Setra Blog

 Pressure Transducers in Test & Measurement:

Particle Test & Analysis

Pressure transducers are commonly used in particle test and analysis applications. Learn how sensors are used within three different scenarios of particle test and analysis.

Porosimeters/Permeameters

These products are utilized for grain volume measurements, direct pore volume measurements, and grain density determination. 

Thin Film Technology Strain Gauge

Thin film pressure transducers are made by vapor deposition or sputtering of insulation and strain gauge elements directly on a polished pressure sensing diaphragm or beam. The desired strain gauge pattern is deposited either by masking the non-conductive areas or by etching away unwanted conductive material. Laser trimming is used to calibrate the resistive elements.

Many of the following technical specifications appear on datasheets for pressure transducers and similar devices. Here we review their technical definitions and relationships.

Root Sum Squares (RSS): accuracy of a pressure transducer is calculated by taking the square root of non-linearity + hysteresis + non-repeatability.

3 Ways To Have Room In Your Budget For An Energy Management System

With smart meter demand rising, price points still don't seem to be budging from its premium peak. Many don't realize that with an energy management program in place, the return outweigh the costs. Finding a budget is the first obstacle that needs to be tackled when looking into this expensive solution.

For an updated glossary, please visit our FAQ page.

Alternating Current - current that reverses its direction of flow periodically (Hz).

Ampere - a unit of measure for the rate of current flow

Apparent Power - applied voltage multiplied by current in an AC circuit. This value would not take the power factor into account. Unit is volt amperes. (VA).

Popular Types of Current Sensors

Current Shunts

Current Shunts are low value resistors that are inserted into a circuit. The shunt provides terminals to connects the sensed current and voltage monitoring terminals. The commercially available shunts have sensed current ranges from less than 1A to several hundred amps.

Pounds per square inch (PSI) is a common unit of pressure used in many different pressure measuring applications. It’s typically used for non-SI industrial and technical purposes such as tire pressure, fuel storage & distribution, waste water management, and test & measurement activities, among many others.

Humidity sensing is important, especially during the cold winter months that many of us are currently experiencing. Properly installing and using humidity transmitters helps building automation systems understand when the air becomes too dry or too humid for comfort.

ACREX India 2015 to Be Hosted in Bangalore February 26-28

Last year ACREX India saw 30,000 visitors and 400 exhibitors from 25 countries gather in Pargati Maidan, New Delhi for the largest show on Air Conditioning, Ventilation, Refrigeration and Building Services. Not only did the trade show feature innovative new products from exhibitors, but eWorkshops and interactive panel discussions were available for all attendees. 

Technology Trends at the 2015 AHR Expo

A week ago the 2015 AHR Expo kicked off at McCormick Place in Chicago. Not only were there 8% more exhibitors than last year's expo, but an extensive number of new HVACR products and technologies were featured at various booths. Setra was among these companies using the AHR Expo as a platform to launch the latest products in HVACR.