Evaluation of an automated mass comparator performance for mass calibration of sub-milligram weights
Evaluation of an automated mass comparator performance for mass calibration of sub-milligram weights
复制标题
评估用于亚毫克砝码质量校准的自动质量比较器性能
DOI：
10.1016/j.measurement.2020.108841
复制
发表时间：
2021
期刊：
影响因子：
5.6
通讯作者：
Kuramoto N.
中科院分区：
文献类型：
--
作者：
Ota Y.;Ueki M.;Kuramoto N.
亚毫克质量标准对于确保小质量测量的可靠性非常重要。日本国家计量研究所开发了一种质量比较器，能够准确地运输和称量毫克以下的重量。该装置可以处理各种形状的重物，例如金属丝重物、薄片重物和圆盘重物。使用所开发的装置进行从1 mg到0.1 mg的线重量和片重量的称重测试。通过比较被测砝码与参考砝码，实现了标称质量为0.1mg砝码的质量校准，标准不确定度为0.075 μg。本文介绍了所研制的质量比较仪的详细情况、用该仪器测得的砝码称量值的标准偏差以及亚毫克砝码质量校准的不确定度。
Sub-milligram mass standards are important to ensure the reliability of small mass measurements. A mass comparator capable of accurately transporting and weighing sub-milligram weights was developed at the National Metrology Institute of Japan. This apparatus can handle weights of various shapes such as wire weight, sheet weight, and disk weight. The weighing tests of wire weights and sheet weights ranging from 1 mg to 0.1 mg were performed using the developed apparatus. The mass calibration of weight with a nominal mass of 0.1 mg was realized with a standard uncertainty of 0.075 μg by comparing the test weight and the reference weight. This paper describes the details of the developed mass comparator, the standard deviation of the weighing value of the weight obtained using this apparatus, and the uncertainty of mass calibration of sub-milligram weights.