氧气透过率标准物质测试数据的统计OA

In order to analyze the variation of the deviation between the measurement results of gas transmission rate and the reference value,and to provide precision data support for the determination of relevant measurement technical specifications,the gas permeability tester with different pressure difference methods was used to repeatedly measure the national certified reference materials with different standard values of gas transmission rate,and then the variation of relative error and repeatability with the reference value of standard materials was analyzed.The results show that the relative error and repeatability dispersion of the standard material measurement results with large standard values were small.When determining the measurement characteristic index of the gas transmission rate tester,it was recommended to set differentiated technical requirements for different value intervals.