差阻式读数仪电阻比校准方法的研究  

Study on calibration method of resistance ratio for differential resistor reading instrument

作　　者：何浩鹏[1,2] 张鑫 HE Haopeng;ZHANG Xin(Key Laboratory of Earthquake Geodesy,Institute of Seismology,CEA,Wuhan 430071,China;Wuhan Seismic Metrological Verification&Suveying Engineering Institue Co.,LTD,Wuhan 430071,China)

机构地区：[1]中国地震局地震研究所(中国地震局地震大地测量重点实验室),湖北武汉430071 [2]武汉地震计量检定与测量工程研究院有限公司,湖北武汉430071

出　　处：《工业计量》2024年第6期14-18,共5页Industrial Metrology

摘　　要：针对目前测量方法不能满足高准确度、全量程差阻式读数仪电阻比的校准需求,基于差值式读数仪的测量原理,提出采用直接测量法与比较测量法两种方法对电阻比示值误差进行校准,分别对两种方法进行比对验证和不确定度评定,实验表明两种方法测量结果差值的绝对值小于7×10^(-5),归一化偏差值小于1,验证了两种测量方法电阻比示值误差测量结果的一致性,均可进行电阻比示值误差的测量。The current measurement methods of resistance ratio cannot meet the calibration requirements of high accuracy and full range differential resistance reading instrument.Two methods based on the measurement principle of differential resistor reading instruments were proposed to calibrate the resistance ratio indication eror.These methods are direct measurement method and comparison measurement method.These methods were compared and verified.The uncertainties are evaluated.The result shows that the absolute value of the dfference between the measurement results of the two methods is less than 7×10^(-5),and the normalized deviation value is less than 1,which verified the consistence of these measuring methods.Both methods can be used for the measurement of the resistance ratio indication error.

关 键 词：差阻式读数仪 电阻比 校准 不确定评定 

分 类 号：TH89[机械工程—仪器科学与技术]