EN ISO 6974-1-2012 天然气.气相色谱法测定成分和相关的不确定性.第1部分:组成的一般准则和计算
Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 1: General guidelines and calculation of composition
This part of ISO 6974 gives methods for calculating component mole fractions of natural gas and specifies thedata processing requirements for determining component mole fractions.This part of ISO 6974 provides forboth single and multiple operation methods and either multi-point calibration or a performance evaluation ofthe analyser followed by single-point calibration.This part of ISO 6974 gives procedures for the calculation ofthe raw and processed (e.g. normalized) mole fractions, and their associated uncertainties, for all components.The procedures given inThis part of ISO 6974 are applicable to the handling of data obtained from replicate orsingle analyses of a natural gas sample.