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…

Leading Manufacturers

West Conshohocken, PA  |  610-825-3310

Strainsert specializes in standard and custom pressure transducers for industry leaders in space, on the ground and in the ocean. With a warranty that's twice the standard, we are confident our comprehensive design, testing, service and support will meet your unique purpose. We have the optimal force sensing solution for research, testing and control applications!

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Strainsert Company $$$

McCordsville, IN  |  877-406-3215

Since 1985, Proportion-Air has been designing and manufacture electro-pneumatic devices for force, flow, position, pressure, temperature, tension, torque, or vacuum control. We offer an extensive selection of pressure transducers to measure fluids or gases plus linear transducers. Call or visit our website today!

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Proportion-Air $$$

Stratford, CT  |  203-378-8281

Ashcroft® manufactures a full line of high-quality pressure transducers for reliable use in applications for high-volume OEM, general and heavy industrial and HVAC. Our line offers products with award-winning features. Our company realizes that as times change, so do the needs of industry. Products we manufacture have become the benchmark in our industry.

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Ashcroft® Inc. $$$

Cincinnati, OH  |  513-583-9491

Transducers Direct manufactures a wide range of high quality pressure transducers for industrial, IoT and Home Automation markets. Transducers Direct specializes in Wireless Pressure Transducers, as well as Wired Pressure Transducers that come in a variety of configurations. The pressure transducers are fully customizable which makes them suitable for any application.

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Transducers Direct, LLC $$$

Toronto, ON  |  800-817-3486

With over 13 years experience, we manufacture premium melt pressure transducers, melt pressure transmitters and instrumentation for the plastic extrusion industry. Our complete range of products includes mechanical and digital melt pressure gauges, indicators, controllers and rupture disks.

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MPI Melt Pressure $$$
placeholder image Strainsert Company Proportion-Air Ashcroft® Inc. Transducers Direct, LLC MPI Melt Pressure

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.