• I.S. EN ISO 6145-7:2010

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC VOLUMETRIC METHODS - PART 7: THERMAL MASS-FLOW CONTROLLERS

    Available format(s):  Hardcopy, PDF

    Superseded date:  26-01-2019

    Language(s):  English

    Published date:  01-01-2010

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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

    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Principle
    5 Set-up
    6 Preparation of gas mixtures
    7 Calculations
    Annex A (informative) - Pre-mixed gases for preparation
            of mixtures of high dilution
    Annex B (informative) - Practical hints
    Annex C (informative) - Calculation of uncertainties
    Bibliography

    Abstract - (Show below) - (Hide below)

    Describes a method for continuous production of calibration gas mixtures, containing two or more components, from pure gases or other gas mixtures by use of commercially available thermal mass-flow controllers.

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

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Superseded
    Superseded By

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

    ISO 14511:2001 Measurement of fluid flow in closed conduits Thermal mass flowmeters
    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
    ISO 7504:2015 Gas analysis Vocabulary
    ISO 6145-1:2003 Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 1: Methods of calibration
    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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