间隙密封被动活塞式气体流量标准装置量值溯源方法

doi:10.3969/j.issn.1000-1158.2024.05.12

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Abstract In the low gas flow measurement area, passive gas piston prover with clearance-sealed are widely used, because it has the advantages of eazy operation, high measurement efficiency, no mercury seal, easy to carry, and has function of automatic temperature and pressure compensation. However, there is no calibration specification for passive gas piston prover with clearance-sealed in China,The reciprocating motion of the passive piston will cause pressure fluctuation in the measuring pipeline.The traceability for passive gas piston prover with clearance-sealed using flow measurement method directly still has some difficulties. In this situation, a new traceability method for calibration passive gas piston prover with clearance-sealed by geometry measurement method is detailed described, the uncertainty of the geometry measurement method is also evaluated, and comparison with relevant foreign institution is performed for uncertainty verification.The test results show that the passive gas piston prover with clearance-sealed can be calibrated by geometry measurement method perfectly.

Key words： flow measurement gas flow standard device clearance-sealed passive piston traceability

Received: 27 June 2023 Published: 23 May 2024

PACS:

TB937

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	Articles by authors
	CHEN Chao
	SONG Jin
	ZHU Biyu

Cite this article:

CHEN Chao,SONG Jin,ZHU Biyu. flow measurement;gas flow standard device;clearance-sealed;passive piston;traceability[J]. Acta Metrologica Sinica, 2024, 45(5): 692-697.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2024.05.12 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2024/V45/I5/692

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