变送器是直接与被测介质接触的现场仪表,常常在高温、低温、腐蚀、振动、冲击等环境中工作。由于工艺流程的大型化、复杂化及电子计算机的应用,对检测仪表的精度、稳定性、可靠性提出了更高的要求。面对这种情况,世界各国竞相研制新型变送器。七十年代,一种用电容式变换元件做敏感元件的变送器一1151系列电容式变送器,以 Transmitter is the direct contact with the measured medium on-site instruments, often in high temperature, low temperature, corrosion, vibration, shock and other environmental work. As the process of large-scale, complex and computer applications, the accuracy of the instrumentation, stability, reliability put forward higher requirements. Faced with this situation, all countries in the world are competing to develop new transmitters. Seventies, a capacitive conversion element to do the sensing element of a 1151 series of capacitive transmitters to