Verifying the Reliability of a Voltage Balance Apparatus to Measure Small Mass and Force Standards at NMIJ
Verifying the Reliability of a Voltage Balance Apparatus to Measure Small Mass and Force Standards at NMIJ
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验证 NMIJ 测量小质量和力标准的电压平衡装置的可靠性
DOI：
10.1109/tim.2021.3052020
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发表时间：
2021
影响因子：
5.6
通讯作者：
Kuramoto Naoki
中科院分区：
文献类型：
--
作者：
Fujita Kazuaki;Fujii Kenichi;Yamamoto Yasuyuki;Ota Yuichi;Kuramoto Naoki
为了精确测量小质量和力，日本国家计量研究所（NMIJ）开发了一种利用电极间静电力的电压天平。根据电气标准，该电压天平可根据修订后的千克定义进行可追溯的质量和力测量。为了确认所开发的平衡装置的可靠性，测定了2 mg金属丝砝码的质量。进行了第一次完整的不确定度分析，随后估计质量测量的相对标准不确定度为5.3 × 10-4。通过约数法以可追溯的方式相对于NMIJ的质量标准测量砝码的质量。观察到从两种不同方法获得的结果在其不确定度范围内一致。
For the accurate measurement of small masses and forces, a voltage balance that uses electrostatic force between electrodes has been developed at the National Metrology Institute of Japan (NMIJ). This voltage balance enables traceable mass and force measurements based on the revised definition of the kilogram, as per electric standards. To confirm the reliability of the developed balance apparatus, the mass of a 2 mg wire weight was determined. The first complete uncertainty analyses were performed, following which the relative standard uncertainty of the mass measurement was estimated to be 5.3 × 10-4. The mass of the weight was measured via the submultiple method in a traceable manner with respect to the mass standard at NMIJ. The results obtained from the two different methods were observed to be in agreement within their uncertainties.
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