对向测量皮托管的国际比对

doi:10.3969/j.issn.1000-1158.2022.08.12

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Abstract In order to verify the consistency of the calibration coefficients of S-type pitot tube, spherical 3D pitot tube and prismatic 3D pitot tube used for on-site flue flow measurement, the National Institute of Metrology(NIM) led the calibration comparison of pitot tube with the participation of National Institute of Standards and Technology(NIST) and Korea Research Institute of Standards and Science(KRISS). The results showed that the consistence of S-type pitot tube in different laboratories was relatively poor, so it was not suitable to be used as a comparison standard instrument. The results of spherical 3D pitot tube in different laboratories were more consistent than that of prism 3D pitot tube, the influence of velocity calibration coefficient difference on axial velocity is higher than that of yaw angle reference position error and pitch angle calibration coefficient difference, the difference of axial velocity caused by the yaw angle reference position error and the difference of pitch angle calibration coefficient is 0.03%~0.9%, and the difference of axial velocity caused by the difference of velocity calibration coefficient is 1.9%~12.2%.

Key words： metrology pitot tube stack flowrate calibration international comparison

Received: 04 January 2021 Published: 20 August 2022

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TB937

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	YANG Mei-zhao
	ZHANG Liang
	FANG Li-de
	WANG Chi

Cite this article:

YANG Mei-zhao,ZHANG Liang,FANG Li-de, et al. International Comparison of Pitot Tube for Nulling Method[J]. Acta Metrologica Sinica, 2022, 43(8): 1050-1057.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2022.08.12 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2022/V43/I8/1050

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