间接标准电流源法校准数字式静电计直流电流的测量不确定度评定  

Evaluation of Measurement Uncertainty of DC Current of Digital Electrometers by Indirect Standard Current Source Method

作　　者：魏天舒 WEI Tian-shu(Liaoning Provincial Institute of Measurement,Shenyang 110004,China)

机构地区：[1]辽宁省计量科学研究院,辽宁沈阳110004

出　　处：《品牌与标准化》2020年第3期16-19,共4页

摘　　要：间接标准电流源法作为JJF 1726-2018《数字式静电计校准规范》中直流电流的校准方法。当直流标准电流源无法满足校准需求时,常用的该校准方法校准直流微弱电流。本文介绍了间接标准电流源法校准数字式静电计直流电流的测量不确定度评定方法与评定实例,为评定数字式静电计直流电流的测量不确定度提供参考。The indirect standard current source method is used as the calibration method of DC current in JJF 1726-2018 Calibration Specification for Digital Electrometers.When the DC standard current source cannot meet the calibration requirements,this calibration method is used to calibrate the weak DC current.This paper introduces the measurement uncertainty evaluation method and evaluation example of indirect standard current source method for calibrating DC current of digital electrometers,which provides a reference for evaluating the measurement uncertainty of the DC current of digital electrometers.

关 键 词：直流电流 间接标准电流源 不确定度评定 

分 类 号：TM933.1[电气工程—电力电子与电力传动]