Material of pressure transmitter
The piezoelectric materials mainly used in pressure transmitters are quartz, dihydrogen phosphate and potassium sodium tartrate. Quartz, it is a natural crystal. Within a certain temperature range, the piezoelectric property always exists, but after the temperature exceeds this range, the piezoelectric property completely disappears, and the piezoelectric effect is found in this crystal. Dihydrogen phosphate is an artificial crystal that can withstand high temperatures and relatively high humidity, so it has been widely used. Potassium sodium tartrate has great piezoelectric sensitivity and piezoelectric coefficient, but it can only be used in environments where room temperature and humidity are relatively low.
