Acta Metrologica Sinica  2017, Vol. 38 Issue (1): 127-128    DOI: 10.3969/j.issn.1000-1158.2017.01.27
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The Comparison of Absolute Gravimeters CCM.G-K2 and NIM-3A Absolute Gravimeter
WU Shu-qing,LI Chun-Jian,XU Jin-yi,SU Duo-wu,FENF Jin-yang,JI Wang-xi
National Institute of Metrology, Beijing 100029, China
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Abstract  Based on laser interference technology and free-fall theory, the National Institute of Metrology (China) has developed the latest NIM-3A type absolute gravimeter.This instrument has participated in the 9th international comparison of absolute gravimetries CCM.G-K2,according to the published result of CCM.G-K2,the NIM-3A type absolute gravimeter with the combined standard uncertainty of 5.3 μGal is agreed with the key comparison reference value and the degree of equivalence is gained.
Key wordsmetrology      absolute gravimeter      international comparison      uncertainty     
Received: 17 July 2015      Published: 28 December 2016
PACS:  TB93  
Corresponding Authors: Shu-Qing WU     E-mail: wushuqing828@163.com
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WU Shu-qing
LI Chun-Jian
XU Jin-yi
SU Duo-wu
FENF Jin-yang
JI Wang-xi
Cite this article:   
WU Shu-qing,LI Chun-Jian,XU Jin-yi, et al. The Comparison of Absolute Gravimeters CCM.G-K2 and NIM-3A Absolute Gravimeter[J]. Acta Metrologica Sinica, 2017, 38(1): 127-128.
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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2017.01.27     OR     http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2017/V38/I1/127
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