煤中全水分含量测定不确定度评定

Uncertainty Evaluation of Total Moisture Content of Coal

依据JJF 1059.1-2012《测量不确定度评定与表示》、测定原理及数学模型,分析煤中全水分含量测定的标准不确定度来源,并对每个不确定分量进行评定。结果表明:煤中全水分含量测定的标准不确定度为0.129%,扩展不确定度为0.26%。不确定度值较小,测定结果精准度较高。

Based on the standard JJF1059.1-2012 "Evaluation and expression of uncertainty in measurement",measuring principle and mathematical model,the source of standard uncertainty for determination of total moisture content in coal is analyzed,and each uncertainty component is evaluated. The result shows that the standard uncertainty of total moisture is 0.129% and expanded uncertainty is 0.26%. The uncertainty value is small and the accuracy of the results is high.