Setra Blog

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.

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.

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.

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.

The 2015 International Consumer Electronics Show

For four days, Las Vegas was home to some of the most innovative technology products ever seen. This year's International CES kicked off on January 6th, and had not only the most technologically advanced products featured on the show floor, but also gave attendees the opportunity to listen to presentations given by some of the brightest in the industry.

Industrial Pressure Sensors in Gauge, Absolute and Sealed Gauge Ranges

System designers are usually aware of the specific differences between these types of pressure measurements. The pressure of interest is being measured relative to ambient barometric, full vacuum, or a sealed reference chamber, respectively.

Rail Industry Cost and Energy Savings Found in Alternative Fuels

Locomotives have long been the lifeblood of commerce within a country. These massive machines transport everything from oil, food, clothes, large wind turbine parts, to people. These freight hauling giants require massive engines to make their cross country and regional trips in order to deliver products that consumers depend on every day. 

Industrial pressure transducers are used in a wide variety of applications ranging from HVAC/R compressors, refrigeration and variable speed pumps to hydraulic pressure, oil and water. A transducer can be used anywhere there's a pipeline or chamber, its function is to sense and convert pressures into a proportional electrical output signal that is transmitted to monitoring or control system.

For high line pressure, high differential pressure applications

The pressure difference across an orifice plate, filter, pump, valve, etc. can be sensed with two pressure transducers such as the Model 206. One transducer measures the high side pressure (P₁) while the other measure the low side pressure (P₂). Pressure media can be any liquid or gas compatible with 17-4 pH stainless steel.

Traditional vs. Remote Sensor Installation

To better understand the labor and material savings made possible by remote sensors, it is important to compare the traditional method of installing differential pressure transmitters with the new method of installing remote sensors. On a typical job using the conventional method, the mechanical contractor first installs taps with shutoff valves—usually a ball or petcock valve—in the desired locations in the mechanical piping.