石油与天然气化工2023，Vol.52Issue(6)：104-109,6.DOI:10.3969/j.issn.1007-3426.2023.06.016
采用GB/T 17283测定水露点结果的精密度研究
Study on the precision of water dew point measurement results by GB/T 17283
摘要
Abstract
Objective GB/T 17283-2014 is an important test method for measuring the dew point in natural gas and similar gases.At present,the standard does not stipulate the precision of the measurement results.This study determines the precision index of the dew point results,which provides the consistency evaluation basis for the users of the standard,and also can provide technical reference for revising the standard.Methods Using eight dew point instruments with different instrument manufacturers and models,the precision test is carried out through testing water-gas standard substance dew points under different pressure.Referring to the repeatability standard deviation of the determination results provided by the Russian standard GOST 20060-2021 Determination of water dew point temperature of natural gas,the precision index of the results of water dew point measured by cooling mirror condensate hygrometer was studied and determined.Results The limits of repeatability and reproducibility of measurement results are specified according to the measurement range of water dew point.The water dew point is-40.0℃≤tB≤-30.0℃,the limit of repeatability is≤2.0℃,and the limit of reproducibility is≤3.0℃.The dew point of water is-30.0℃<tB≤0℃,the limit of repeatability is≤1.5℃,and the limit of reproducibility is≤2.5℃.The water dew point is 0℃<tB≤10.0℃,the repeatability limit is≤1.0℃,and the reproducibility limit is≤2.0℃.Conclusions In order to increase the practicability and operability of GB/T 17283,it is suggested that the standard should increase the precision requirement of water dew point measurement results,and the precision index proposed in this paper can be used as a technical reference for revising the standard.关键词
GB/T 17283/水露点/精密度/重复性限/再现性限/标准偏差Key words
GB/T 17283/water dew point/precision/repeatability limit/reproducibility limit/standard deviation引用本文复制引用
曾文平,敬豪,姜琛,何斌,徐冲,高金锁,王博玮..采用GB/T 17283测定水露点结果的精密度研究[J].石油与天然气化工,2023,52(6):104-109,6.基金项目
2022 年中国石油西南油气田公司科技项目"天然气水露点在线分析仪性能评价技术及应用研究"(20230308-04) （20230308-04）
