designed for sampling air and gases, combines high performance with precision miniature packaging to deliver smooth-running, efficient and reliable operation for a wide range of portable, battery-operated equipment applications. According to the company, the pump:

Measures 17mm (width) by 26mm (height) by 31mm (length) and weighs as little as 18 g.
Provides an ideal solution for industrial hygiene devices, air samplers and medical analyzers, among many other uses.
Features a bolted-on pump head (ensuring excellent gas tightness) and an innovative molded diaphragm with structured surface (enabling maximum end vacuum and extended lifetime).
A variety of economical, low-current and robust brush-type DC motors, or premium, longer-life, ironless-core DC and BLDC motors with integrated electronics, featuring low EMI/RFI can be specified.
A unique valve system that promotes low aerodynamic loss and optimized flow.
Oil-less operation that allows for uncontaminated flow of the pumped medium.
Requires no maintenance.
Can achieve flow rates to 450 ml/min., continuous vacuum to 500 mbar (15.2 in. Hg) and continuous pressure to 150 mbar (2.2 psig).
Can be mounted in any position and can be modified or otherwise customized to satisfy particular application requirements.

Download the KNF Neuberger Model NMP data sheet (click here)

If you would like to receive pricing and availablity on this KNF Neuberger Pump or other KNF Pumps please contact Forberg Scientific Inc. customer service.
Toll Free: 1-855-288-5330
Email: mechanicalsales@forberg.com

How to drain liquids at high pressure

2012-01-09T08:51:00.000-05:00

Author: David Connaughton
Blog: Compressed Air The Fourth Utility

Occasionally customers have high pressure compressed air or natural gas lines that need to be filtered to remove oil and water contamination. The problem is, how do you drain out the accumulated liquids? Most automatic drains have a maximum pressure of 150 psig (10 bar), well below the pressure of the filtration vessel. Attaching a valve to the drain could create a dangerous situation. In the diagram above, draining is accomplished by utilizing two valves and a small receiver tank rated at the same pressure as the filter vessel. The receiver could even be a length of pipe as long as its volume is sufficient to hold the amount of liquid that is expected to accumulate between draining. The draining is manual. Initially, the valve closest to the filter vessel is left open to allow liquids to drain into the receiver and must be accomplished by closing the top valve near the filter vessel and opening the bottom valve slowly. It is important to open the bottom valve slowly and carefully because the receiver is at operating pressure. Naturally safety gear like goggles, etc. should be worn.

TURCK Analog I/O Module Increases Application Flexibility With Current and Voltage Signal Combination

2012-01-06T09:48:00.000-05:00

TURCK announces the release of its new 4AI4AO-VI analog I/O module, which is compatible with two of the company’s BL distributed I/O products: BL67 and BL Compact system. Featuring four analog inputs for current or voltage and four analog outputs for voltage, the module provides both control and feedback in one convenient package.
The 4AI4AO-VI is designed for use with TURCK’s BL67 modular I/O system and BL Compact system. BL67 combines all of the flexibility of an in-the-cabinet I/O system with modularity, ruggedness and connectorization, while the BL Compact system is a revolutionary on-the-machine solution that obtains and transmits signals via diverse fieldbus protocols, without requiring a protective enclosure. Supporting both M8 and M12 I/O connectors and offering compatibility with a variety of communication protocols, such as Ethernet/IP, DeviceNet, CANopen and Modbus TCP, the BL family provides a high degree of I/O versatility for a wide range of applications.

“The combination of both voltage and current analog signal types in one module provides users with unique I/O flexibility,” said Don Eichman, Product Specialist for TURCK. “The signal duality of the 4AI4AO-VI, which merges control and feedback functions into a single I/O card, and its compatibility with our already versatile BL family allows our customers to increase overall efficiency, reliability and accuracy for any I/O application.”

For enhanced application compatibility, the 4AI4AO-VI is ruggedly constructed to withstand diverse environmental challenges. Operating in temperatures ranging from -40 to 70 degrees Celsius, rated to IP67 and UL listed, the module provides optimal performance in applications that yield extreme temperatures, moisture, shock or vibration—accommodating even the most demanding application requirements.

If you would like to receive more information about this TURCK item or other TURCK products please contact Forberg Scentific Inc. Customer Service.
Toll Free: 1-855-288-5330
Email: processsales@forberg.com

Read the full story at http://www.prweb.com/releases/2012/1/prweb9076434.htm

Burkert 'Close Control Loop' New Ball Valve, Actuator & Positoner

2012-01-05T09:31:00.000-05:00

Burkert UK has expanded its range of products for providing complete process solutions in the food, pharmaceutical, bio-technology, medical and water treatment sectors (et al), with the introduction of a range of 2/2 stainless steel ball valves, available manual or complete with quarter turn single or double acting rotary actuators, and the facility for low cost positioning control via Burkert’s innovative side control positioner.

Supplied in port sizes from ¼” to 4”, threaded, flanged, weld or clamp ended, and suitable for use up to +120 degrees C (and down to -10 degrees C), the 2652 and 2655 ball valves are equipped with stainless steel PTFE seals for use with gaseous and liquid media. They are supplied with quarter turn pneumatic rotary actuators, which have optical position indicators, mechanical feedback and pilot valve connections for NAMUR pilot valves, or Burkert Side Control positioners.

“Our ball valve/actuator/positioner combination provides process users with a compact modular system for fluid icontrol at a very competitive cost with fast delivery.” said Neil Saunders, Sales Manager of Burkert UK. “Ball valves are used extensively in process systems, due to their full flow capabilities and their abilities for use at higher viscosities, temperatures and pressures. With the introduction of the 2652 and 2655 units, we have plugged a gap in our range. Burkert is now a complete systems and solutions provider to process markets, as evidenced by our new Batch control packages and our manufacture of glass fermenters. This means that we are able to supply everything a customer requests on a project - including ball valves: a requirement that we are now well equipped to flexibly satisfy.”

Complementing the 2652/2655 units for more precise valve operation is Burkert’s low cost type 8791 BASIC positioner. Suitable for a wide range of applications, the 8791 BASIC is ideal for use in harsh environments due to its protection class IP65/67. It is also extremely flexible offering the ability to be mounted in various orientations to linear and rotary actuators, according to IEC534-6 and VDI/VDE 3845 (Namur), as well as to Bürkert process valves.

Offering - at a price comparable to analogue devices - the key benefits of simple start-up and easy operation, high accuracy, no internal air consumption and high levels of protection, the 8791 BASIC delivers a reliable and flexible solution across a wide range of applications, in sectors such as Hygienic Processing, Water treatment Steam and Gas Handling, mainly in the control of auxiliary processes -water, steam, air, heating and cooling.

Housed in an aluminium/ stainless steel IP65/67 enclosure, the 8791 BASIC is a compact and robust device offering users the benefits of simple operation, via DIP switch and two keys protected in its housing, and high levels of system resolution (≤ 1%) across its 0/4…20mA operating range.

If you would like more information about Burkert products please contact Forberg Scientific Inc. customer service.
Toll Free: 1-855-288-5330
Email: mechanicalsales@forberg.com

LED Display & Programmable Solid State Switches Wika PSD-30 Pressure Transmitter

2012-01-04T10:55:00.002-05:00

Wika Instrument Corporation (WIKA) is pleased to announce the PSD-30 with integral LED display and programmable solid state switches is now available. The PSD-30 is designed for use as an intelligent "multi-function" pressure transmitter for many industrial control applications.

The design and outstanding functionality of the PSD-30 received the IF Product Design Award in 2009. The display, with its .35" ( 9 mm) high digits, is designed to be as large as possible and positioned at an angle, so the pressure reading is visible from a distance of at least 10 feet (3 meters). Time-proven and rugged LED technology with 14-segment display is used so alphanumeric messages are much easier to understand compared to typical 7-segment displays.

The PSD-30 is designed for pumps and compressors, machine tools, machine building, hydraulics and pneumatics, and many other industrial applications.

The WIKA PSD-30 special features include:

Available with single or dual NPN or PNP solid state switches
High visibility, rugged 14-segment red LED display
Electronically rotates 180° for top-down installation
Independent rotation between the M12x1 electrical connection and the display
User-friendly, intuitive 3-key operation
Versions with 4-20 mA or 0-10V analog output
Programming menu meets VDMA standards for user friendly navigation

Wika Model: PSD-30 Transmitter data sheet (click here)

If you would like more information about the Wika Model: PSD-30 Transmitter please contact Forberg Scientific Customer service.

Toll Free: 1-855-288-5330

Email: mechanicalsales@forberg.com

Protect you refrigerated air dryer with proper filtration

2011-12-04T20:45:00.001-05:00

Author: David J. Connaughton
Blog: Compressed Air the Fourth Utility

Refrigerated dryers rely on HCFC (Hydrochlorofluorocarbons) to cool compressed air and therefore lower the dewpoint of the compressed air. In a new system, the cooling is quite efficient and dewpoints of as low as 35F (2C) can be achieved with a refrigerated dryer. Over time, the cooling coils lose their efficiency due to pipe scale, oil and water build up on the cooling coils. It is not uncommon to test dewpoints after a refrigerated dryer and find them >60F (16C). The indicators on the front of refrigerated dryers do not indicate the dewpoint but rather the temperature of the coils. Therefore, Balston recommends that you install a a coarse coalescing filter (grade DX) - immediately upstream of the dryer. To prevent carryover of condensate from the dryer or carryover of any pre-existing oils for a used dryer, a final fine coalescing filter (grade BX) is recommended.

If you would like more information about Parker Balston please contact Forberg Scientific Customer Service.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

Direct Drive Gauges Wika New Direct Drive Process Gauge & Direct Drive Test Gauge

2011-10-04T10:16:00.000-04:00

Direct Drive Technology: “Battle Proven” Performance in a Process Gauge

The military has used direct drive gauges on aircrafts, tanks and submarines since the 1960s for one simple reason: they are extremely resistant to shock, vibration and pulsation. Direct drive gauges have been known to survive direct missile strikes when placed within the hulls of battleships during military testing. Over time, direct drive gauges have proven themselves in numerous mission critical applications like jet fighter struts, tank gun turrets and submarine ballast tanks. Imagine having this same “battle proven” performance in a process gauge for your mission critical applications!

At the technological heart of the WIKA Direct Drive process gauge is our exclusive Bourdon tube made of Inconel® X-750 alloy. Compatible with most media types, this super-alloy is highly resistant to temperature extremes and has excellent oxidation and corrosion properties. Every WIKA Bourdon tube is meticulously handmade and then stress relieved in our proprietary heat treatment chambers. To provide superior strength and performance in the most aggressive environments and temperature extremes, all wetted parts on the WIKA Direct Drive process gauge are nickel-brazed.

Features

Medical-grade pointer shaft that rotates on a jeweled sapphire bearing that eliminates pointer friction
External adjustment screw to re-zero the pointer n Porous filter to protect the pressure inlet from clogging
Thermoplastic case for extreme temperatures
Shatterproof polycarbonate window
150% overpressure protection without any loss of calibration
Solid-front, blow out back safety case design to meet industry safety requirements

WIKA Direct Drive gauges are manufactured in the United States and come with a full 6-year warranty that beats the competitors’ warranties 6 to 1.

Technical Specifications Overview

Wika Direct Drive Process Gauge: Model 232.34DD
The WIKA Direct Drive process gauge comes with a process industry standard ASME B40.100 Grade 2A (+/-0.5% of span) accuracy; a silicone dampened Bourdon tube to eliminate pointer flutter in severe vibration and pulsation applications; an adjustable process gauge pointer for recalibration; and a yellow case to signify to workers that this gauge is used for the tough applications.

Wika Model 232.34DD Datasheet

Wika Direct Drive Test Gauge: Model 332.34DD
The WIKA Direct Drive test gauge has a calibration industry standard ASME B40.100 Grade 3A (+/-0.25% of span) accuracy; a knife-edge adjustable pointer for precise pressure readings; a mirror band dial to remove reading error; a calibration certificate traceable to the National Institute of Standards and Technology (NIST); and standard black case.

Wika Model 332.34DD Datasheet

Advantages of the WIKA Direct Drive gauge over conventional gauges include:

Very long service lifen Excellent for problem applications that contain shock, vibration or pulsation
Contains only one moving part

No gears, linkages or springs to wear or break
No loss of accuracy
No recalibration required

Performance of a liquid-filled gauge in a dry case

WIKA Direct Drive gauges are great solutions for these problem applications:

Environments that contain continual shock and vibration
Processes that have problems with pressure surges and spikes
Pressure systems that have high cyclic rates
Installations with temperature extremes

If you would like additional information about WIKA Direct Drive Process Gauges, Wika Direct Drive Test Gauges or other WIKA Products please contact Forberg Scientific, Inc.
Toll Free: 855-288-5330Email: mechanicalsales@forberg.com

Burkert Decentralised Automation at all Process Level

2011-09-30T14:56:00.000-04:00

Intelligent control heads enable complete decentral automation of hygienic production processes, by Chris Hoey

In the food and beverage industry, and also in the production of medicines and cosmetics, excellent hygiene in processes and around the plant plays a key role. This is ensured by stringent legislative regulations. Standards such as HACCP (Hazard Analysis and Critical Control Points) for food processing and GMP (Good Manufacturing Practise) for FDA-compliant processes in the pharmaceutical industry define extremely stringent requirements for cleanliness, safety and product quality. In addition, legislation requires that all processes must be constantly monitored and documented in these areas. In an increasingly competitive global environment, companies of this industry are at the same time forced to make their production processes as efficient and cost-effective as possible, in addition to optimising processes. As a consequence, there is an ever increasing demand for automation at all process and auxiliary circuit levels.

Pneumatically actuated process and control valves play a key role in the manufacture of foods and beverages, in milk processing and in the pharmaceutical and cosmetic industries. They are the core element of practically every production plant, where they perform numerous different tasks. However, the economical and hygienic aspects of these process fittings in a centrally controlled automation process are not unproblematic. Classical control systems using switch cabinets with valve terminals, I/O system and field bus interface involve considerable expense especially in complex facilities. With this technology, the fittings at the field level are connected to the control units in the switch cabinets through a large number of long control air lines and discrete feedback connections. Apart from planning and installation requirements for such solutions, they are not entirely optimal as regards hygiene. According to HACCP, every additional control air and feedback line within the production plant is a potential source of contamination and other risks and must therefore be monitored, serviced, cleaned and documented regularly, which is a costly undertaking.

In shop floor practice the control air lines can be quite long, which increases air consumption and has a negative effect on the switching times of the fittings. The situation is worsened even more by the high power requirement - e.g. for evacuation of air from chambers and hoses - which is undesirable in terms of energy efficiency. The fact that the pilot valve operating level is at a distance from the fitting makes it even more difficult to commission, maintain and extend the plant. This also applies to the monitoring of processes.

Intelligent valve systems make switch cabinets superfluous
A viable alternative to the use of central switch cabinets is the integration of the required automation functions in the fittings themselves. In this case, the process control system is only in charge of control and status monitoring. At field level, pneumatically operated valves are used. These can be equipped with all required automation components such as pilot valves with manual actuation, electrical feedback units and optical status indicators, field bus interfaces and even positioners and process controllers. By integrating an AS interface as a field bus interface, the entire range of advantages of this approach can be fully utilised. All that is required for power supply, feedback and communication is a two-wire line connecting the PLC with up to 62 valves. Each process valve is individually connected to the main compressed air supply line installed in the field, whereby these connections are kept as short as possible. This minimises the number and length of hose and wire connections.

For auxiliary circuits such as steam, compressed air or cleaning media, the valve specialist Bürkert offers fluid control systems with the intelligent valve systems of the ELEMENT series for creating decentralised automation solutions. The latest addition to this solution portfolio is the new control head Type 8681, which was designed especially for use with pneumatically actuated hygienic media valves. The features of a decentralised automation solution in hygienic production processes can be used to good advantage not only in the auxiliary circuits, but throughout the plant at all process levels. In the planning of new plants, the use of conventional switch cabinets can be eliminated consistently. Existing plants can be converted from central to decentralised automation step-by-step, using the existing media valves.

New universal control head for hygienic process fittings
The Type 8681 control head is universally adaptable by means of adapters and can be combined with all commercially available valve types, such as flap valves, ball valves and single and double-seat valves, regardless of the manufacturer. Within the framework of a decentralised automation concept the control head, as a central unit for the hygienic process valves, performs all pneumatic actuation, feedback and diagnostic functions, as well as bus communication. Depending on the process valve, as many as three pneumatic driver chambers can be controlled separately.

The switching positions of the hygienic process valve are measured by the control head via an inductive analogue distance sensor for monitoring strokes of up to 85 mm and then transmitted to a master controller. After installation of the control head on the valve actuator the switching positions are automatically determined by a fast and reliable teach-in function, which eliminates the need for time-consuming manual configuration. If a fourth switching position is required, it can be read in by an externally mounted inductive proximity switch.

For optimal adaptation to the respective valve and process, the switching speed of each driver chamber can be set individually for both directions of movement by means of a restrictor function integrated in the pilot valve. In addition, a non-return valve prevents faulty switching of other driver chambers of the process valves due to back pressure. Independent of the power supply, each pilot valve can additionally be switched manually by means of a mechanical control. Thanks to a patented magnetically coded manual control, it is possible to switch the main actuator for maintenance purposes from outside even in the case of a completely enclosed device - ensuring full IP protection at all times.

A highly visible three-colour optical status display with high-power LEDs, which is integrated in the control head, provides for an optimum overview at the field level. In addition to electrical feedback to the master controller, it also signals the current switching position of the process valve, facilitating diagnosis and maintenance within the system itself. Diagnostic functions such as required maintenance or errors are likewise signalled visually and can be read out in detail via a service interface. This communication can be wireless via a Bluetooth module or via the integrated USB interface.

Hygienic control valves are also suitable for decentralised automation
The use of one of the positioners or process controllers of the ELEMENT series allows the decentralised automation of control valves, in addition to the process valves. The ELEMENT process controllers are optimised for cleaning and use in the wet areas of hygienic processing plants; their outer geometry, materials, surface quality and sealing properties comply with EHEDG guidelines. The compact positioners are installed directly on the pneumatic actuator to save space and require no external hoses, thanks to the internal control air supply. Installation and commissioning are facilitated by the use of intelligent positioners with automatic adaptation and process controllers with automatic control circuit detection and parameter optimisation. Communication is achieved via Profibus DPV1, Device NET or the AS-Interface.

One decentralised system solution for all process levels
With the addition of the new Type 8681 control head to the ELEMENT series, Bürkert now offers a complete product portfolio for decentralised process automation in food and beverage production, breweries and the milk processing and pharmaceutical industries. The range of products extends from the process valve with an integrated pilot valve, as well as electrical and simple optical feedback all the way to the decentralised control of aseptic, hygienic control valves by means of a control head and process controller in complex production plants. decentralised automation can therefore be used in all processes for entire plants and installations, enabling users from these industries to combine the requirements for hygiene and safety with a high degree of automation and efficiency. Since the new control head can be used with virtually all available fittings regardless of the manufacturer, there are practically no limits to decentralised automation with uniform standards.

To download the Burkert ELEMENT Conrtrol Valves datasheet: click here
The new flow transmitters at a glance

Beautiful stainless steel housing in standardized ELEMENT design
Long durability and outstanding availability
Removable, programmable display with backlight
Programming via joystick
New processors and software
Future-proof system architecture
Protection class IP 65/67
Resistant to cleaning chemicals
Up to two 700 mA transistor outputs
Analog outputs 4-20mA
UL approved

To receive more information on Burkert Element Valves please contact Forberg Scientfic customer service:
Phone: 855-288-5330Email: mechanicalsales@forberg.com

Select a Diaphragm Seal or Chemical Seal

2011-09-26T13:33:00.000-04:00

Selection Guidelines
When selecting a diaphragm seal assembly, the following details must be taken into consideration to ensure a safeand satisfactory operation. For specific technical assistance regarding temperature effects, volumetric compatibility, etc.,contact the Forberg Scientific customer service department or send a completed diaphragm seal specification sheet to the factoryfor analysis.

Process Composition
Temperature
Pressure Range
Pressure Instrument
Process Connection
System Fill Fluid
Mounting Positions
Response Time
Seal and Gauge Matches

1. Process composition
Since the diaphragm and lower housing of the diaphragm seal will be exposed to the process medium, it is critical toselect materials for these components which will be compatible with this medium. Tables are available to assist in theselection of these materials (see Pressure Gauge Section); however, the customer is the ultimate source for specifying suitablematerials. WIKA cannot guarantee suitability. For information, see numerous reference guides such as corrosion tablereference books. If the pressure fluid is very thick, solidifies, or is full of solids, this should also be taken into consideration.

2. Temperature
Each diaphragm seal measurement system (diaphragm seal, pressure instrument, and cooling element or capillary, ifapplicable) is filled with an amount of fill fluid at an ambient temperature of about 70oF. This temperature is referred to asthe system fill temperature. The fill fluid will expand or contract according to temperature changes. This in turn causesthe pressure in the sensing element to rise or fall, thus adding zero shifting effects to the instrument output. To reducethis effect, the temperatures of the process and the environment should be specified when selecting a diaphragm sealsystem (see Diaphragm Seal Specification Sheet). Special advanced calibration techniques can be used to ensure thebest possible accuracy. At temperatures above 300 F, a cooling element or capillary is suggested to protect the pressureinstrument.

3. Pressure range
The displacement volume on the diaphragm seal required to "drive" each diaphragm seal measurement system(diaphragm seal, pressure instrument and capillary, if applicable) must be greater than the displacement volume neededto move the pressure sensing element. Normally, the lower the pressure range, the larger the diaphragm is required to"drive" the system. Conversely, for higher pressure ranges, smaller diaphragms are sufficient. Pressure transmitters alsofollow the general rule of the lower the pressure, the larger the diaphragm required.

4. Pressure instrument
As mentioned above (Item 3 - Pressure range), the diaphragm seal must supply sufficient displacement volume toenable the pressure instrument to reach full scale. As a general rule, smaller size gauges are better suited to low pressureapplications since less displacement volume is required on the part of the diaphragm seal to drive the pressure instrument.

5. Process connection
The process connection is specified by the customer. Most process connections are threaded, flanged, or clamped;however, additional connections are available. Teflon® coating and lining is only available in flanged connections, sincetapered NPT threads strip off the Teflon® during installation. However, solid Teflon® threaded connections are availablewith NPT threads.

6. System fill fluid
WIKA offers a wide range of system filling fluids allowing temperatures from -130 F to 752 F. Chemical compatibility of thesystem fill fluid with the process fluid must be carefully considered in the event of a leak. In food processing applications anontoxic fluid should be selected. Special fill fluids are also available for oxidizing media such as oxygen and chlorine.

7. Mounting position
Mounting position is important for diaphragm seal systems which include a capillary. The level difference between thediaphragm seal and the pressure instrument causes a hydrostatic pressure to act on the sensing element:a. For gauges mounted above the level of the diaphragm seal, the pointer on the dialof the gauge will be lower than the zero point.b. For gauges mounted below the level of the diaphragm seal, the pointer on the dialof the gauge will be higher than the zero point.The diaphragm seal system can be calibrated to compensate for the effect caused by the hydrostatic pressure,if the level difference is known in advance.

8. Response time
Response time, i.e., the time it takes the pressure instrument to indicate 90% of the value of a sudden pressurevariation, is especially important for instrument/diaphragm seal assemblies which include a capillary. Response timeincreases significantly in systems with long capillaries. In applications requiring long capillaries, response times can bereduced by using larger diameter capillary tubing and reducing the viscosity of the system fill fluid. Be advised thatincreasing the inner diameter of the capillary increases the temperature influence of the measuring system. Forberg Scientific can consult WIKA if detailed information is needed.

9. Seal and gauge matches
For low ranges, gauge preference is 2XX.54 or 2XX.34 for access to perform calibration adjustments. Gauges with crimprings might not be usable due to potential recalibration. The table below shows the common matches between gaugeand diaphragm seal types recommended by the WIKA.

If you would like additional information about WIKA Diaphragm Seals or other WIKA Products please contact Forberg Scientific, Inc.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

Diaphragm Seal & Chemical Seal Operating Principle

2011-09-23T11:20:00.000-04:00

The drawing below illustrates the operating principle of a diaphragm seal assembly. A pressure measurementinstrument such as a conventional pressure gauge or electronic pressure transmitter is either mounted directlyto the diaphragm seal or attached to the seal by means of a capillary or cooling element.
A diaphragm within the diaphragm seal separates the gauge / transmitter from the process medium. Any part of thediaphragm seal (i.e., diaphragm, lower housing, gaskets) which will be exposed to the process medium is selectedfrom materials resistant to pressure, temperature and possible chemical attack by the process medium.

The diaphragm seal is also filled with a transmitting fluid or system fill fluid. Any pressure applied by the processmedium to the seal diaphragm is hydraulically transmitted to the pressure element of the gauge / switch / transmitterthus generating a pressure reading.

If you would like additional information about WIKA Diaphragm Seals or other WIKA Products please contact Forberg Scientific, Inc.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

Diaphragm Seal or Chemical Seal Application

2011-09-21T14:50:00.000-04:00

Diaphragm seals, also referred to as chemical seals, are used to isolate pressure gauges, switches, and transmitters from clogging and/or corrosive media. Standard diaphragm seal bodies and diaphragms are made of stainless steel; however, a variety of materials from carbon steel to Hastelloy® C-276 are available to meet the demands of most applications. WIKA diaphragm seals can operate in pressure applications from 10" H2O to 20,000 psi and media temperature between -130°F and 752°F.

EXAMPLES OF TYPICAL DIAPHRAGM SEAL APPLICATIONS

The media is corrosive and may damage a sensitive element such as a Bourdon tube gauge, pressure switch or transmitter diaphragm.
The temperature of the media may be too high for a standard gauge, switch or transmitter to operate properly.
The media is highly viscous or tends to crystallize, or polymerize and may clog the pressure port of a gauge, switch or transmitter.
The media is non-homogenous or contains suspended matter such as wood pulp which may clog the pressure port of a gauge, switch or transmitter.
Remote reading is required. A diaphragm seal with a capillary line will allow remote installation of a pressure instrument.
The sanitary cleanliness level is critical. A flush mounted or INLINE SEAL™ sanitary type diaphragm seal avoids dead space and cavities.
The media is toxic or hazardous and may pollute the environment. A suitably designed diaphragm seal will provide additional protection.
The application requires high overpressure protection. A diaphragm seal with a contoured diaphragm bed can be configured to provide overpressure protection and protection to the instrument.

WIKA diaphragm seal systems are an excellent value and offer savings by:

Meeting fugitive emission requirements
Extending the service life of the pressure instrument
Reducing the cost of installation
Reducing or eliminating maintenance costs

If you would like additional information about WIKA Diaphragm Seals or other WIKA Products please contact Forberg Scientific, Inc.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

Commercial Roof and Gutter De-Icing Nelson Heat Trace

2011-09-16T15:41:00.000-04:00

For commercial grade protection against ice dam formation on roofs, gutters and downspouts, look to our selection of cut-to-length, and pre-terminated heating cables. Nelson Heat Trace offer a wide range of choices in terms of voltage, power and construction, including mineral insulated cables that provide exceptional protection of the heating element. Solutions are available for corrosive and hazardous locations, along with all the accessories you need for a simple installation and the controls your customers need to operate the system easily and reliably.

SMMC‐3 Control Panel. This three‐zone control panel allows each snow melting zone to be controlled independently or on a priority mode basis.

SS‐1 Automatic Snow/Ice Melting Controller. This controller senses both moisture and temperature, automatically energizing the heating cable only when snow or ice conditions exist

SLT‐D Downspout Hanger. For use with all versions of Nelson’s SLT and CLT‐JT heating cables. This kit contains material for five complete downspout hangers

SLT‐C Universal Roof Clips. Are for use with all versions of Nelson’s SLT and CLT‐JT heating cables.

SLT‐RC Roof Clips. Are designed to fasten heating cable to most types of roof and gutter materials.

AT-50 Aluminum Foil Tape- may be used to secure the heater cable to the bottom of the gutter. Each roll of tape will accommodate 46M (150’) of gutter. Gutter must be clean for foil tape to adhere properly.

Description SLT Heating Cable:
Nelson Type SLT heating cable is a parallel circuit, self-regulating electric heater. An irradiated crosslinked conductive polymer core is extruded over two multi-stranded, tin-plated, 16-gauge copper buswires. The conductive core material increases or decreases its heat output in response to temperature changes. Three jackets provide extra dielectric strength, moisture resistance, protection from impact or abrasion damage, and flame retardancy. The inner thermoplastic jacket is extruded over and bonded to the core material to prevent moisture penetration and wicking along the core. A waterproof thermoplastic elastomer outer jacket is then extruded over the inner jacket for dielectric protection and additional moisture resistance. A tinned copper braid is installed over the second jacket providing a continuous ground path. A flame retardant, UV stabilized polyolefin overjacket is then extruded over the braid.

If you would like more infomation about Nelson Heat Trace Products please contact Forberg Scientific, Inc.
Email customer service at processsales@forberg.com

A Pressure Transducer that Can Handle Just About Anything

2011-08-31T10:35:00.000-04:00

Author: Wika

Have you ever had a pressure transducer succumb to high pressure, extreme heat, or cold? Have you had an application fail because a pressure transducer did not live up to its expectation? WIKA offers the R-1 as the latest generation of pressure transducers using thin-film and thick-film ceramic technologies for refrigeration and air conditioning systems.

The R-1 pressure transducer is tested using strict protocols designed specifically for the refrigeration and HVAC industry. It meets or exceeds all test requirements including resistance to icing, heating, high pressure steam jets, internal condensation, submersion, and dust tightness.

Image Captions (Left to Right)

Heat cycling: -15°F to +140°F to EN 60068-2-38

Dust resistance: Ingress Protection IP6X according to EN 60529

Submersion: 15PSI at 75°F for 30 minutes

Freeze / thaw cycling: 40°F to 23°F for 240 hours

Image Captions (Left to Right)

High pressure steam washdown: Ingress Protection IPX9K to DIN 40050-9
Condensation: +115°F ambient at 85% RH, media temp 15°F for 500 hours

Long-Term Integrity
Long-term leak resistance of the R-1 pressure transducer is achieved through the hermetically sealed, welded thin-film sensor and process connection. Elimination of soft sealing materials removes the need for additional material compatibility testing and eliminates the chance of long term leaks developing due to seal deterioration.

Refrigeration & AC System Overview
With the rapid increase in energy costs, energy efficient refrigeration and HVAC systems are essential. If operating your plant’s refrigeration systems involves a significant electricity expense, WIKA presure transducers for refrigeration and air conditioning can significantly reduce energy consumption when used in conjunction with a PLC based control system. Permanently installed pressure transducers make it simple to monitor the performance of your system and identify any problems that may occur.

The photograph at right is an example of a refrigeration application for which the WIKA R-1 pressure transducer would be used.

Description of a typical refrigeration cycle

Step 1: Beginning at the compressor, the refrigerant is compressed and leaves the compressor as a high temperature, high pressure gas.

Step 2: The hot refrigerant enters the condenser, which is usually fan forced air cooled; then the refrigerant leaves the condenser as a warm liquid and continues on to the thermal expansion valve.

Step 3: The expansion valve meters the proper amount of refrigerant into the evaporator.

Step 4: The sudden pressure drop after the expansion valve converts the high pressure warm liquid refrigerant into a low pressure, cold gas. The cold gas absorbs ambient heat from fan forced air passing through the evaporator. This ambient heat converts the refrigerant into a cool dry gas. From here the refrigerant reenters the compressor to be pressurized again and the cycle repeats.

The diagram below shows a typical refrigeration cycle. Image modified from Natural Resources Canada

Pressure transducers are used on both the high pressure side and low pressure side of the compressor to control and optimize the cycle.

Low refrigerant charge in a refrigeration system is detected by monitoring the compressor’s discharge of pressure and temperature. This monitoring is accomplished with a WIKA pressure transducer located at or near the compressor outlet. Output signals from the pressure transducer are sent to a PLC. When a high discharge temperature with a low discharge pressure is detected, the PLC provides a low charge signal. The PLC can also receive input about additional operating characteristics of the refrigeration system to provide a more accurate low charge signal. The PLC is connected to a warning indicator and compressor so that the low charge signal activates the indicator and deactivates the compressor.

Refrigeration systems often suffer from hidden equipment faults and inefficient controls. Undetected problems in a refrigeration system can result in high energy costs and shorten the life of the equipment. By installing the proper monitoring equipment and adopting an efficient control strategy, costly problems can be prevented.

Potential problems

Suction line filters keep the refrigerant clean and protect the compressor from taking in debris. If one of the filters becomes clogged, the restricted flow will create a pressure drop in the system. This drop will reduce efficiency and lead to unnecessary costs.
Hidden refrigerant leaks can eventually lead to a low refrigerant charge. Repairing leaks can bring about a remarkable performance boost. A low charge can cause efficiency losses and add to annual operating costs.
In many refrigeration systems, head pressure stays at a fixed level to assure reliability over numerous temperature ranges. This also assists in maintaining sufficient refrigerant flow, freeze protection for the condenser and an adequate pressure difference across expansion valves.

The WIKA R-1 pressure transducer is produced on a modern, highly flexible production line which meets the highest quality standards. With the R-1 pressure transducer, WIKA offers absolute reliability at a low cost, without compromising quality, safety or affordability.

If you would like more information about the Wika R-1 Pressure Transducer or any other Wika Products please contact Forberg Scientific, Inc. Customer Service.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

GPI Stainless Steel Turbine Liquid Flowmeter: What is it Good For?

2011-08-29T15:04:00.001-04:00

Posted in Industrial Flow Meter Articles: Liquid Flow Meters by GPI on October 14, 2009

Edwin Starr’s lyrics in the classic, “War” tell the listener that war is good for “absolutely nothing!” When you talk about flowmeters with your friends, which I am sure all of us do, they probably think the same thing about the topic. Your friends think that flowmeters do absolutely nothing and they often wonder why someone would buy one of these objects.

If you are not in our industry, it is hard to explain why flowmeters make our universe whole or give us peace of mind. As we all know, flowmeters come in different shapes, sizes, materials, and flow ranges. Books could be written on each topic alone.

In this GPI informational article we will focus on how to use a stainless steel turbine flowmeter, how it is being used in various industries and other features of this popular meter. Plus, we will have an in-depth look at the GPI G2 Stainless Steel flowmeter.

AS GOOD AS IT GETS
A flowmeter that is made of stainless steel is one that does not rust, stain, or corrode easily when compared to other types of flowmeters that are made of different metals such as brass, aluminum etc. This is one of the main reasons why stainless steel turbine flowmeters are so popular. They are rugged meters that can take on some of the harshest chemicals without damage.

If you are looking for a meter that can sustain high pressure and harsh liquids you need to check out one of these stainless steel meters. The versatility of these meters can be seen in the ways it is used throughout different industries. There are some original equipment manufacturers (OEM) that use the meter for process control of chemicals in some of their applications. These manufacturers enjoy peace of mind by knowing that the chemicals being monitored have a good accuracy reading.

Manufacturers build these stainless steel turbine flowmeters differently. Some of these flowmeters are bigger, bulkier and the end user has to accommodate for space restrictions to make sure the application has ample room for the height and width of the meter. Other flowmeters are smaller and rugged in design so end users have flexibility when installing them in their applications.

If you are looking for a flowmeter that can handle some of the harshest conditions stainless steel is the way to go.

INDUSTRY USE
One of the popular uses of a stainless steel turbine flowmeter is to measure chemicals. These meters have excellent chemical compatibility allowing them to measure ammonia and boric acid. Stainless steel turbine flowmeters can take on some very obnoxious chemicals.

Bruce Patterson, Executive Products Manager at GPI, has over 20 years experience in the field of flowmeters. Patterson says,“ The versatile, stainless steel flowmeter performs great in most applications. These meters are currently used in environmental control, batching and blending of chemicals, temperature regulation, chillers and heaters, and in process control through out different markets.”

Cutting costs is always a great thing for business because it helps the bottom line. A flowmeter is a tool that can help companies save cash by cutting waste.

When asked about the potential impact these meters have on the bottom line, Patterson replied,
“It is a simple equation, the higher the accuracy you have when measuring fluids for your particular application the lower your risk of waste in measurement. Companies that are using this meter along with a batch controller are also in better shape when it comes to potential equipment break downs.”

FEATURES OF A STAINLESS STEEL FLOWMETER
Although there are many types of stainless steel turbine flowmeters in the industry let’s concentrate on the features of the GPI G2 Stainless Steel turbine flowmeter. The GPI G2 Stainless Steel turbine flowmeter has a local display with two totals, one is re-settable and one is cumulative. The meter is factory calibrated in gallons and litres.

The customer wants to calibrate it to their specific fluid the G2 Stainless Steel turbine flowmeter includes two field calibrations and flow rate. The accuracy rate depends on the meter size (see spec sheet here). The ease of repairing the internal parts is very popular with people using this meter. The G2 Stainless Steel flowmeters are plug-and-play ready. If the internals of the stainless steel flowmeters are damaged in use, they are easy to replace. All the user needs to do is take a retaining ring off and remove the damaged internals. Then replace the internals with a new kit. Many users really like this feature because it takes literally minutes to do. This means less down time to their operation.

This stainless steel turbine flowmeter has about 9,000 hours of battery life. Think about that for a second, which is the equivalent of about 9,000 NFL football games (minus the rest room breaks, beer & chip commercials, and time-outs called). The electronics in the display use Lithium batteries to provide it with the power necessary to run the display.

One of the best things about GPI G2 Stainless Steel turbine flowmeters is the class one division one rating. In simple English, this classification means that the flowmeter is explosion proof, intrinsically safe, and of the purged/pressurized type. Fancy lingo that lets users know there is no chance the flowmeter will cause a spark if it is used in a hazardous area. This is a great feature for someone wanting to use this meter but has to prove to management that the meter is safe to use in their hazardous application. In some industries they are required to prove that the piece of equipment that is going to be used has been approved by a number of regulatory organizations such as Factory Mutual (FM). Think of this as peace of mind approved.

CONCLUSIONAs you can see from all this fancy data and the examples, stainless steel turbine flowmeters are good for users who want an accurate, rugged and dependable flowmeter. The only thing that these meters can’t do is start a war like the one on Edward’s song. However, the stainless steel turbine flowmeters can start a price war which wouldn’t be bad for the consumer.

Hopefully reading this gave you more insight on stainless steel turbine flowmeters in general along with useful information on the GPI G2 stainless steel turbine flowmeter. In the words of John Lennon, “Let us now give stainless steel flowmeters a chance”, okay he didn’t really say that but you get my drift or should I say flow?

If you would like more information about the GPI G2 Series Flowmeters or other GPI Flowmeters please contact Forberg Scientific, Inc Customer Service Representative.
Phone: 248-288-5990
Email: processsales@forberg.com

Instrumentation for Hazardous Environments - Wika Pressure Transmitters

2011-08-26T11:38:00.001-04:00

Wika pressure gauges, especially bourdon tube gauges, can be found worldwide in the field of oil and gas production and regeneration offshore as well as onshore.

These Wika measuring instruments are manufactured in close co-operation with members of ISO 15156 and NACE committee in accordance with respective latest revision. The bourdon tube and diaphragm pressure gauges have been put to the test in different independent institutions where they were subjected to laboratory tests at different acid gas concentrations related to temperature and time.

Wika’s IS-2X intrinsically safe pressure transmitters have ATEX/FM/CSA approvals in one device. They are available in a high temperature version as well as a field case version and are SIL 2 rated.

Pressure switches with bourdon tube measuring systems have a long service life. They are cheap and robust at the same time due to the prevalence of bourdon tubes. The BAX bourdon tube pressure switch has Ex-class protection EEx-d. The housing is IP65 epoxy coated die-cast aluminium and the instrument is available in ranges from 0-40 and 0-600 bar.

The IS-21-S and IS-21-F transmitters feature a flush diaphragm process connection. They are specifically designed for the measurement of viscous fluids or media containing solids that may clog a NPT process connection.

Wika's Model IS-20-F and IS-21-F feature an integral stainless steel junction box with internal terminal block for use in extremely harsh environments. A 1/2" NPT female conduit connection is standard on all models and a cable compression electrical con-nection is available as an option.

All types require a 10 to 30 volt supply provided by an intrinsically safe power supply or through an approved intrinsically safe zener diode barrier.

If you would like more information about the Wika's Intrinsically Safe Hazardous Area Pressure Transmitters or other Wika items please contact Forberg Scientific, Inc Customer Service Representative.
Toll Free: 855-288-5330Email: mechanicalsales@forberg.com

UE ONE SERIES low cost mechanical switch

2011-08-24T11:16:00.001-04:00

Forberg Scientific Offers the United Electric ONE SERIES, which has all the reliability of an electronic transmitter, with the ease of use and low cost of a mechanical switch!

MAKE THE SMART CHOICE. THE ONE SERIES FROM UE IS:

• A reliable, cost-effective solution for upgrading plant instrumentation.
• Ideal for applications that demand a switch that never needs calibration, has programmable adjustability and 0.1% repeatability.
• Easily integrated into a safety instrumented system (SIS) that requires a smart-diagnostic switch (FMEDA and SIL verification reports available upon request).

KEY FEATURES THAT SET UE’s ONE SERIES APART:
• Digital process display
• Programmable set point and deadband
• Self-diagnostic solid-state digital electronics
• Plug port detection
• Nuisance trip filtering
• Patented electronic IAW self-diagnostics
• Min/Max process values memory
• 3-year warranty

APPLICATION VERSATILITY:
For alarm and shutdown switching applications, there is no better choice than the One Series family of electronic switches from United Electric Controls. Measuring gauge pressure, differential pressure or temperature, the extremely rugged and reliable One Series takes all of the guess-work out of monitoring process variables to prevent injury, loss and downtime. With its large digital display, fully-adjustable deadband, and 100% solid-state design, the One Series is the obvious choice for plant upgrades and new construction projects. A built-in microprocessor includes digital repeatability and intelligent self-diagnostics, offering plant operators an extremely reliable and smart protection device.

Proven in use in literally thousands of diverse applications, UE has recently developed explosion-proof One Series models, extending this revolutionary switching technology to Zone 1 (Division 1) areas.

PROVEN IN LITERALLY THOUSANDS OF DIVERSE APPLICATIONS! HERE ARE JUST A FEW
• Pumps and compressors- start/stop, optimizing, shutdown, staging
• Lubricating oil monitoring- sump temperature, bearing pressure, predictive maintenance
• Hydraulic oil pressure- high pressure monitoring, emergency shutdown, ram cycling
• Filter monitoring- automatic backwash, clog and change indication, proving flow
• Safety systems- safety integrity levels 1 & 2, alarm and shutdown, local switching, fast response time
• Plant upgrades- power and wastewater plant upgrades, drop-in replacement for mechanical switches

More information about the UE One Series click UE One Series Catalog

If you would like more information about the UE One Series or other United Electric Controls items please contact Forberg Scientific, Inc Customer Service Representative.
Phone: 248-288-5330
Email: mechanicalsales@forberg.com

Dräger X-zone 5000 Confined Space Monitoring Without Limits

2011-08-09T16:03:00.001-04:00

Area monitoring without limits – the Dräger X-zone 5000. In combination with the Dräger X-am 5000, the X-zone 5000 reliably monitors for up to six hazardous gases and warns at preset levels.This easily transportable, robust and water-proof unit extends mobile gas detection technology to a unique system with many applications.
INNOVATIVE AREA MONITORING
The Dräger X-zone 5000 transforms the Dräger X-am 5000 personal gas detection instrument into an innovative area monitoring device for a wide range of applications. A patented combination for increased safety – used with personal gas air monitoring carried on the body or positioned where gas hazards are expected, the X-zone 5000 area monitor knows no limits!

CLEAR ALARM - 360°
Even from a distance, the illuminated green LED ring indicates that the air is free of toxic and combustible gases. When gas hazards are detected, the LED changes colors from green to red, providing a clear visual warning that hazardous gas is present. In addition, it emits a loud and audible evacuation alarm. With a patented 360° alarm amplifier, the acoustic warning is heard easily over a wide area, independent of wind direction. The Dräger X-zone 5000 gas entry is arranged so that gas can diffuse into the Dräger X-am 5000 from all sides.

WIRELESS FENCELINE
Up to 25 Dräger X-zones can be automatically interconnected to form a wireless fenceline. This interconnection of the monitoring devices allow for rapid securing of larger area, e.g. leaking pipelines or industrial tanks - or the monitoring required during industrial shutdowns.

In the event of a gas alarm, the Dräger X-zone 5000 transmits alarm signals to all units that are part of the fenceline which then display a daughter alarm. The original alarming unit shows a red LED along with its audible alarm, while the daughter alarm displays green/red with its illuminated LED ring. This provides fast, easy recognition of the general alarm, while identifying the unit which alarmed originally. This assures a positive alert and a clear and clean evacuation. Alternatively, the fenceline can be wired.

AREA MONITORING – USING A SAMPLING PUMP
An optional integrated pump allows monitoring of remote areas by pulling a sample to the device. This provides continuous monitoring of confined spaces and locations which are difficult to access – from a distance of up to 45 m (150 ft).

ALARM CONTACT FOR CONNECTION TO EXTERNAL EQUIPMENT
Via the potential-free alarm contact, the Dräger X-zone 5000 device can be connected to and operate external equipment such as alarm horns, lamps or traffic lights. In addition, the fenceline signal, along with the alarm contact, can be forwarded to a control room – overseeing a wide range of applications.

AVAILABLE FOR USE IN CLASS I, DIV 1 OR ZONE 0 AREAS
Unlike personal gas detectors, area monitoring devices often stay located within a potentially hazardous area, even during a gas alarm. It is therefore important that the devices are approved for use in explosive hazard areas. The approvals for X-zone 5000 enable the continuous operation of the device in an explosive atmosphere and environment.

CONTINUOUS OPERATION FOR UP TO 120 HOURS
Two different types of rechargeable batteries enable the Dräger X-zone 5000 to be adapted to a variety of applications: the 12 Ah battery unit weighs about 7kg (15 lbs) and offers continuous operation for up to 60 hours. The alternative 24 Ah battery provides up to 120 hours of continuous operation – a complete working week.

INDUCTIVE CHARGING TECHNOLOGY
The Dräger X-zone 5000 can be charged in two ways: in the conventional wired manner or via a modern wireless induction charger. With the inductive charge cradle, the device is simply placed into the charger – alleviating the problems encountered with dirty charging contacts, etc. Additionally this non-contact charging possibility also allows maintenance and service to be carried out simultaneously.

CONFIGURABLE TO MEET INDIVIDUAL REQUIREMENTS
With the Dräger CC-Vision® PC software, the Dräger X-zone 5000 can be configured to meet individual needs and requirements. Alarm volume, visual cadences and frequency can all be adjusted. In addition, X-zones can be grouped to work as teams, so several groups of units can be set up to monitor different areas in close proximity without interfering with each other.

If you would like more information about the Dräger X-zone 5000 or other Dräger items please contact Forberg Scientific, Inc Process Sales Representative.
Phone: 248-288-5990
Email: processsales@forberg.com

Turck New Rugged, Compact Non-Contact Inductive Sensors Designed for Harsh Environments

2011-08-04T11:46:00.002-04:00

Turck Press Release

Minneapolis— TURCK announces their Q-track™ family of linear position sensors has been expanded to includet he newest QR14 and the Q17 models. Measuring just 14 mm and 17 mm in height, the compact, non-contact inductive sensors deliver dependable, repeatable measurements in applications with spacing limitations and harsh environments.

TURCK’s linear inductive sensor operation is based on the RLC resistance inductance capacitance principle.Unlike potentiometric or magnetostrictive technologies, the sensors incorporate precisely manufactured printed emitter and receiver coil systems. The emitter coils are activated with a high frequency AC field and produce an inductive RLC circuit with the positioning element. The element is inductively coupled with the receiver coils,
which are arranged so different voltages are induced in the coils, depending on the position of the actuator. The voltages serve as a measure for the sensor signal. Q-track sensors deliver maximum measuring spans, with minimal blind zone and high resistance to EMI/RFI noise interference.

“The low-profile design and rugged housing make the Q-track sensors the preferred choice for versatile linear positioning applications,” said Marty Cwach, Product Manager, TURCK. “Our ability to repackage technology into new housing designs enables us to deliver smaller sensors that suit the widest variety of application and spacing requirements.”

Superior to alternative technologies, Q-track sensors’ innovative design, linearity and repeatability eliminate common performance failures experienced with other technology options. The RLC principle of operation used in the Q-track linear position sensor is highly immune to noise interference and is inherently weld field immune. Since the position element does not contain a magnet, it can be used in metal working applications because it will not attract ferrous debris, which would affect the operation of a magnetostrictive sensor. Additionally, the inductively coupled position element provides non-contact position feedback ideal for use in applications with constant motion, such as pinch rollers, cylinder position, web tension control, pitch control, resisting damage and costly downtime.

Along with their advanced design features, the sensors’ compact, durable construction increases functional flexibility. The QR14 and Q17 include both current and voltage outputs, eliminating the need for two separate sensors and offering greater convenience and cost efficiency. The fully potted and sealed IP67-rated housing protects against moisture and dust in demanding environments.To receive more information on Turck please contact Forberg Scientfic customer service:
Phone: 855-288-5990
Email: processsales@forberg.com

Calibration and Measurement Uncertainty

2011-08-03T13:42:00.002-04:00

From: Endress+Hauser

Reading values from dials and taking measurement with devices is fairly standard procedure in any process. What we frequently neglect to consider is the fact that what we read does not necessarily match reality

For various reasons, any measure is affected by errors. An experimental measurement can only be correctly interpreted if it is associated with an estimate of the probable error called 'measurement uncertainty'.

Metrology, the science that pertains to the theoretical and practical aspects of measurement tasks, is what we use to master the consequences of this uncertainty. In terms of quality management, industrial metrology involves managing the preparation and execution of measurement tasks in order to guarantee the measurement results, their traceability and their uncertainty.

Metrology is underutilized in industry because it is generally approached from the perspective of statistics or from the perspective of quality, but rarely from the perspective of its usefulness for the process.

But the real question concerning measurement uncertainty should be:

What impact does it have?
And how can the measurement be improved overall?

Take the case of a technician who, when performing an annual calibration, regularly finds values that are 'borderline' or even out of tolerance. Quite logically, he will make the decision to calibrate the device every six months instead.

While this decision is sure to cost the company more, its efficacy will in no way be certain. This is because the device must always be considered within the context of the measurement or calibration procedure.

For calibration services, many manufacturers must rely on a trusted outside specialist. Continuously developing standards in compliance with international norms such as ISO 17025, best practices in statistics and metrology, the service teams at Endress+Hauser are able to provide not just calibration, but also all of the materials and methods necessary to ensure the quality of the calibration service. On site or at one of the Group's many laboratories.

The extended article on industrial metrology and calibration can be read in our latest Maintenance Today #6 "Minimizing maintenance effort with maintenance, calibration and lifecycle solutions"

Forberg Scientific, Inc is now Endress+Hauser Authorized Service Provider (ASP) for Michigan and Northern Ohio.

Service can be scheduled by calling Forberg at 248-288-5990 Email: processsales@forberg.com or Endress+Hauser at 800-642-8737. With offices in Troy, Michigan, Cleveland, Ohio, and Grand Rapids, Michigan, Forberg Scientific has the resources and experience to meet your every need.

BURKERT EXPANDS AESTHETIC CLEAN LINE ELEMENT RANGE WITH NEW ‘FUTURE-PROOFED’ STAINLESS STEEL DIGITAL FLOW TRANSMITTERS

2011-07-29T12:57:00.001-04:00

News Release from: Burkert Fluid control Systems

Bürkert Fluid Control Systems has expanded its ELEMENT modular stainless steel range of products for total solutions in process measurement and control, with new Type 8026, 8036 and 8076 digital flow transmitters.

The new transmitters are robust (IP65/67 wash down resistant), aesthetic clean line products offering enhanced technical features such as future- proofed system architecture and software, removable programmable backlit displays, and simplified programming via joystick.

The ELEMENT flow transmitters are available in three configurations, Basic to Advanced, to meet all OEM and user budgetary requirements. The Basic unit has one 4-20mA and one NPN transistor output, while the most advanced unit has two NPN/PNP transistor outputs and two 4-20mA outputs. Importantly, both units comply with the stringent UL safety standards, and provide long-lasting and reliable ingress protection rated IP 65/67. In addition, the stainless steel housings of the flow transmitters are durable and resistant to cleaning chemicals, as well as enhancing the look of any system with their high-quality appearance. These features make the flow transmitters ideal not only for use in water treatment and process automation, but also in food and beverage, dairy, brewing, cosmetics and pharmaceuticals.

The Innovative operating concept of the ELEMENT series of flow transmitters includes removable displays that are programmable and equipped with backlighting for easier operation. All customer-specific settings, such as the measuring range, units of measurement, pulse output and filters are configured directly at the device. The programming itself is achieved via a joystick. By moving this unit horizontally and vertically, lines and rows are selected and activated; pressing the joystick to set the parameters, define and save configurations and to start the unit.

The clean line stainless steel housings of the ELEMENT series integrate a future-proof system and system architecture, with a new processor and new software to optimise the performance of the transmitter sensors. To guarantee maximum reliability and quality, the same circuits are used for conductivity and pH/ORP measurement as those used in Bürkert’s well proven ELEMENT transmitter models, Type 8222 and 8202.

Burkerts ELEMENT System:
Burkert’s new ELEMENT system sets a higher benchmark in process measurement and control. It provides a complete systems approach, linking clean line valves, sensors, positioners and valve actuators in a simple architecture to solve total control loop processes. With unlimited modularity, ELEMENT saves processing time by offering total control solutions for media from slurries to steam, and from de-ionized water to hydrochloric acid.

To download the Burkert ELEMENT Conrtrol Valves datasheet: click here
The new flow transmitters at a glance

Beautiful stainless steel housing in standardized ELEMENT design

Long durability and outstanding availability

Removable, programmable display with backlight

Programming via joystick

New processors and software

Future-proof system architecture

Protection class IP 65/67

Resistant to cleaning chemicals

Up to two 700 mA transistor outputs

Analog outputs 4-20mA

UL approved

To receive more information on Burkert Element Valves please contact Forberg Scientfic customer service:
Phone: 855-288-5330
Email: mechanicalsales@forberg.com

Forberg Scientific, Inc. named Endress+Hauser Authorized Service provider for Michigan & Northern Ohio

2011-07-28T15:49:00.003-04:00

Forberg Scientific, as the ASP, has been factory-trained and certified to provide key support for all your instrumentation service needs including:
• Field Service
• Instrument Start-Up and Commissioning
• On-site Calibration (ISO 17025 Accredited)
• Training

Service offerings cover instruments including:
• Flowmeters
• Temperature
• Pressure
• Level
• Analytical

Since 1971, Forberg Scientific has built a reputation for dependable quality, experience and rapid delivery. Today, the firm is recognized as the largest and most reliable source for instrumentation products. Forberg Scientific’s professional sales force can assist in specifying and maintaining state-of-the-art process control systems. Our service group is the unique difference that separates us from other suppliers. We pride ourselves on this rapidly growing part of our business. On-site training, engineering and design services, panel enclosures, cabinet assemblies, start-up assistance and support, in-plant air quality audits, steam trap surveys, rebuilding services for valves, regulators and filters, diaphragm and capillary filling, instrument and gauge calibration and assembly work are all part of what we do.

Service can be scheduled by calling Forberg at 248-288-5990 Email: processsales@forberg.com or Endress+Hauser at 800-642-8737. With offices in Troy, Michigan, Cleveland, Ohio, and Grand Rapids, Michigan, Forberg Scientific has the resources and experience to meet your every need.

Why a compressor room needs to stay cool!

2011-07-27T16:35:00.001-04:00

Author: David J. Connaughton
Blog: Compressed Air the Fourth Utility

Compressors are often put into small rooms to reduce noise. Unfortunately, putting a compressor inside a small room creates problems. One of these problems is heat. Compressors create a lot of heat from the compression of the air. This heat is usually expelled into the room via a fan cooled aftercooler. It’s not unusual to find temperatures well above 100F (38C) regardless of the temperature outside.

About 20 years ago I was using a computer to collect data on an experiment that I was conducting inside a compressor room. I was having trouble with my computer. It seemed to freeze in the middle of my experiment and not collect the data through the full experimental run. I took it out of the compressor room, back up to my lab to trouble shoot. No matter what I did, I could not duplicate the error in my lab. I even brought the computer to the local repair shop and they could not duplicate the error either. So I brought the computer back to the compressor room and started collecting data again. But again, the computer froze up. What was going on? It turned out that the temperature inside the compressor room was so hot that the electronics inside the computer we affected. My solution was to place the computer outside the room and run lines through the wall to the experiment. Problem solved.

Heat in the compressor room has a direct effect on the quality of the compressed air in your air system. The hot room attracts moisture from the surrounding environment since hot air holds more moisture than cold air. The room acts like a sponge soaking up all the moisture surrounding the room. This moisture finds its way into the compressed air lines creating condensation and contamination. High temperatures also create finer mists of any oil carryover. Finer mists and aerosols are stable at high temperatures and have the ability therefore to bypass filtration in the compressor room and contaminate the piping system downstream.

To minimize the effects of heat inside a compressor room, you’ve got to cool it down. Fresh air circulation is key. In the summer time, air should be expelled from the room and draw in air from outside. In the winter-time, the hot air created by the compressor can be blown into the workplace for supplemental heating. Don’t just put your compressor in a room and forget about it. If you keep it maintained and keep it ventilated your whole system will perform better.

Parker Balston Filters and dryers do a great job of cleaning up the compressed air at the point of use.
If you are need more information you can contact Forberg Scientific Inc. Customer Service.
Phone: 248-288-5330
Email: mechanicalsales@forberg.com

Eliminate Frustrations When Selecting Process Gauges

2011-07-26T22:43:00.003-04:00

From: Wika Application Notes

Pressure gauges often leave maintenance professionals asking a number of questions:

Will the pressure gauge be durable enough to withstand my extreme operating environments?

Do I liquid fill the pressure gauge or should I leave it dry?

How long will the pressure gauge last?

Can I be assured that the pressure gauge will give me accurate readings over its lifetime?

What happens when I accidentally misapply the pressure gauge?

Do I have the correct pressure gauge for my application?

The XSEL™ process gauge from WIKA Instrument Corporation is designed as the answer to all these types of questions and more.

Maintenance professionals, responsible for keeping their plants running in good order, face these questions on a regular basis. Answering these questions can be challenging, especially when they do not have the extra time and resources needed to research the right solution for every application. However, making the wrong decision about a pressure gauge can cause unnecessary additional downtime.

Choosing the right pressure gauge doesn’t have to be a difficult choice, though. The XSEL™ process gauge from WIKA helps take the guess work out of the decision-making process and is the most versatile pressure gauge in the industry today. The XSEL™ state-of-the-art pressure system design is designed to provide maximum performance and longevity in situations when no liquid-filled case fill is used. The XSEL™ gauge was designed specifically to bring the performance of a dry pressure gauge to as close as possible to that of a liquid-filled gauge for the most severe and demanding applications. For ease of installation, all XSEL™ process gauges feature:

Four sided wrench flats on the stem

A case design that allows for the dial to be rotated every 90 degrees for four different mounting positions

Easy access to the movement for field calibration

A standard field-fillable case

All XSEL™ process gauges provide a long service life that helps reduce maintenance downtime. Studies have shown that the WIKA XSEL™ process gauge is capable of producing 10 million or more pressure cycles with no negative effects on the accuracy. In addition, WIKA is offering an industry's best warranty on all XSEL™ process gauges with a standard 5/10 year warranty. (See Terms & Conditions)

With manufacturing and customer service in the United States, XSEL™ process gauges are readily available in standard ranges and can also be customized to meet your specific requirements.

Whether it is reducing maintenance downtime, ease of installation or outstanding service performance, the XSEL™ process gauge series from WIKA helps eliminate the frustration and worry that most maintenance professionals experience in selecting the right pressure gauge. Simply ask for the XSEL™ process gauge from WIKA for peace of mind and to know that you have made the right choice for your processing needs.

XSEL series™ includes models 21X.34, 22X.34, 23X.34 and 26X.34

For additional information please visit our website www.forberg.com or contact Forberg Scientific customer service.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

GPI Flow Meter LCD Display Explained

2011-07-22T11:06:00.001-04:00

Posted in: Industrial Flow Meter Articles: Liquid Flow Meters by GPI on 7/8/2010

If you are familiar with our GPI flow meter brand you probably know or have experience with our electronic digital flow meter display. We believe that our flow meter display is one of the better ones out on the market today. In this post we will explore what we call the “new” GPI 9 LCD electronic display that is being shipped with our TM Series Water Meters, G2 Series Industrial Grade Flow Meters and our A1 Series Flow Meters. We hope that by the end of this post you will be familiar with some of the basics of this flow meter display and have a better understanding on how it works with our flow meters.

What does the “new” GPI 9 flowmeter display do?
Allows you to measure batch & cumulative flow totals
The GPI 9 flowmeter electronic display gives you two totals, one for batching a set amount of liquid that you can reset and the other is a cumulative total that can’t be reset. An easy way to understand these two totals is if you think of the batch total as your trip meter in your car. The trip meter allows you to see how many miles you have traveled with the ability to reset it whenever you see fit. That is the same thing the batch total option on this flowmeter display does, it allows you to measure an amount of liquid with the ability to reset it at anytime. The way to remember how the cumulative total works is if you think of your car’s odometer. The odometer measures how many miles the car has traveled but you can’t reset it. The cumulative total option on this display measures the same way as the odometer, total gallons or litres that the meter has measured in its lifetime use.

Measures Flow Rate
The GPI 9 flow meter display allows you to measure the flow rate of liquid being measured. The flow rate is typically measured in gallons or litres per minute (GPM or LPM). This new display allows you to measure in units per minute, units per hour and units per day. If you need to measure how much water your applications has running through it per hour all you have to do is hit a couple of buttons and the display will change from measuring gallons per minute to gallons per hour. The flow rate is like your speedometer in your car, it tells you the speed that your liquid is traveling through your line or application. This feature is good if you are monitoring how fast or slow your liquid passes through your pipes.

Non-Volatile Totals = No Data Loss
If you have ever used one of these displays in the past you would have noticed that when you replaced your batteries the totals zeroed out. In this new configuration of the GPI 9 display, when you change your batteries your totals will still be available once the meter is powered back on. This is also a great feature if you install your flow meter in a remote area that you only check on every now and then. If the meter display happens to lose battery power by the time you get a chance to check it, you can rest assured that once you put new batteries on the display your totals will still be available for you to see.

5 Year Battery Life = Display Doesn’t Turn Off
If you have purchased one of these new displays you might have noticed that the display never shuts off. The main reason that this happens is because of the Lithium battery life of five-years. We used to send flow meters that had this display with a battery tab installed that needed to be pulled in order for the display to turn on. This display has a five year battery life regardless of whether it is on or off. The power that this display draws is very small therefore it affords for a long lasting battery life.

Easy-To-Use Correction Factor Method
The new display allows you to calibrate your meter by inputting the plus/minus correction factor. You may want to custom calibrate the meter after testing using your actual fluid conditions. You can field calibrate the meter by using the buttons to enter the percent of change you want the display to correct. Values from -99.99% to +99.99% can be entered.

Various Factory Calibration Units Available
This flow meter display’s standard factory calibration is in gallons and litres. However, the display can be configured to read in imperial gallons, quarts, ounces, cubic feet, cubic centimeters, cubic meters or barrels.

Ability to Count Past 999,999
In past versions of this display you were only able to read flow rates up to 999,999 because of the six-digit allowance on the display. This new flow meter display will illuminate a X10 on the top right once you have gone past 999,999. This gives you the ability to know that you are at 1,000,000 and above. If you go past 999,999 X10 then the meter will go back to 100,000 and a X100 will be illuminated on the top right corner instead of X10.

What are the differences between this flow meter display and the previous version?

Gallons read GL instead of GAL.
Litres read LT instead of LTR.
Flow Rate displays as FLOWRATE/M instead of FLOWRATE. The M at the end of FLOWRATE means gallons or litres per minute depending on how you have the display set to reading. This can also be switched to read FLOWRATE/H to measure per hour or FLOWRATE/D to measure per day, with the exception of the TM series meters.
Top right side of the meter reads FAC instead of PRESET. If these three letters are showing it means that the display is being used under the factory calibration. If you custom calibrate it for your specific liquid the FAC will not show. This will help you know in what calibration mode you are under.
TOTAL 1 doesn’t say locked but know that this is the cumulative total and you can’t zero it out.
TOTAL 2 says BATCH next to it indicating that this is the total you should be on if you want to run batches at a time.
The numbers are wider therefore making it easier to read.
The display will not shut-off

Have more questions ?

If you have more questions or would like to get pricing or avaibility please visit our website www.forberg.com or contact Forberg Scientific Process Customer service at the following

Phone: 248-288-5990

Email: processsales@forberg.com

Why Specify Snap Track Cable Tray

2011-07-20T14:18:00.001-04:00

Snap Track has been designed to provide the ease of installation and the economy of wire basket tray while retaining the stability and inherently superior cable protection of traditional raceway. Our philosophy is simple – the purpose of a cable tray system is to support and “Protect the Cable”.

Snap Track was developed in response to repeated requests for a complete industrial cable tray system designed for the limited width requirements of instrumentation data cable.

During the design process we consulted with numerous leading instrument manufacturers, engineers, integrators, contractors, and network cable providers to bring you a complete UL Classified system for use as an Equipment Ground Conductor (EGC). Techline – Snap Track now addresses all your installation requirements from ladder tray transition to the elimination of pig tails at the instrument connection, all from a single source, and in accordance with current NEMA, NEC, andUL standards.

If you are looking to purchase a purchase or find out more information about Snap Track please contact Forberg Scientific customer service.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

Differential Pressure: A Difference You Can See

2011-07-18T19:44:00.003-04:00

From:WIKA
Differential pressure gauges are often found in industrial process systems and yet, they are easily overlooked or misunderstood. In fact, a differential pressure gauge can often times provide multiple solutions to everyday problems.

Differential pressure (DP or ∆p) is the difference between two applied pressures. For example, the pressure at point “A” equals 100psi and the pressure at point “B” equals 60psi. The differential pressure is 40psi (100psi – 60psi).

A differential pressure gauge is a visual indicator, designed to measure and display the difference in pressure between two pressure points in a process system. They typically have two inlet ports, each connected to the pressure points that are being monitored. In effect, the differential pressure gauge performs the mathematical operation of subtraction through mechanical means. This eliminates the need for an operator or control system to watch two separate gauges and determine the difference in readings.

Typical applications for differential pressure gauges in refineries, petrochemical or chemical plants include filter monitoring, liquid level measurement and flow measurement.

Filter Monitoring

Filtration is a vital part of an efficient operation in industrial process systems. A differential pressure gauge can be used to detect a contaminated or clogged filter. As the filter collects foreign materials, the pressure before the filter builds up. The Differential pressure gauge measures the pressure before and after the filter. The more the filter gets clogged with particles, the more the differential pressure increases. Once the differential pressure reaches a maximum value, then the operator knows that the filter needs to be changed.

Liquid Level Monitoring

Sealed tanks often have an atmospheric pressure gas blanket on top of the contained liquid. The pressure of the gas blanket adds to the hydrostatic pressure created by the water column of the content. This makes it difficult to get an accurate level measurement using a conventional pressure gauge. A differential pressure gauge measures the difference in gas pressure from the total pressure, thus translating into a true liquid level reading. Differential pressure gauges can also be used on production and injection wells to measure the difference between reservoir pressure and bottom-hole pressure, or between injection pressure and average reservoir pressure.

Flow Monitoring

Differential pressure gauges are also used to measure the flow of a liquid inside a pipe. Utilizing an orifice plate, venturi, or flow nozzle to reduce the diameter inside a pipe; the differential pressure gauge measures the pressure before and after the orifice. The pressure drop across the orifice is then mechanically translated by the differential pressure gauge into the flow rate. Differential pressure gauges are an uncomplicated solution for a visual indicator when measuring process flow.

Why WIKA
WIKA Instrument Corporation offers a wide variety of differential pressure gauges that are best suited for industrial processing applications. WIKA's differential pressure gauges offer an assortment of housing materials, wetted parts, dial sizes, connection types, mounting configurations, and custom dial art work. Design options include: piston-style, dual diaphragm and the all-welded/all stainless steel models.

Piston-style differential pressure gauges (Wika Type 700.04) are designed for a long service life. The piston-style differential pressure gauges are best suited for use with clean liquid or gaseous media where low differential pressure ranges and static working pressures are required. Piston-style differential pressure gauges are also available with a separating diaphragm (Wika Type 700.05) for applications that do not tolerate a flow-by, such as liquid level applications. Both feature a 7 year limited warranty.

Dual diaphragm differential pressure gauges are ideal for applications requiring high working pressure in combination with very low differential pressure. The pressurized components are mounted outside the case and face plate for maximum safety. Dual diaphragm differential pressure gauges feature an all stainless steel construction with 316 wetted parts. These gauges are suitable for high working pressures up to 3600 psi regardless of scale range.

The all-welded/all stainless steel construction model (Wika Type 732.51) is best suited for applications with corrosive atmospheres or media, pressure pulsation, system vibration, wide range of ambient temperatures, or high media temperatures.

Don't overlook where a difference can be seen. WIKA Instrument Corporation's differential pressure gauges are available in an assortment of styles, designs, and solutions that are perfect for industrial process systems.

For additional information please visit our website www.forberg.com or contact Forberg Scientific customer service.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

Safety Critical Protection Systems: Implementing Pressure Sensor Signal Redundancy to Lower Costs

2011-07-13T11:48:00.003-04:00

Written By: Jürgen Reiser, Product Manager, Electronic Pressure Measurement, WIKA Alexander Wiegand GmbH & Co. KG, Germany and Martin Armson, Director of Electronic Pressure Measurement, WIKA Instrument Corporation, USA

In today’s world, safe working conditions are increasingly mandated by legislation and voluntary codes of practice. Automated load monitoring systems using pressure transmitters are becoming instrumental in creating safe working environments. They play an important part in making certain that machine control systems used in utility vehicles including cranes, lifting platforms and fork-lift trucks perform with precision, accuracy, and most importantly reliability. ‘Failsafe’ is the keyword that drives system designers to be ever more creative. System redundancy is a design concept that helps meet these regulatory requirements. Pressure transmitter based systems must guarantee that systematic failures within hydraulic controls are eliminated and random error functions are identified so that all moving parts are shut down if a dangerous condition exists.

In typical load and load-moment monitoring applications, pressure is measured at the hydraulic cylinder of the boom, the hydraulic pump of the traction drive, or at the pressure reservoir of the brake system. Any malfunction of a pressure transmitter may lead to a critical condition of the system. A malfunction may be caused by extreme environmental conditions (EMC, humidity, shock and vibration, or physical damage). It can also be caused by abnormal operating conditions including an overload of the pressure sensor caused by pressure spikes. Erratic software failures in the subsystem program or a defective electronic component may also be a source of an incorrect pressure transmitter and/or system output signal.

Machine designers take many preventative steps to provide a continuously safe operating condition. One easy, practical, and common solution is to use two pressure sensors at the same measurement point. A redundancy check of the two output signals is made in the machine logic control circuit to detect any unexpected deviation in pressure transmitter readings.

The disadvantages of this approach are that an additional pressure port with separate sealing is required, as are additional electrical connectors with mating connectors. A larger number of electrical components are required to use two individual pressure sensors. From a safety standpoint, this increased complexity presents additional opportunities for failure.

The WIKA Answer: ‘2 in 1‘ Pressure Sensor MHS-1

WIKA’s MHS-1 pressure transmitter offers the first integrated dual pressure sensors, manufactured specifically for safety- critical and safety-related applications in mobile hydraulics. Dual (2 channel) pressure measurement, separate electrical signal processing and two independent 4-20mA output signals enable control-side redundant monitoring for pressure measurement points.

It is now possible for Channel 1 to be a pressure sensor with measuring range 0-3000 PSI with a 4-20mA proportional electrical output signal and for Channel 2 to be 0-5000PSI for 4-20mA. Note: the pressure sensor with the smaller measurement range is selected for the maximum possible system pressure as both pressure sensors have only a single mechanical process connection. The use of identical pressure ranges or a reverse scaling of the second signal to 20-4 mA is also possible.

A random hardware or software error of the safety-critical load monitoring system can be detected by monitoring the dual pressure sensors in the control system, and the actuator can be set to a safe condition if a hazardous condition is detected. Therefore, the probability of a dangerous failure is substantially reduced. This solution increases the process security and is cost effective since the mechanical and electrical installation costs are clearly lower than installing two individual pressure sensors.

TÜV certified Safety
The MHS-1 is designed to meet both the ISO 13849-1 (performance level - PL) and IEC 61508 (Safety Integrity Level - SIL) safety standards. It is certified by TÜV, a recognized and independent test laboratory. The requirements of the new European Machinery Directive (2006/42/EC), which becomes mandatory in Europe at the end of 2009, have already been met.

Safety-related characteristics available from WIKA for the pressure sensor include, “Mean Time to Failure” – (MTTF values). A complete safety-related control system can be evaluated by the user quickly and easily. The MHS-1 achieves the Safety Integrity Level SIL 2 in accordance with IEC 61508 and safety category 3 Performance Level d in accordance with ISO 13849-1.

Robust Design for demanding environmental conditions
WIKA‘s hermetically-sealed, welded, dry thin-film measuring cell with its sputtered Wheatstone bridge offers long-term stability in applications with high dynamic load changes. Thin-film sensors feature excellent resistance to pressure spikes. In addition, an arc eroded pressure port and cavitation damping system integral to the process connection minimizes the possibility of pressure sensor failure. The electronics are designed for harsh EMC conditions up to 100 V/m. The robust stainless steel housing and the IP 69K high pressure steam washdown rated electrical connection are designed and extensively tested for the extreme conditions often encountered in mobile hydraulics.

Customer-specific Designs
WIKA has various safety-evaluated designs available for a variety of applications both with and without sensory overload detection. WIKA’s flexible instrument assembly and modern production system supports custom designs.

See the complete line of WIKA electronic pressure measurement products
Contact Forberg Scientific Customer Service
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

Installing the Wrong Pressure Transmitter Can be Dangerous

2011-07-12T09:06:00.004-04:00

Author: Wika Application Notes

Whether it’s protecting human life, protection of expensive equipment, or meeting installation codes, safety is the number one concern when working in hazardous areas when there is a concentration of flammable gases, vapors or dust. Many pressure transmitter users in petrochemical, chemical, or refineries are unaware of the potential dangers of selecting the wrong pressure transmitter for their application. Using the correct pressure transmitter can mean the difference between causing and preventing a fire or explosion.

A non-rated pressure transmitter can create severe safety issues for both equipment and employees. Improper installation or use may damage the pressure transmitter making it a possible ignition source.

To help alleviate this concern, hazardous area pressure transmitters minimize these potential safety hazards. They are available in a variety of designs and approval ratings including explosion proof, non-incendive and intrinsically safe.

Hazardous Area Pressure Transmitters
Explosion-Proof pressure transmitters are based on the theory of containment and are designed for applications requiring Class 1, Division I approvals. These pressure transmitters are designed to contain, control, cool and vent any possible ignition, without igniting the surrounding flammable gases or vapors. They require installation with conduit and seal offs to maintain the explosion proof rating.

Non-Incendive explosion-proof pressure transmitters are preferred when potential hazards are only occasionally present. They are designed to work in Class 1, Division II hazardous areas and require less stringent installation procedures than explosion-proof pressure transmitters.

Intrinsically Safe explosion-proof pressure transmitters are designed to limit the thermal and electrical energy to a point where ignition is not possible. Intrinsically safe pressure transmitters require the use of an intrinsically safe barrier installed in the safe area. They do not require the use of conduit and conduit seals or need a “hot permit” if servicing of the instrument loop is required. This technology is standard in Europe and is becoming increasingly more popular in the United States.

Why Wika
Over the last six decades, WIKA Instrument Corporation has become a symbol for sophisticated solutions in the field of pressure and temperature measurement.

WIKA’s family of hazardous area pressure transmitters is suitable when applications do not require the full functionality of smart pressure transmitters. WIKA’s E-10, N-10 and IS-20 pressure transmitters all feature technology designed for use in hazardous locations. Features include pressure ranges of 30inHg vacuum to 15,000 psi; output signals of 4-20mA to 1-5v; and a variety of approvals. All are backed by a two year warranty.

Recommended WIKA Products for Hazardous Areas:

E-10: Class 1, Division 1 (Explosion-Proof)
N-10: Class 1, Division 2 (Non-Incendive)
IS-20: Class 1, Division 1 & Division 2 (Intrinsically Safe)

Safety Approvals

Whether the threat of potential danger is common or infrequent, WIKA cares about your safety and is ready to provide the right pressure transmitter for your hazardous area applications.

Data Sheets:
E-10 Explosion-Proof Pressure Transmitter
N-10 Non-Incendive Pressure Transmitter
IS-20 Intrinsically Safe Pressure Transmitter

If you are looking to purchase a Wika Pressure Transmitter please visit our website www.forberg.com or contact Forberg Scientific customer service.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

Ways to Prevent Pressure Gauge Failure

2011-07-08T09:03:00.002-04:00

Author: Wika

There are many products and services that can prevent pressure gauges from failing. Gauge audits and Best Practice Instrument Reviews are the best first line of defense. These reviews and audits will tell you which instruments are properly functioning and which ones should be replaced. There is a review of the gauges currently installed, gauges installed demonstrating unwanted conditions and of gauges installed demonstrating best practice. This review is provided by the team at the end of the review. Gauge audits and instrument reviews can be conducted to show and prevent mishandling and improper use of gauges.

A second line of defense could be to add a product or accessory to the configuration to alleviate the pressure or temperature. There are many products and services that can prevent pressure gauges from failing:

Mechanical vibration can be avoided by choosing the correct pressure gauge for the application. Depending on the application a liquid filled gauge might be needed over a dry gauge.
Pressure gauge snubbers avoid pulsation by absorbing pressure shocks and average out pressure fluctuations.
Cooling elements prevent temperature spikes by protecting the pressure instrument from high or low process temperature. Air flow across heat exchanging fins reduces or increases the temperature of the system fill fluid to protect the pressure measuring instrument.
Overpressure protectors are designed to avert spikes and overpressure damage. These protectors provide protection for pressure gauges against the effect of pressures exceeding their maximum pressure rating.
Mini-siphons can stop corrosion by eliminating gauge whip and vibration as well as, protects the pressure gauge from harmful steam, hot vapors and liquids, and contains a unique inner chamber that reduces pressure surges and “water hammer”.
Diaphragm seals protect the gauge from slurry or viscous service and prevent corrosive and noxious process materials from reaching the gauge.

If you are looking to purchase a Wika pressure gauge please visit our website www.forberg.com or contact Forberg Scientific customer service.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

Reasons Pressure Gauges Fail

2011-07-07T13:22:00.002-04:00

Author: Wika

Preventing pressure gauge failure is of critical importance in the field. Many times there is no way of knowing why a gauge has failed. However, many times it is preventable. Here are seven reasons why pressure gauges may fail:

1. Mechanical Vibration
The oscillating, reciprocating or other periodic motion of a rigid or elastic body or medium forced from a position or state of equilibrium

2. Pulsation
Rhythmical throbbing or vibrating; a periodically recurring alternate increase and decrease of a quantity (i.e., pressure, volume or voltage)

3. Temperature
Degree of hotness or coldness measured on a definite scale

4. Spikes / Overpressure
The maximum pressure that can be applied to a pressure instrument without significantly affecting its reading accuracy; pressure significantly above what is usual or normal

5. Corrosion
Wearing away gradually, usually by chemical action

6. Clogging
Becoming filled with extraneous matter

7. Mishandling / Improper Use
Handling badly, misusing, or using wrongly or improperly

If you are looking to purchase a Wika pressure gauge please visit our website www.forberg.com or contact Forberg Scientific customer service.
Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

Do I need a regulator? What does a regulator do?

2011-06-27T14:47:00.003-04:00

Author: David J. Connaughton
Blog: Compressed Air th Fourth Utility

Why do you need a regulator? Well, maybe you don't. Regulators of compressed air control the downstream pressure within a very tight range. Precision regulators are often two stage and can be approximated with two regulators in series. But are they always needed on an air line? Regulators should be used only when the downstream "work" that the compressed air is doing is sensitive to variations in pressure. Compressed air systems typically go up and down in pressure depending on the compressor's cycling and system demand. Spray painters should be especially careful to specify regulators because without them the air pressure to their gun will go up and down so the flow of paint from the nozzle will go up and down. Fluctuating flow changes how much paint is laid down. Air dryers, on the other hand, don't need a regulator up stream of them unless there is a chance that the air supply pressure can exceed the max pressure of the dryer. Dryer performance tends to improve with higher pressure due to a longer residence time at a given flow rate. So, as long as the performance is met at the minimum system pressure a regulator is not needed. Or is it?

Regulators serve another important function. Energy conservation. If your process only requires 60 psig, then setting your regulator to 60 psig assures that excess air is not wasted.

It is important to note that regulators do not control flow. At least not directly. Flow is governed by a valve or a fixed orifice. The flow through the valve is a function of the valve's upstream pressure so a given valve opening or orifice size, flow through it is less at 60 psig than it is at 100 psig. If there is no restriction of the air downstream of a regulator, the regulator will pass the maximum amout of air it can handle.

Wika Authorized Pressure Gauge Calibration / Diaphragm Seal Filling Center

2011-06-24T16:17:00.001-04:00

Forberg Scientific Inc. named as Wika Authorized Pressure Gauge Calibration / Diaphragm Seal Filling Center

Forberg Scientific has been certified by Wika Instruments as a factory-authorized provider of NIST traceable calibration services for pressure gauges and pressure transmitters. Forberg has also been certified as a factory-trained center to provide diaphragm seal filling services for all types of Wika diaphragm seal and pressure instrument combinations.

Forberg has invested in a state-of-the-art Wika designed fill-bench that allows us to fill both standard and mini diaphragm seals with a variety of fill fluids including glycerin, silicone, and halocarbon. Seals incorporating capillaries of various lengths can also be filled and tested by Forberg. All Forberg assembled diaphragm seals are 100% functionally tested prior to shipping to insure the highest possible quality standards.

You can contact Forberg Scientific Customer Service at 855-288-5330
Email: mechanicalsales@forberg.com

Parker Veriflo Moblie App

2011-06-23T13:49:00.001-04:00

Parker Veriflo is please to announce the launch of their new Mobile App. This App provides easy access to all Veriflo Product Catalogs and specifications "on-the-go" through you mobile browser.

Highlight of App:

Can beviewed on iPhone, iPad, iTouch, Android phones and all devices that have Safari or Google Chrome browsers.
Clean interface for easy navigation to all our products quickly
Email product catalogs
Configure product model numbers.
And all other convenient features of having a mobile device.

Please enter http://m.parker.com/veriflo to access this app on your mobile device's web browser.

Looking to Improve Product Quality in Clean Room Applications

2011-06-17T13:48:00.002-04:00

Are you looking to improve product quality, reduce down time, increase safety, or prevent batch losses in your Clean Rooms? ROTRONIC has over 40 years of experience with humidity measurement and temperature measurement. ROTRONIC can provide you the peace of mind with the most accurate sensors providing unmatched long term stability, combined with advanced digital technology for easy maintenance while meeting FDA and GMP requirements.

For an introduction to clean room applications and how ROTRONIC can help Please click here.

Source: www.iso.com

You can purchase these product from Forberg Scientific. If you would like to receive pricing and availability please contact the Forberg Process Customer Service at the following.
Phone: 248-288-5990
Email: processsales@forberg.com
website: www.autoctrls.com

Parker Tube Fittings Installation Instructions

2011-06-16T13:19:00.002-04:00

Forberg Scientific Inc. is a Parker Instrumentation Solution Center. For more than 40 years Forberg has been a leader in instrumentation and the industrial distribution field. Forberg Scientific is a distributor / manufacturer's representative organization with a passion for customer service and innovative problem solving.

Forberg Scientific Inc. offers Parker A-lok & Parker CPI Instrumentation Tube Fittings that are designed as leak-free connections for process, power and instrumentation applications. These world renowned fittings are manufactured to the highest quality standards and are available in a broad range of sizes, materials and configurations.

You can find Parker Tube Fittings and a large variety of other product lines we offer at www.forberg.com .
email: mechanicalsales@forberg.com

How does proper filtration and drying lower your plant's operating costs?

2011-06-10T09:46:00.001-04:00

Author: David J. Connaughton
Blog: Compressed Air the Fouth Utility

In almost all applications throughout your plant, clean, dry compressed air will result in lower operating costs. How is that? Oil, dirt and water in the compressed air coats the inside of pipes. This coating creates a source of pressure drop and the loss of pressure is the loss of energy. Water is particularly problematic as it can create corrosion that can be picked up by the air stream and will damage sensitive equipment downstream. In cold environments, this water will turn into ice and could even plug the lines. Filtration and air drying are an effective and cost efficient way to improve the efficiency of your plant air system.

What do I need to know to filter air used in a ISO class clean room?

2011-06-07T12:54:00.003-04:00

Author: David J. Connaughton
Blog: Compressed Air the Fourth Utility

A reader emailed me with an interesting situation that probably happens all the time. He has pneumatics inside a clean room but his "building" compressed air is neither dry nor clean. This poses a tricky situation as any sir that feeds this pneumatics must be clean enough to no contaminate the clean room. Also, these filters must no have automatic drains which could unexpectedly dump contaminant into the room. I recommended that he mount a dryer just outside the room. Our Parker Balston Membrane Air Dryers are a good choice as they don't use any electricity and are easy to install and maintain. The dryer assures that there will be no further condensation inside the clean room that would need to be drained fro the filters. Inside the clean room the filters must have manual drains and be of fairly high efficiency, at least 99.99% at 0.01 micron or higher.

Wika Bimetal Thermometers Available at Forberg.com

2011-06-03T09:33:00.005-04:00

Forberg Scientific offers a complete line of Wika Temperature Instruments including Bimetal Thermometers which are available for purchase at www.forberg.com . Styles ranging from pocket test thermometers to process grade thermometers and industrial-grade thermometers are available. These temperature instruments have cases and bezels that are made from sturdy, corrosion resistant 304 stainless steel and incorporate anti-parallax heavy gauge aluminum dials that incorporate a white matte finish to reduce glare. Stem lengths to 72 inches are available as well as 316SS stem and connector assemblies. Wika bimetal thermometers are guaranteed to be accurate to within one percent of full scale (Grade A per ASME B40.3). Calibration is to standards traceable to the National Institute of Standards and Technology. Wika extends a seven year warranty on standard bimetal thermometer types 30, 31, 50, 51, 32, & 52.

Bimetal Thermometer: Theory of Operation
The temperature is measured with a bimetal system inside the thermometer stem. The bimetal system consists of two metal strips bonded together that have different expansion coefficients. Therefore, one strip will expand faster than the other causing the bimetal strip to curl in proportion to its temperature. The bimetal system is helically wound and heat treated for long term stability. Temperature variations cause the bimetal strip to unwind or wind tighter, which in turn rotates the pointer.

United Electric Controls UE TX200H HART Smart Pressure Transmitter

2011-05-09T21:17:00.009-04:00

United Electric Controls News Release May 2, 2011

Watertown, MA - United Electric Controls introduces the TX200H, a HART smart pressure transmitter designed for the upstream oil and gas applications. The TX200H provides simplified field adjustment while reliably communicating asset management data utilizing the latest HART 7 specification.

A flexible 10:1 turndown on the pressure ranges from the 0 to 15 psi (0 to 1 bar) up to 0 to 25,000 psi (0 to 1724 bar) allow users to range the transmitter as application requirements change while reducing inventory levels through model reduction. The TX200H real-time diagnostics also reduce maintenance costs by reporting device health status and process performance, alerting users to potential problems to troubleshoot before escalation occurs.

The TX200H is constructed of 316 stainless steel, welded and hermetically sealed to meet enclosure type 4X and IP66 requirements. Its rugged design lends itself to being mounted directly onto the process or panel mounted within the control panel. Standard approvals include cULus for Class 1, Div.1 & 2, Zone 1 and ATEX Ex d and Ex tD hazardous areas. Is is CE compliant to both PED and EMC dirtectives.

Integrating the TX200H into most process systems is simple. Since HART communication is superimposed over the 4-20 mA signal, the TX200H can use existing wire as and upgraded. drop-in replacement for a standard analog 4-20 mA transmitter. A user may easily communicate with the TX200H utilizing a handheld device or a PC equipped with commercially available software.

To purchase the TX200H or get more information contact Forberg Scientific Customer Service Toll Free: 855-288-5330
Email: mechanicalsales@forberg.com

TX200H Data Sheet

Parker Tube Bender NEW Design

2011-04-29T13:42:00.010-04:00

We've got to say we have seen a lot of tubing benders throughout the time we've been in business. But with this new design, this is the best tubing bender you'll ever use. This on bends as smooth as butter!

Seven heavy-duty tube benders for small bore tube assembly in a wide variety of industries ranging from fluid instrumentation systems in process plants, laboratory equipment applications to custom automotive tubing manufacturing.

Sized for 1/4", 3/8" and 1/2" inch tubing, as well as 6mm, 8mm, 10mm and 12mm metric tubing. PTB Tube Benders are key to reliable, leak-free assembly, easily providing accurate, tight radius bends of up to 180 degrees on soft copper, aluminum, brass , steel, and stainless steel tubing.

All seven models feature a unique indexing handle with calibrated markings for making accurate, left-handed, right-handed, and offset bends. In addition, a patented, quick action trigger release easily repositions the tool midway through a bend when the handles meet.

Would you like to find out more about this tool. Contact your Forberg Scientific Sales Professional Toll Free: 855-288-5330 or you can email mechanicalsales@forberg.com.
Mention you learned about these on our blog and your receive free shipping to the continental united states.

Parker Tube Fabricating Equipment Catalog

Burkert Newly Designed Angle-Seat Control Valve Announced

2011-04-26T11:46:00.010-04:00

In line with Burkert's philosophy for modular valves and sensors the construction of the 2300 angle-seat valve fulfills tough criteria for process environments. Unrivalled cycle life and sealing integrity is guaranteed by the proven self-adjusting packing gland. the parabolic trim provides excellent control characteristics and flow rates approximately 35% larger than conventional control valves. It is available in either stainless steel on stainless steel or with a durable PTFE seal for tight shut-off.

The design enables the easy integration of automation modules whether they are digital electro-pneumatic positioner or process controller. The fully integrated system (part of Burkert's new Element line ) has a compact and smooth design, integrated pneumatic lines, IP65/67/NEMA4X protection class and superior chemical resistance. This system has been engineered for reliable accurate control in applications where high flow rate is an advantage. It's clean stainless steel design makes it optimal for use in hygienic environments.

Call your Forberg Scientific Sales Professional Toll Free: 855-288-5330 or email mechanicalsales@forberg.com

Burkert Element PDF