冷却镜面凝析湿度计法检测天然气水露点的不确定度评定

doi:10.3969/j.issn.1000-1158.2019.6A.032

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Abstract The uncertainty analysis of dew point measurement of natural gas based on cooling mirror condensation hygrometer was carried out. The source of uncertainty was analyzed in detail by establishing mathematical model. The uncertainty components and synthetic uncertainty introduced in the process were evaluated. The results showed that the expanded uncertainty is 0.8℃ when the factor k=2 and the confidence probability is 95%. This method has the characteristics of fast measurement speed and high accuracy. It is suggested that the accuracy and reliability of the measurement results be further improved by increasing the number of tests and improving the proficiency of the inspectors.

Key words： metrology cooling mirror condensation humidity method dew point uncertainty

Received: 10 August 2019

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TB99

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	ZOU Wei

Cite this article:

ZOU Wei. Evaluation of Uncertainty in Detecting Dew Point of Natural Gas by Cooling Mirror Condensation Hygrometer[J]. Acta Metrologica Sinica, 2019, 40(6A): 150-153.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2019.6A.032 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2019/V40/I6A/150

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