• DIN EN ISO 6974-4 E : 2002

    Current The latest, up-to-date edition.
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    NATURAL GAS - DETERMINATION OF COMPOSITION WITH DEFINED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 4: DETERMINATION OF NITROGEN, CARBON DIOXIDE AND C[1] TO C[5] AND C[6+] HYDROCARBONS FOR A LABORATORY AND ON-LINE MEASURING SYSTEM USING TWO COLUMNS

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2002

    Publisher:  German Institute for Standardisation (Deutsches Institut für Normung)

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

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Principle
    4 Materials
    5 Apparatus
    6 Procedure
      6.1 Gas chromatographic operating conditions
      6.2 Performance requirements - Peak resolution
      6.3 Determination - Outline of the analysis
    7 Expression of results
      7.1 Calculation
      7.2 Precision and accuracy
    8 Test report
    Annex A (informative) Procedure for setting valve timings
                          and restriction setting
    Annex B (informative) Final time settings
    Annex C (informative) Typical precision values
    Bibliography

    Abstract - (Show below) - (Hide below)

    Describes a gas chromatographic method for the quantitative determination of natural gas constituents using a two-column system.

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

    Development Note To be used in conjunction with DIN ISO 6974-1 E and DIN ISO 6974-2 E. (12/2002)
    Document Type Standard
    Publisher German Institute for Standardisation (Deutsches Institut für Normung)
    Status Current

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

    ISO 6976:2016 Natural gas Calculation of calorific values, density, relative density and Wobbe indices from composition
    ISO 6974-2:2012 Natural gas Determination of composition and associated uncertainty by gas chromatography Part 2: Uncertainty calculations
    ISO 10723:2012 Natural gas Performance evaluation for analytical systems
    ISO 6143:2001 Gas analysis — Comparison methods for determining and checking the composition of calibration gas mixtures
    ISO 6142:2001 Gas analysis Preparation of calibration gas mixtures Gravimetric method
    DIN EN ISO 6974-1 E : 2012 NATURAL GAS - DETERMINATION OF COMPOSITION AND ASSOCIATED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 1: GENERAL GUIDELINES AND CALCULATION OF COMPOSITION (ISO 6974-1:2012)
    ISO 7504:2015 Gas analysis Vocabulary
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