肺功能仪用定标筒容量校准方法

doi:10.3969/j.issn.1000-1158.2023.01.04

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Abstract A volume calibration method of spirometer syringes (hereinafter referred to as syringes) based on hydro-weighting method and combined with negative pressure principle is presented, and a calibration device for the volume of syringes is designed. During calibration, the medium (pure water) is pumped into the weighing cylinder by the negative pressure formed in syringes when the piston of syringes is pulled out. From the collected data such as ambient atmospheric pressure, medium mass and temperature, the capacity of syringes is calculated at 20°C. The volume measurement model is developed according to the volume measurement principle of syringes. The measured volume of a syringe is 3.00196L, and the uncertainty of measurement result is 9.6×10^-4 (k=2). The research shows that the device meets the requirements of syringes capacity calibration and can realize rapid calibration.

Key words： metrology volume calibration methods spirometer syringe hydro-weighting method negative pressure principle uncertainty

Received: 12 July 2022 Published: 13 January 2023

PACS:

TB938.3

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	Articles by authors
	REN Li-tai
	GUO Li-gong
	BAO Fu-bing
	WANG Jin-tao
	BAO Xue-song

Cite this article:

REN Li-tai,GUO Li-gong,BAO Fu-bing, et al. Method for Volume Calibration of Spirometer Syringes[J]. Acta Metrologica Sinica, 2023, 44(1): 21-25.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2023.01.04 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2023/V44/I1/21

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