Pressure Transducer

Last updated Oct 6, 2023

Measures pressure. Some common designs use a flexible diaphram, strain gauge, capacitance, or piezoelectric sensors to convert a pressure into an electrical signal. Similar concepts in the Altimeter which converts ambient air pressure to mechanical movement, which translates to a dial location on the panel of a cockpit.

A fluid exerts pressure on the strain gage, which becomes deformed, which results in a voltage variation which corresponds to the magnitude of the pressure.

A non-static (dynamic) pressure transducer. One type uses strain gauges bonded to a diaphragm so that deformations in the diaphragm result in differences in resistance in the strain gauge. These are typically arranged in a Wheatstone Bridgeconfiguration which translates this to a voltage reading.

https://www.omega.com/en-us/resources/pressure-transducers-how-it-works