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Atmospheric Pressure Sensors

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Atmospheric Pressure Sensors

Atmospheric pressure sensors, also known as air pressure sensors in some contexts, measure the force exerted by the weight of air and convert the information from electrical energy to a readable display. Sensors take the energy from the force of the pressure and change it into a comprehensible form that can be read from a gauge or display. Sensors are used extensively in meteorology to help identify weather patterns and predict upcoming storms. Read More…

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Leading Manufacturers

Boxborough, MA  |  800-257-3872

We design and manufacture acceleration, pressure and weight sensing products. Setra makes fuel cell pressure transducers, industrial strain gauge pressure transducers, HVAC/R pressure transducers, ultra-high purity and vacuum pressure transducers plus other types. We've been in business since 1967.

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Setra Systems, Inc. $$$

Attleboro, MA  |  508-236-3800

Sensata Technologies is known for many items. Among these are pressure transducers, used for industrial and HVAC/R gas and liquid sensing. These pressure transducers are available as sealed gauge, gauge or absolute. If one of our standard offerings doesn't suit your need, we will customize.

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Sensata Technologies, Inc. $$$

Hudson, MA  |  800-343-4492

Since 1971, Thermalogic has been a leading manufacturer of electronic temperature and humidity control and sensors. Here at Thermalogic we work with our clients in a partnership to build a lasting business relationship. All of our products have quick turnaround times, including custom designs, and are thoroughly tested prior to being sent out. At Thermalogic we pride ourselves on our high quality, industrial grade, reliable products. Contact us today to get started!

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Thermalogic Corporation $$$

Amherst, NH  |  800-216-3636

ControlAir is a worldwide leading manufacturer of precision pneumatic and electro pneumatic control products essential to automated industrial equipment, process control systems and instrumentation, laboratory research and analysis, energy management, fluid power, robotics, and valve automation applications. An ISO-9001:2015 registered quality system assures tightly controlled specifications and processes, resulting in dependable pneumatic controls.

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ControlAir, Inc. $$$

Northridge, CA  |  818-886-2057

For over 41 years Validyne Engineering has been designing, marketing, manufacturing and servicing a broad range of pressure transducers & transmitters having full scale ranges from 0.1 in h20 to 12,500 psi and signal conditioning & data acquisition system. Over 3,000 customized "specials" have been derived from their standard product offerings.

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Validyne Engineering Corp. $$$
placeholder image Setra Systems, Inc. Sensata Technologies, Inc. Thermalogic Corporation ControlAir, Inc. Validyne Engineering Corp.

Scientists use atmospheric pressure sensors during research and experiments because substances behave differently when under pressure. Atmospheric pressure sensors are also called barometric pressure sensors, because barometers are instruments that measure atmospheric pressure, which is the force per unit area exerted against a surface by the weight of air. A column of air measured from sea level to the top of the atmosphere weighs approximately 14.7 pounds per square inch (PSI). There is less pressure at high elevations because there is not as much air or atmosphere above: the higher above sea level, the lower the pressure.

SITRANS P280 Wireless Pressure Transmitter SITRANS P280 Wireless Pressure Transmitter - Siemens Process Instrumentation

Because atmospheric pressure varies, these sensors are useful and very important. The size and shape of these sensors varies depending on the intended application. For example, scientists hiking up a volcano will use a battery powered sensor with a thick plastic case to protect it from the rough conditions whereas research conducted in a lab requires only a small electronic model. Atmospheric pressure sensors provide mountaineers with information about their elevation, helping keep them safe.

Atmospheric pressure sensors are designed using a silicon diaphragm that bends or resonates with increased and decreased intensities, depending on the pressure. For example, on top of a mountain the diaphragm would not have as much pressure from the atmosphere above and would therefore not bend as much as it would at sea level, where the air column exerting force is taller and weighs more.

A charge running through the sensor detects and transmits the frequency information to the display, usually producing a reading that compares the atmospheric pressure to absolute pressure, or the pressure of a perfect vacuum, which is 0 PSI.

This provides a common starting place for readings and helps standardize results that are important to the scientific community. Atmospheric pressure sensors need to be calibrated at times to ensure that the readings are accurate. Calibrators are instruments that make sure that everything is functioning correctly and accurately; it is a safety hazard if air pressure is unregulated or misread. Air is less dense at lower pressures and is therefore much cooler than at normal elevation; many atmospheric pressure sensors have a temperature compensation feature to take this into account.