工业铂热电阻不同检定方法检定结果可信度研究

Study on credibility of industrial platinum resistance measurement results of different verification methods

根据JJG 229——2010《工业铂、铜热电阻》规定的技术条件,在标准铂电阻温度计R*tp采用自测值和直接引用上级证书值时,对使用3个不同等级电测仪器的测量结果进行评定。评定数据结果表明:在相同测量条件下,自测R*tp值检定结果的不确定度比用上级证书R*tp值的检定结果不确定度大30%~100%,自测R*tp值并没有减小检定结果不确定度。

Based on the technical conditions prescribed verification regulation JJG 229——2010,in standard platinum resistance thermometer R*tpuse self-test values and direct reference to the higher certificate, the use of three different levels of electrical measuring instrument measurements were evaluated. Assessment results can be seen from the data: under the same measurement conditions,uncertainty in self-test test R*tpvalues much higher than the test results with a certificate R*tpvalue uncertainty,self-test R*tpvalue does not decrease test uncertainty.