Skip to content
Please enter a keyword to search

  • UNI EN ISO 15971 : 2014

    Current The latest, up-to-date edition.

    NATURAL GAS - MEASUREMENT OF PROPERTIES - CALORIFIC VALUE AND WOBBE INDEX

    Available format(s): 

    Language(s): 

    Published date:  23-04-2014

    Publisher:  Ente Nazionale Italiano di Unificazione (UNI)

    Sorry this product is not available in your region.

    Add To Cart

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

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Principles of measurement
    5 Performance assessment and acceptance tests
    6 Sampling and installation guidelines
    7 Calibration
    8 Verification
    9 Maintenance
    10 Quality control
    Annex A (normative) - Symbols and units
    Annex B (informative) - Examples of type-approval and
            technical specifications
    Annex C (informative) - Class 0 mass-basis calorimetry
    Annex D (informative) - Direct combustion calorimetry
    Annex E (informative) - Stoichiometric combustion devices
    Annex F (informative) - Effect of non-alkane gases on
            stoichiometric combustion devices
    Annex G (informative) - Measurement of Wobbe index
    Bibliography

    Abstract - (Show below) - (Hide below)

    Specifies the measurement of calorific value of natural gas and natural gas substitutes by non-separative methods, i.e. methods that do not involve the determination of the gas composition nor calculation from it.

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

    Document Type Standard
    Publisher Ente Nazionale Italiano di Unificazione (UNI)
    Status Current

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

    ISO 10715:1997 Natural gas — Sampling guidelines
    IEC 61000-6-4:2006+AMD1:2010 CSV ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 6-4: GENERIC STANDARDS - EMISSION STANDARD FOR INDUSTRIAL ENVIRONMENTS
    ISO 6976:2016 Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition
    ISO/IEC Guide 98:1993 Guide to the expression of uncertainty in measurement (GUM)
    IEC 61000-6-1 : 3.0 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 6-1: GENERIC STANDARDS - IMMUNITY STANDARD FOR RESIDENTIAL, COMMERCIAL AND LIGHT-INDUSTRIAL ENVIRONMENTS
    ISO 5725-6:1994 Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy values
    IEC 61000-6-3:2006+AMD1:2010 CSV Electromagnetic compatibility (EMC) - Part 6-3: Generic standards - Emission standard for residential, commercial and light-industrial environments
    ISO 14532:2014 Natural gas — Vocabulary
    ISO 13443:1996 Natural gas Standard reference conditions
    ISO 6142:2001 Gas analysis Preparation of calibration gas mixtures Gravimetric method
    ISO 14111:1997 Natural gas — Guidelines to traceability in analysis
    ISO 6145-1:2003 Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 1: Methods of calibration
    IEC 61000-6-2 : 3.0:2016 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 6-2: GENERIC STANDARDS - IMMUNITY STANDARD FOR INDUSTRIAL ENVIRONMENTS
    View more information

    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective