Capacitive Ceramic Pressure Sensors

Capacitance based pressure sensors are conventionally used where low pressure measurement is required but with high over pressure capability. The diaphragm acts as one side of the capacitor and therefore when deformed by applied pressure the capacitance value changes. The high over pressure capability is achieved by the second capacitor plate (the body of the sensor) acts as a stop which prevents the diaphragm from being over stretched and destroyed. They are inherantly stable over temperature, have excellent repeatibility and are therefore considered a premium technology for pressure and hydrostatic level measurement.