变送器关键部位的设计计算及误差分析是研制新产品过程中极重要的步骤。本文即介绍了新型气动差压、压力变送器主要设计计算和特性分析,其中包括被测变量与输出信号的关系、测量膜片的设计、单向静压保护型面的设计、环路放大倍数及其对仪表精确度的影响和温度、静压误差等。 Transmitter design and calculation of the key parts of the error analysis is an important step in the development of new products. This article introduces the new pneumatic differential pressure and pressure transmitter design and analysis of the main features, including the relationship between the measured variables and the output signal, the design of the diaphragm measurement, one-way static pressure protection design, loop amplification Multiples and their impact on the accuracy of the instrument and temperature, static pressure error.