Uncertainty Analysis of Center-of-Mass Measurement Methods for the Mass Standard

ZHONG Ruilin; WU Di; WANG Jian; CAI Changqing; CHEN Hanghang; HU Manhong; JIAO Kai; DING Jing’an

doi:10.12338/j.issn.2096-9015.2020.9016

Volume 65 Issue 5

Jun. 2021

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ZHONG Ruilin, WU Di, WANG Jian, CAI Changqing, CHEN Hanghang, HU Manhong, JIAO Kai, DING Jing’an. Uncertainty Analysis of Center-of-Mass Measurement Methods for the Mass Standard[J]. Metrology Science and Technology, 2021, 65(5): 120-123, 131. doi: 10.12338/j.issn.2096-9015.2020.9016

Citation:

ZHONG Ruilin, WU Di, WANG Jian, CAI Changqing, CHEN Hanghang, HU Manhong, JIAO Kai, DING Jing’an. Uncertainty Analysis of Center-of-Mass Measurement Methods for the Mass Standard[J]. Metrology Science and Technology, 2021, 65(5): 120-123, 131. doi: 10.12338/j.issn.2096-9015.2020.9016

Citation:

ZHONG Ruilin, WU Di, WANG Jian, CAI Changqing, CHEN Hanghang, HU Manhong, JIAO Kai, DING Jing’an. Uncertainty Analysis of Center-of-Mass Measurement Methods for the Mass Standard[J]. Metrology Science and Technology, 2021, 65(5): 120-123, 131. doi: 10.12338/j.issn.2096-9015.2020.9016

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Uncertainty Analysis of Center-of-Mass Measurement Methods for the Mass Standard

doi: 10.12338/j.issn.2096-9015.2020.9016

National Institute of Metrology, Beijing 100029, China

Available Online: 2021-04-30
Publish Date: 2021-06-24

Abstract

Abstract

Highly accurate mass measurements require correction of mass differences introduced by the difference in center-of-mass height between the measured weight and the reference weight and therefore require measurement of the center-of-mass height of the mass standard. The center-of-mass height can be obtained by placing the mass standard in different positions on the weighing bridge with different orientations and calculating the change in the indicated value of the mass measurement instrument. In this paper, the uncertainty assessment of the 2 center-of-mass height measurement methods is studied, the source of each uncertainty is analyzed, the uncertainty evaluation method is given and discussed in conjunction with examples.
- mass standard,
- center of mass,
- weighing bridge,
- uncertainty,
- mass measurement

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References(12)

References

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