Piezoelectric (PE) pressure sensors, pressure transducers for smallest dynamic measurements up to 10 bar (145 psi) / 7261

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 7261 series is a quartz crystal. The pressure to be measured acts on the sensor’s diaphragm and compresses the 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 to a voltage which can then be read.