电动差压变送器校准方法的研究

Study on the Calibration Method of Electric Differential Pressure Transmitter

以笔者自己研发的设备对电动差压变送器使用两种常用方法进行校准,经Z值法评定,两种方法均可满足规程要求,但已达到了评定的临界预防准则。因此,对于现场使用中对精度要求较高的场合,应注意选取低压端通工作压力的校准方法。

In this paper, two commonly used methods of electric differential pressure transmitter are calibrated by the author＇s own equipment. By Z value method, two methods can meet the requirements of the regulation, but the critical precaution criterion has been achieved. Therefore, it is necessary to select the calibration method of the low pressure end pass working pressure for the situation where the precision is required in the field use.