Pressure Sensor

The piezoelectric pressure sensor is based on the piezoelectric principle discovered by Jacques and Pierre Curie in 1880. They found that the surfaces of certain crystals including quartz become electrically charged when the crystal is subjected to mechanical stress. This charge is exactly proportional to the force acting on the crystal and is measured in picocoulombs (1 pc = 10-12 coulomb). As active devices, piezoelectric pressure sensors can only measure quasistatic as opposed to truly static processes. This type of pressure sensor is therefore ideal for dynamic measurement. It is used wherever rapid changes in pressure at temperatures up to 400