抗腐蚀的陶瓷压力变送器没有液体的传递，压力直接作用在陶瓷膜片的前表面，使膜片产生微小的形变，厚膜电阻印刷在陶瓷膜片的背面，连接成一个惠斯通电桥闭桥，由于压敏电阻的压阻效应，使电桥产生一个与压力成正比的高度线性、与激励电压也成正比的电压信号，标准的信号根据压力量程的不同标定为2.0 / 3.0 / 3.3 mV/V等，可以和应变式变送器相兼容。通过激光标定，变送器具有很高的温度稳定性和时间稳定性，变送器自带温度补偿0～70℃，并可以和绝大多数介质直接接触。陶瓷是一种公认的高弹性、抗腐蚀、抗磨损、抗冲击和振动的材料。陶瓷的热稳定特性及它的厚膜电阻可以使它的工作温度范围高达-40～135℃，而且具有测量的高精度、高稳定性。电气绝缘程度>2kV，输出信号强，长期稳定性好。
Corrosion of ceramic pressure sensor no liquid transfer, pressure acting directly on the surface of ceramic diaphragm before, produce tiny deformation of diaphragm, thick film resistance in the back of the diaphragm printing ceramic, connected to a hui stone bridge closed bridge, because of pressure sensitive resistance the piezoresistive effect, make the bridge produce a and pressure proportional to the highly linear, and the incentive is proportional to the voltage signal, the standard voltage signal pressure range according to different calibration for 2.0/3.0/3.3 mV/V etc, can and strain sensor compatible. Through the laser sensor calibration, has high temperature stability and time stability, sensor bring their own temperature compensation 0 ~ 70 ℃, and can and most direct contact with the medium. Ceramic is known as a "high elastic, corrosion resistance, abrasion resistance, impact resistance and vibration of the material. Ceramic thermal stability of the characteristics and its thick film resistor can make it work temperature range as high as 40 ~ 135 ℃, and with high accuracy measurement, high stability. Electrical insulation degree > 2 kV, output signal is strong, better long-term stability.
高特性，低价格的陶瓷变送器将是压力变送器的发展方向，在欧美国家有全面替代其它类型变送器的趋势，在中国也越来越多的用户使用陶瓷变送器替代扩散硅压力变送器。 3、扩散硅压力变送器原理及应用工作原理被测介质的压力直接作用于变送器的膜片上（不锈钢或陶瓷），使膜片产生与介质压力成正比的微位移，使变送器的电阻值发生变化，和用电子线路检测这一变化，并转换输出一个对应于这一压力的标准测量信号。原理图 4、压电压力变送器原理与应用压电变送器中主要使用的压电材料包括有石英、酒石酸钾钠和磷酸二氢胺。其中石英（二氧化硅）是一种天然晶体，压电效应就是在这种晶体中发现的，在一定的温度范围之内，压电性质一直存在，但温度超过这个范围之后，压电性质完全消失（这个高温就是所谓的“居里点”）。由于随着应力的变化电场变化微小（也就说压电系数比较低），所以石英逐渐被其他的压电晶体所替代。而酒石酸钾钠具有很大的压电灵敏度和压电系数，但是它只能在室温和湿度比较低的环境下才能够应用。磷酸二氢胺属于人造晶体，能够承受高温和相当高的湿度，所以已经得到了广泛的应用。
Low price, high characteristics of ceramic sensors will is the development direction of the pressure sensor, in the European and American countries have fully replace other types of sensor trend, in China also more and more users use ceramic sensors alternative diffusion silicon pressure sensor. Three, the proliferation silicon pressure sensor principle and application of the principle of work the medium pressure sensor direct role in the diaphragm (stainless steel or ceramic), make the diaphragm produce and medium pressure proportional to the micro displacement, make the sensor resistance changes, and the use of electronic circuit test this change, and converting output a corresponding to the pressure of the standard to measure the signal. Principle figure 4, piezoelectric pressure sensor principle and application of piezoelectric sensors used mainly of piezoelectric materials including quartz, tartaric acid sodium and potassium dihydrogen phosphate amine. One quartz (silica) is a kind of natural crystal, piezoelectric effect in the crystal is found in, in a certain temperature range, piezoelectric properties has always been there, but more than this range, the temperature after piezoelectric properties disappear completely (the high temperature is the so-called "Curie point"). With the change of stress due to electric field (also said changes small piezoelectric coefficient is low), so gradually by other quartz piezoelectric crystals instead. And tartaric acid potassium sodium of great piezoelectric sensitivity and piezoelectric coefficient, but it can only in room temperature and humidity is low environment to the application. Dihydrogen phosphate amine are synthetic crystals, to withstand high temperature and high humidity, so has been widely used.
现在压电效应也应用在多晶体上，比如现在的压电陶瓷，包括钛酸钡压电陶瓷、PZT、铌酸盐系压电陶瓷、铌镁酸铅压电陶瓷等等。压电效应是压电变送器的主要工作原理，压电变送器不能用于静态测量，因为经过外力作用后的电荷，只有在回路具有无限大的输入阻抗时才得到保存。实际的情况不是这样的，所以这决定了压电变送器只能够测量动态的应力。压电变送器主要应用在加速度、压力和力等的测量中。压电式加速度变送器是一种常用的加速度计。它具有结构简单、体积小、重量轻、使用寿命长等优异的特点。压电式加速度变送器在飞机、汽车、船舶、桥梁和建筑的振动和冲击测量中已经得到了广泛的应用，特别是航空和宇航领域中更有它的特殊地位。压电式变送器也可以用来测量发动机内部燃烧压力的测量与真空度的测量。也可以用于军事工业，例如用它来测量枪炮子弹在膛中击发的一瞬间的膛压的变化和炮口的冲击波压力。它既可以用来测量大的压力，也可以用来测量微小的压力。压电式变送器也广泛应用在生物医学测量中，比如说心室导管式微音器就是由压电变送器制成的，因为测量动态压力是如此普遍，所以压电变送器的应用就非常广泛。
Now piezoelectric effect also applied in the polycrystal, such as this, including piezoelectric ceramic barium titanate piezoelectric ceramics, PZT, niobium acid salt is piezoelectric ceramics, niobium magnesium lead acid piezoelectric ceramic, etc. Piezoelectric effect is the main principle piezoelectric sensors, piezoelectric sensors can not be used in the static measurement, because through the external force, only in charge after the input impedance of the infinite loop has only been preserved. The actual situation are not like that, so that will decide the piezoelectric sensors that can measure the dynamic stress only. Piezoelectric sensors are mainly applied in the acceleration, the pressure, and the power of measurement. The piezoelectric acceleration sensor is a kind of common accelerometer. It is simple in structure, small volume, light weight, long life and other excellent characteristics. The piezoelectric acceleration sensors in airplanes, cars, ships, Bridges and buildings vibration and impact measurement has a wide range of applications, especially in the field of aviation and aerospace more has its special status. The piezoelectric sensors can also be used to measure the internal combustion engine measure pressure and vacuum measurement. Can also be used for military industry, such as using it to measure the bullet in the chamber guns firing moment of the change of the bore pressure and the muzzle blast pressure. It can be used to measure the pressure, but also can be used to measure small pressure. The piezoelectric sensors are also widely used in biomedical measurement, for example ventricular catheter WeiYinQi type is made by piezoelectric sensors, for measuring dynamic pressure is so common, so the application of piezoelectric sensors is very extensive.