论天然气组成分析的溯源性

A Review on the Traceability for Natural Gas Composition Analysis

通过与计量学通用的溯源性准则相对比,并参照国际标准ISO14111、ISO10723、ISO6142和ISO6143的有关规定,阐明了天然气分析测试溯源性的基本原理、溯源链结构、标准气混合物(RGM)的分级、RGM及标准方法的应用和不确定度评定与溯源性的关系等问题。同时指出,为使天然气能量计量在我国能顺利推广,必须尽快发布与之配套的天然气分析(专用的)溯源准则、天然气在线分析系统操作性能评价和天然气分析(专用的)RGM制备方法等有关国家标准;并解决建立完善溯源链急需的高准确度RGM研制及其(量值)溯源问题。

Comparing with the metrological traceability guide and referring to International Standards ISO 14111,ISO 10723,ISO 6142 and ISO 6143,the principle,structure of traceability chain,classification of reference gas mixture(RGM),utilization of RGM and evaluation of uncertainty are discussed in this article.For popularizing energy determination of natural gas in our country,the relative national standards for traceability of natural gas analysis should be established and RGM of high accuracy in traceability chain structure should be prepared.