直流数字式电位差计的校准方法探讨  

Discussion on the calibration method of DC digital potentiometers

作　　者：何晓敏 HE Xiaomin(Gansu Institute of Metrology,Lanzhou 730000,China)

机构地区：[1]甘肃省计量研究院,甘肃兰州730070

出　　处：《工业计量》2024年第2期34-35,45,共3页Industrial Metrology

摘　　要：传统直流电位差计的更新换代产品直流数字式电位差计,能够直接输出或测量直流毫伏信号和电流信号,常用于校准多种型号的变送器和热电偶等,然而,直流数字式电位差计量值溯源方法尚无可依据的国家技术规范。文章从计量特性、校准条件、校准方法等方面分析,探讨解决直流数字式电位差计的量值溯源问题。DC digital potentiometers is the updated product of traditional DC Potentiometersis.It can directly output or measure DC millivolt signals and current signals.It is often used to calibrate various models of transmitters and thermocouples.However,there is no national technical specification for the traceability method of DC digital Potentiometersis.This article analyzes the measurement characteristics,calibration conditions,calibration methods,and other aspects to explore the solution to the traceability problem of DC digital potentiometers.

关 键 词：数字式电位差计 量值溯源 示值误差 校准 

分 类 号：TM938.49[电气工程—电力电子与电力传动]