Main use of piezoelectric materials in piezoelectric pressure sensor consists of quartz, sodium potassium tartrate and ammonium dihydrogen phosphate. Quartz (silica) is a kind of natural crystal, piezoelectric effect is found in the crystal, within certain limits of temperature, the piezoelectric properties have always existed, but after the temperature exceeds the scope, the piezoelectric properties disappear completely (the high temperature is the so-called "Curie point"). Due to the changes as the change of stress field of tiny (also said piezoelectric coefficient is low), so is gradually replaced by other piezoelectric crystal quartz. And sodium potassium tartrate has great sensitivity and piezoelectric piezoelectric coefficient, but it can only be at room temperature and low humidity environment to the application.

Pressure sensors are mainly offset error, error, linear error and hysteresis error sensitivity, reasonable pressure sensor error compensation is the key to its application.