Acta Metrologica Sinica  2016, Vol. 37 Issue (6): 615-618    DOI: 10.3969/j.issn.1000-1158.2016.06.14
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A Method for Measurement of the Inner Volume of Bell Prover
LIU Yi-ping1,SONG Jin1,XU Yao1,QUAN Xiao-jun2
1.Shanghai Institute of Measurement and Testing Technology, Shanghai 201203, China
2.Shanghai Jiao Tong University, Shanghai 200240, China
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Abstract  The inner volume of a 1000L bell prover is measured by a new facility. A chord length measuring element is made up of two length gauges and a rotating arm. The whole volume of the bell is measured off 256 cross sections with axially equal spacing, and the spatial coordinates of the points, at which length gauges contact the bell’s inner wall,are obtained with a sampling interval of 15° to reproduce every section profile. A new sweep method is introduced to calculate the areas of section profiles. The comparison with the method for the assessment of departure from roundness shows that the results of the two methods coincide with each other when small sampling interval is adopted. A data sheet for all element volumes along bell axial is presented as calibration result.
Key wordsmetrology      volumetric calibration      gas flowmeter      geometry measurement      bell prover     
Received: 15 November 2014      Published: 14 October 2016
PACS:  TB937  
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LIU Yi-ping
SONG Jin
XU Yao1
QUAN Xiao-jun
Cite this article:   
LIU Yi-ping,SONG Jin,XU Yao1, et al. A Method for Measurement of the Inner Volume of Bell Prover[J]. Acta Metrologica Sinica, 2016, 37(6): 615-618.
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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2016.06.14     OR     http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2016/V37/I6/615
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