Kistler Group Piezoelectric Pressure Sensor 603CAA

Due to their high natural frequencies, piezoelectric pressure sensors can be used for a variety of applications where dynamic pressures need to be measured. Another unique characteristic of piezoelectric pressure sensors is their ability to measure small pressure fluctuations that are superimposed on top of high static pressures with exceptional resolution. By contrast, piezoresistive pressure sensors are the right choice when measuring static pressure curves. At the core of the all-welded, hermetically sealed 603C series there is a Quartz crystal. The pressure to be measured acts on the sensor’s diaphragm and compresses the Quartz crystal. The compressed crystal produces a charge which is proportional to the pressure. Finally the charge signal needs to be converted, by a charge amplifier, into a voltage which can then be read.