质量基准量值传递过程中空气浮力影响的研究

摘要

The CIPM-1981 formula,the CIPM-81/91 formula and the CIPM-2007 formula are used to calculate the air buoyancy correction during the dissemination of mass primary standard respectively,there are some differences among these results.In order to analyze the influence of three formulas on the air buoyancy correction,the calculation results of air buoyancy correction is compared under different conditions.The results show that the maximum difference is 42 μg under different environmental conditions,when the volumes of national kilogram primary standard No.60 and national kilogram secondary standard No.121 have known.%CIPM-1981,CIPM-81/91和CIPM-2007公式在质量测量过程中,计算空气浮力修正影响量存在着明显的差异.为了分析3个公式对质量基准量值传递过程中空气浮力的影响,在不同条件下对使用3个公式计算空气浮力修正进行比较.结果表明:基于国家千克基准60号和国家千克副基准121号的体积参数,在不同环境条件下采用CIPM-1981、CIPM-81/91和CIPM-2007公式进行空气浮力修正过程中,质量差值最大可达42 μg.