Monday, June 27, 2011

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

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.

Friday, June 24, 2011

Wika Authorized Pressure Gauge Calibration / Diaphragm Seal Filling Center

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

Thursday, June 23, 2011

Parker Veriflo Moblie App

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 to access this app on your mobile device's web browser.

Friday, June 17, 2011

Looking to Improve Product Quality in Clean Room Applications

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 measurementROTRONIC 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.

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

Thursday, June 16, 2011

Parker Tube Fittings Installation Instructions

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 .

Friday, June 10, 2011

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

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.

Tuesday, June 7, 2011

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

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.

Friday, June 3, 2011

Wika Bimetal Thermometers Available at

Forberg Scientific offers a complete line of Wika Temperature Instruments including Bimetal Thermometers which are available for purchase at . 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.