This document (EN ISO 6974-1:2012) contains the German translation of the International draft standard ISO/FDIS 6974-1, which has been prepared by Technical Committee ISO/TC 193/SC 1 "Analysis of natural gas" (secretariat: NEN, Netherlands).
The responsible national committee is NA 062-05-73 AA "Gasanalyse und Gasbeschaffenheit" ("Gas analysis and gas quality") of the Material Testing Standards Committee (NMP).
This part of ISO 6974 gives methods for calculating component mole fractions of natural gas and specifies the data processing requirements for determining component mole fractions. This part of ISO 6974 provides for both single and multiple operation methods and either multi-point calibration or a performance evaluation of the analyser followed by single-point calibration. This part of ISO 6974 gives procedures for the calculation of the raw and processed (for example, normalized) mole fractions, and their associated uncertainties, for all components. The procedures given in this part of ISO 6974 are applicable to the handling of data obtained from replicate or single analyses of a natural gas sample.