WU, Shuqing
(National Institute of Metrology, China)
,
FENG, Jinyang
(National Institute of Metrology, China)
,
LI, Chunjian
(National Institute of Metrology, China)
,
SU, Duowu
(National Institute of Metrology, China)
,
WANG, Qiyu
(National Institute of Metrology, China)
,
HU, Ruo
(National Institute of Metrology, China)
,
HU, Lishuang
(National Institute of Metrology, China)
,
XU, Jinyi
(National Institute of Metrology, China)
,
JI, Wangxi
(National Institute of Metrology, China)
,
Ullrich, Christian
(Federal Office of Metrology and Surveying and Surveying (BEV), Austria)
,
Pálinkáš, Vojtech
(VÚ)
,
Kostelecký, Jakub
(GTK)
,
Bilker-Koivula, Mirjam
(, Czech Republic)
,
Näränen, Jyri
(VÚ)
,
Merlet, Sébastien
(GTK)
,
Moigne, Nicolas Le
(, Czech Republic)
,
Mizushima, Shigeki
(Finnish Geospatial Research Institute (FGI), National Land Survey of Finland, Finland)
,
Francis, Olivier
(Finnish Geospatial Research Institute (FGI), National Land Survey of Finland, Finland)
,
Choi, In-Mook
(LNE-SYRTE - Gé)
,
Kim, Min-Seok
(osciences Montpellier, France)
,
Alotaibi, Homood M
(LNE-SYRTE - Gé)
,
Aljuwayr, Ahmed
(osciences Montpellier, France)
,
Baumann, Henri
(National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology (NMIJ)
,
Priruenrom, Tasanee
(Universit)
,
Woradet, Nattanan
,
KIRBAŞ, Cafer
,
Coşkun, İlkcan
,
Newel, David
The CCM.G-K2.2017 comparison was organised for the purpose of determination of the degree of equivalence of the national standards for free-fall acceleration measurement. The comparison was held in the Changping Campus of National Institute of Metrology China (NIM), from October to November in 2017....
The CCM.G-K2.2017 comparison was organised for the purpose of determination of the degree of equivalence of the national standards for free-fall acceleration measurement. The comparison was held in the Changping Campus of National Institute of Metrology China (NIM), from October to November in 2017. This is the first time that such a comparison is organized outside of the Europe continent and establishes a new global comparison sites in China. This comparison is also the largest ever organized with the participation of 13 instruments. We give the list of the participants who actually performed measurements during the comparison, the data (raw absolute gravity measurements and their uncertainties) submitted by the participants as well as the results of the vertical gravity gradient at the comparison sites. The measurement strategy is briefly discussed and the data elaboration is presented. Finally, the results of the data adjustment are presented including the degrees of equivalence (DoE) of the absolute gravimeters and the key comparison reference values (KCRVs). Overall, the measurements of KC instruments are all consistent given the declared uncertainties. Main text To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the CCM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
The CCM.G-K2.2017 comparison was organised for the purpose of determination of the degree of equivalence of the national standards for free-fall acceleration measurement. The comparison was held in the Changping Campus of National Institute of Metrology China (NIM), from October to November in 2017. This is the first time that such a comparison is organized outside of the Europe continent and establishes a new global comparison sites in China. This comparison is also the largest ever organized with the participation of 13 instruments. We give the list of the participants who actually performed measurements during the comparison, the data (raw absolute gravity measurements and their uncertainties) submitted by the participants as well as the results of the vertical gravity gradient at the comparison sites. The measurement strategy is briefly discussed and the data elaboration is presented. Finally, the results of the data adjustment are presented including the degrees of equivalence (DoE) of the absolute gravimeters and the key comparison reference values (KCRVs). Overall, the measurements of KC instruments are all consistent given the declared uncertainties. Main text To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the CCM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
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