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The majority of pressure sensors do not measure the pressure directly. Being a composite sensor, it consists of a sensing element that takes a primary reading (most commonly deformation followed by displacement, force or strain) and translates it to another non-electric physical quantity. Another sensor then translates this into an electrical signal that represents the output of the pressure sensor.
- A change in pressure causes the diaphragm to diaphragm to deflect, a corresponding change in resistance is induced on the strain gauge.
- This changes can be measured by DAQ system.
- A metal is strongly bonded in the nearby surface where the strain is being measured.
- Bonded foils have quick have quick 1000 Hz response times to changes in pressure as well as their large operating temperature.
Types of pressure sensors
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