Friday, March 25, 2011

NEW April 4th Ones Series Differential Pressure Sensor Range 0-5 PSID

Announcement: On April 4th, 2011, A new range added to all One Series electronic switches. The new range available is 0-5 PSID. The differential sensor has a 0 - 5 psid range with 0.5% accuracy, 0.1% repeatability and 0.08% temperature drift of full scale per Celsius. The body of the sensor is stainless steel with similar construction to the existing ranges. Wetted materials are all welded 316L stainless steel diaphragms for the high and low 1/4" NPT (male) process connections. Effective April 4th, Forberg Scientific customer service will be ready to take your One Series orders with the new range sensors.
One Series Bulletin

Forberg Scientific Customer Service
Toll Free: 855-288-5330
Fax: 248-288-4204

Thursday, March 3, 2011

How to choose a Hall Effect Speed Sensor

by: Pierre Grimes

I have been a distributor for AI-Tek Speed Sensors for over 40 years. On several occasions I have been asked what is the difference between a TTL output and a Supply Tracking output. This is a very good question and I will try to post a straight forward, easy to understand what's going on without having to be an electronics's guru. The speed sensors I sold can be found at .

Basically if the distance between the hall effect sensor and the receiving tachometer is less than 200 feet, a TTL output should work very well. But if the distance is approaching 1000 feet or more, it might be a good idea to use supply tracking to take into account line losses which could weaken the signal at the receiving instrument or tachometer. The receiving instrument could be an input to a PLC. Always check in the input specifications on the instrument (Tachometer) that will process or display the RPM or Count from a Hall Effect Sensor. Take a look at the hall effect sensors available from Automatic Controls .