Electronic Pressure Sensors
- Piezoresistive Strain Gage
- Uses the piezoresistive effect of bonded or formed strain gauges to detect strain due to applied pressure.
- Capacitive
- Uses a diaphragm and pressure cavity to create a variable capacitor to detect strain due to applied pressure.
- Magnetic
- Measures the displacement of a diaphragm by means of changes in inductance (reluctance), LVDT, Hall Effect, or by eddy current principal.
- Piezoelectric
- Uses the piezoelectric effect in certain materials such as quartz to measure the strain upon the sensing mechanism due to pressure.
- Optical
- Uses the physical change of an optical fiber to detect strain due applied pressure.
- Potentiometric
- Uses the motion of a wiper along a resistive mechanism to detect the strain caused by applied pressure.
- Resonant
- Uses the changes in resonant frequency in a sensing mechanism to measure stress, or changes in gas density, caused by applied pressure.
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