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  • BS EN ISO 6974-2:2012

    Current The latest, up-to-date edition.

    Natural gas. Determination of composition and associated uncertainty by gas chromatography Uncertainty calculations

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  31-10-2012

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Symbols
    5 Calculation of uncertainty
    Annex A (informative) - Calculation of processed component
            uncertainties for the methane-by-difference approach
    Annex B (normative) - Uncertainties of relative response
            factors
    Annex C (informative) - Alternative calculation of the
            uncertainty of the value of the unknown
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines the process required to determine the uncertainty associated with the mole fraction for each component from a natural gas analysis in accordance with ISO 6974-1.

    Scope - (Show below) - (Hide below)

    This part of ISO6974 describes the process required to determine the uncertainty associated with the mole fraction for each component from a natural gas analysis in accordance with ISO6974-1.

    General Product Information - (Show below) - (Hide below)

    Committee PTI/15
    Development Note Renumbers and supersedes BS ISO 6974-2. To be read in conjunction with BS ISO 6974-1(2000). (08/2002) 2002 Version incorporates amendment 13855 to BS ISO 6974-2. Supersedes BS 3156-11.1.1(1986) and 95/123186 DC. (11/2005) Supersedes 10/30203803 DC. (10/2012)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 8609:2014 Natural gas. Calculation of carbon dioxide emission factors from composition
    14/30287938 DC : 0 BS 8609 - NATURAL GAS - CALCULATION OF CARBON DIOXIDE EMISSION FACTORS FROM COMPOSITION

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 10715:1997 Natural gas — Sampling guidelines
    ISO 6974-6:2002 Natural gas Determination of composition with defined uncertainty by gas chromatography Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons using three capillary columns
    ISO 6974-4:2000 Natural gas — Determination of composition with defined uncertainty by gas chromatography — Part 4: Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns
    ISO 6974-3:2000 Natural gas Determination of composition with defined uncertainty by gas chromatography Part 3: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using two packed columns
    ISO Guide 35:2017 Reference materials Guidance for characterization and assessment of homogeneity and stability
    ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
    ISO 6974-1:2012 Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 1: General guidelines and calculation of composition
    ISO Guide 31:2015 Reference materials — Contents of certificates, labels and accompanying documentation
    ISO 6974-5:2014 Natural gas Determination of composition and associated uncertainty by gas chromatography Part 5: Isothermal method for nitrogen, carbon dioxide, C1 to C5 hydrocarbons and C6+ hydrocarbons
    ISO Guide 34:2009 General requirements for the competence of reference material producers
    ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
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