仪器仪表的内阻测量和分析  

Impedance measurement and analyses for instruments

作　　者：李祚亮[1] 王作全[1] 沈景鹏[1] 刘威伟[1] 

机构地区：[1]中国空气动力研究与发展中心校准测试实验室,四川绵阳621000

出　　处：《中国测试》2012年第2期36-38,共3页China Measurement & Test

摘　　要：仪器仪表的内阻直接关系到测量结果的准确性。针对几种典型计量仪器的特点,设计了测量内阻的方法,并对测量数据进行了详细的分析,测得的内阻值与指标一致;针对在计量检定过程中仪器内阻可能导致测量结果不准确甚至得出错误的结论,解释原因并提出了实际的解决办法。The I/O impedance of instrument is directly related to the accuracy of measurement results.According to the characteristics of several typical metrological instruments,the measurement methods of instrument impedance were designed,and measurement data were analyzed in detail.All test values of impedance accord with their specifications.In view of the inaccurate or wrong conclusion caused by instrument impedance in the verification processing,explanations and practical solutions were provided.

关 键 词：测试计量仪器 内阻 测量分析 数字多用表 多功能校准源 

分 类 号：TM932[电气工程—电力电子与电力传动] TM934.73