不同检定方法对工业铂热电阻检定结果贡献的误差研究  

Research on error contributions of different verification methods of verification results of industrial platinum thermal resistance

作　　者：杨锐[1] 朱育红[1] 陈桂生[1] 

机构地区：[1]中国测试技术研究院,四川成都610021

出　　处：《中国测试》2015年第2期27-29,共3页China Measurement & Test

摘　　要：采用JJG 229——2010《工业铂、铜热电阻检定规程》中被检热电阻温度测量误差的测量模型,用3个不同准确度等级的电测仪器,对检定时标准铂电阻温度计使用上级证书R*tp值和自测R*tp值检定设备对检定结果贡献的误差进行分析研究。研究结果表明:在相同测量条件下,用上级证书R*tp值时检定设备带入检定结果的误差比自测R*tp值时要小得多,而且使用的电测仪器准确度等级越低,其差别越显著。Using the measurement model of temperature measurement error of thermal resistance in JJG 229-2010 verification regulation, the authors studied and analyzed the error contributions to verification results with three different accuracy grades of electrical measuring instruments to verify the standard platinum resistance thermometer with upper higher certificate value and self testing. Results from the study show in the same measurement conditions, errors of verification results with upper higher certificate value are much smaller than using self testing value and the difference becomes more significant with the grades of electrical measurement instrument reducing.

关 键 词：工业铂热电阻 检定 标准铂电阻 电测仪器 水三相点 误差 

分 类 号：TH811[机械工程—仪器科学与技术]