RESEARCH ON MICRO-GRAM WEIGHT STANDARDS BELOW 1 mg IN NIM |
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| M. H. Hu, J. Wang, Y. Zhang, C. Q. Cai, R. L. Zhong, H. Yao, J. A. Ding |
- Abstract:
- Micro-gram weights have potential applications for the calibration of small force measurements and the sensitivity of mass comparators with high accuracy. However, the traceability of micro weights below 1 mg to the unit of SI is not identified in the OIML recommendation R111. In this paper, Micro weights made of aluminum ranging from 500 µg to 100 µg are tested with mass comparator (UMT5). The uncertainty of measurement results indicate that for 500 µg weight, the extended measurement uncertainty can be down to 3 µg. The calibration results indicate that the biggest uncertainty contribution is still from the standard weight.
- Keywords:
- microgram weights, mass comparator
- Download:
- IMEKO-WC-2012-TC3-O4.pdf
- DOI:
- -
- Event details
- Event name:
- XX IMEKO World Congress
- Title:
Metrology for Green Growth
- Place:
- Busan, REPUBLIC of KOREA
- Time:
- 09 September 2012 - 12 September 2012