A类标准不确定度的评定方法及示例
首发时间:2020-06-23
摘要:本文介绍了检定工作中检定结果A类标准不确定度的评定方法及一些应用中的问题。介绍了合并实验标准差的概念与计算方法,检定工作中单次检定值实验标准差的获取方法以及A 类标准不确定度的评定,并且以绝缘电阻表为例进行了标准不确定度评定,分别计算了算术平均值和单次检定值试验标准差作为重复性引入的标准不确定度分量。
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Evaluation methods and examples of Class A standard uncertainty
Abstract:This article introduces the evaluation method of the A-level standard uncertainty of the verification results and some application problems in the verification work. Introduced the concept and calculation method of the combined experimental standard deviation, the method of obtaining the single standard value experimental standard deviation in the verification work and the evaluation of the class A standard uncertainty, and the standard uncertainty evaluation was carried out with the insulation resistance meter as an example. The arithmetic mean and single test value test standard deviation were calculated as standard uncertainty components introduced by repeatability.
Keywords: Metrological verification uncertainty class A assessment assessment method
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