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Honeywell Sensotec Frequently Asked Questions

What is an Absolute Pressure Sensor?


Illustration of an Absolute Pressure Sensor Illustration of an Absolute Pressure Sensor
An absolute pressure sensor is a bonded foil strain gage-based pressure sensor designed to measure applied pressure referenced to sealed vacuum, or absolute zero pressure.

An absolute pressure sensor operates in the same way as a bonded foil strain gage-based pressure sensor. As pressure is applied to a diaphragm, pressure is transmitted to a gaged element via a mechanical connection, such as a bolt. As the gaged element is deflected, strain gages, which are bonded to the element, reflect this as a change in resistance. The bridge circuit identifies the resulting change in electrical resistance as a change in applied pressure to the sensor.

(Consult the Pressure Reference Chart to compare how the various pressure sensors reference pressure.)



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