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  • BS EN 12405:2002

    View superseded by
    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Gas meters. Gas-volume electronic conversion devices

    Available format(s):  Hardcopy, PDF

    Superseded date:  28-06-2005

    Language(s):  English

    Published date:  24-07-2002

    Publisher:  British Standards Institution

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

    Foreword
    1 Scope
    2 Normative references
    3 Terms, definitions and symbols
        3.1 Terms and definitions
        3.2 Symbols
    4 Principle of measurement
        4.1 Conversion as a function of temperature
        4.2 Conversion as a function of pressure and
              temperature
        4.3 Conversion as a function of pressure, temperature
              and deviation from the ideal gas law
        4.4 Correction of the volume at measurement conditions
    5 Rated operating conditions
        5.1 Specified field of measurement
              5.1.1 Specified measurement range for gas
                      pressure
              5.1.2 Specified measurement range for gas
                      temperature
              5.1.3 Gas characteristics
        5.2 Environmental class
              5.2.1 Ambient temperature range
              5.2.2 Humidity range
        5.3 Power supply
    6 Construction requirements
        6.1 General
        6.2 Casings
        6.3 Indications
              6.3.1 General
              6.3.2 Electronic indicating device
        6.4 Inputs for volume conversion
        6.5 Battery powered conversion device
        6.6 Security devices and alarms
    7 Installation requirements
        7.1 General
        7.2 Temperature transducer
        7.3 Pressure transducer
    8 Performance
        8.1 Reference conditions
        8.2 Rated operating conditions
        8.3 Maximum permissible errors
              8.3.1 Error of conversion
              8.3.2 Specific errors for a gas-volume conversion
                      device, type 2
        8.4 Influence factors
        8.5 Disturbances
        8.6 Durability
    9 Tests of conformity
        9.1 Test conditions
        9.2 Tests and their classification
        9.3 Sample of gas volume conversion device required
              for testing
        9.4 Test report
    10 Marking
    Annex A (normative) Type test
        A.1 General conditions
        A.2 Accuracy tests under reference conditions
        A.3 Effect of ambient temperature
        A.4 Effect of damp heat, steady state test
        A.5 Effect of damp heat, cyclic test
        A.6 Electrical power variation
        A.7 Short time power interruption
        A.8 Electrical bursts
        A.9 Electromagnetic immunity
        A.10 Electrostatic discharges
        A.11 Effect of an overload of pressure
        A.12 Mechanical resistance to overload of pressure
        A.13 Effect of vibrations
        A.14 Effect of shocks
        A.15 Durability
    Annex B (informative) Model type test report
        B.1 General
        B.2 Accuracy tests under reference conditions
        B.3 Ambient temperature
        B.4 Effect of damp heat, steady state test
        B.5 Effect of damp heat, cyclic test
        B.6 Electrical power variation
        B.7 Short time power interruption
        B.8 Electrical bursts
        B.9 Electromagnetic immunity
        B.10 Electrostatic discharges
        B.11 Effect of an overload of static pressure
        B.12 Mechanical resistance to overload of pressure
        B.13 Effect of vibrations
        B.14 Effect of shocks
        B.15 Durability
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines the requirements and tests for the construction, performance, safety and conformity of gas-volume electronic conversion devices associated to gas meters, used to measure volumes of fuel gases of the 1st and 2nd families according to EN 437.

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

    Committee GSE/25
    Development Note Supersedes BS 4161-7(1973), BS 4161-8(1987) and 96/710176 DC. (07/2002)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

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

    EN 50160 : 2010 AMD 1 2015 VOLTAGE CHARACTERISTICS OF ELECTRICITY SUPPLIED BY PUBLIC ELECTRICITY NETWORKS
    EN 61000-4-1:2007 Electromagnetic compatibility (EMC) - Part 4-1: Testing and measurement techniques - Overview of IEC 61000-4 series
    EN 50039:1980 Electrical apparatus for potentially explosive atmospheres - Intrinsically safe electrical systems 'i'
    IEC 61000-4-4 : 3.0EN+(REDLINE+VERSION) ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-4: TESTING AND MEASUREMENT TECHNIQUES - ELECTRICAL FAST TRANSIENT/BURST IMMUNITY TEST
    IEC 61000-4-1:2006 Electromagnetic compatibility (EMC) - Part 4-1: Testing and measurement techniques - Overview of IEC 61000-4 series
    ISO 5168:2005 Measurement of fluid flow — Procedures for the evaluation of uncertainties
    EN 60068-2-1:2007 Environmental testing - Part 2-1: Tests - Test A: Cold
    EN 50020:2002 Electrical apparatus for potentially explosive atmospheres - Intrinsic safety 'i'
    EN 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
    EN 60950:2000/corrigendum:2002 SAFETY OF INFORMATION TECHNOLOGY EQUIPMENT
    EN 24006:1993 Measurement of fluid flow in closed conduits - Vocabulary and symbols (ISO 4006:1991)
    ISO 12213-3:2006 Natural gas Calculation of compression factor Part 3: Calculation using physical properties
    IEC 61000-4-4:2012 RLV Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement techniques - Electrical fast transient/burst immunity test
    EN 61000-4-2:2009 Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test
    EN 50017:1998 Electrical apparatus for potentially explosive atmospheres - Powder filling "q"
    EN 50019:2000/corrigendum Apr. 2003 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - INCREASED SAFETY "E"
    IEC 60068-2-31:2008 Environmental testing - Part 2-31: Tests - Test Ec: Rough handling shocks, primarily for equipment-type specimens
    EN 50018 : 2000 AMD 1 2002 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - FLAMEPROOF ENCLOSURE "D"
    IEC 61000-4-6 : 4.0 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-6: TESTING AND MEASUREMENT TECHNIQUES - IMMUNITY TO CONDUCTED DISTURBANCES, INDUCED BY RADIO-FREQUENCY FIELDS
    IEC 61000-4-6:2013 Electromagnetic compatibility (EMC) - Part 4-6: Testing and measurement techniques - Immunity to conducted disturbances, induced by radio-frequency fields
    EN 61000-4-3 : 2006 AMD 2 2010 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-3: TESTING AND MEASUREMENT TECHNIQUES - RADIATED, RADIO-FREQUENCY, ELECTROMAGNETIC FIELD IMMUNITY TEST
    ISO 2768:1973 Permissible machining variations in dimensions without tolerance indication
    IEC 60068-2-3:1969 Basic environmental testing procedures - Part 2-3: Tests - Test Ca: Damp heat, steady state
    EN 437:2003+A1:2009 Test gases - Test pressures - Appliance categories
    IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
    IEC 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
    IEC 61000-4-2:2008 Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test
    IEC 61000-4-3:2006+AMD1:2007+AMD2:2010 CSV Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
    EN 1359:2017 Gas meters - Diaphragm gas meters
    ISO 12213-1:2006 Natural gas Calculation of compression factor Part 1: Introduction and guidelines
    EN 61000-4-4:2012 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-4: TESTING AND MEASUREMENT TECHNIQUES - ELECTRICAL FAST TRANSIENT/BURST IMMUNITY TEST (IEC 61000-4-4:2012)
    CISPR 11:2015 RLV Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement
    IEC 60068-2-1:2007 Environmental testing - Part 2-1: Tests - Test A: Cold
    EN 61000-4-6:2014/AC:2015 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-6: TESTING AND MEASUREMENT TECHNIQUES - IMMUNITY TO CONDUCTED DISTURBANCES, INDUCED BY RADIO-FREQUENCY FIELDS (IEC 61000-4-6:2013)
    EN 50015:1998 Electrical apparatus for potentially explosive atmospheres - Oil immersion "o"
    EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
    EN 60068-2-30:2005 Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle)
    EN 50016:2002 Electrical apparatus for potentially explosive atmospheres - Pressurized apparatus "p"
    ISO 12213-2:2006 Natural gas Calculation of compression factor Part 2: Calculation using molar-composition analysis
    EN 50014:1997/A2:1999 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - GENERAL REQUIREMENTS
    ISO 4006:1991 Measurement of fluid flow in closed conduits — Vocabulary and symbols
    EN 60730-1:2016 Automatic electrical controls - Part 1: General requirements
    EN 1776:2015 Gas infrastructure - Gas measuring systems - Functional requirements
    EN 60068-2-31:2008 ENVIRONMENTAL TESTING - PART 2-31: TESTS - TEST EC: ROUGH HANDLING SHOCKS, PRIMARILY FOR EQUIPMENT-TYPE SPECIMENS
    IEC 60730-1:2013+AMD1:2015 CSV Automatic electrical controls - Part 1: General requirements
    IEC 60068-2-30:2005 Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle)
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