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EVS-EN ISO 6974-1:2012

Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 1: General guidelines and calculation of composition (ISO 6974-1:2012)

Üldinfo
Kehtiv alates 05.06.2012
Alusdokumendid
ISO 6974-1:2012; EN ISO 6974-1:2012
Tegevusala (ICS grupid)
75.060 Maagaas
Direktiivid või määrused
puuduvad
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
04.01.2013
Parandus
05.06.2012
Põhitekst
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 (e.g. 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.
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EVS-EN ISO 6974-2:2012

Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 2: Uncertainty calculations (ISO 6974-2:2012)
Uusim versioon Kehtiv alates 05.06.2012
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EVS-EN ISO 6975:2005

Natural gas - Extended analysis - Gas-chromatographic method
Uusim versioon Kehtiv alates 06.07.2005
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EVS-EN ISO 6974-4:2002

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4: Determination of nitrogen, carbon dioxyde and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns
Uusim versioon Kehtiv alates 05.03.2002
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EVS-EN ISO 6974-3:2018

Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 3: Precision and bias (ISO 6974-3:2018)
Uusim versioon Kehtiv alates 19.12.2018