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    ONORM EN 12405-1 : 2011

    GAS METERS - CONVERSION DEVICES - PART 1: VOLUME CONVERSION

    Osterreichisches Normungsinstitut/Austrian Standards

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    ONORM EN 14236 : 2008

    ULTRASONIC DOMESTIC GAS METERS

    Osterreichisches Normungsinstitut/Austrian Standards

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    ONORM EN 437 : 2009

    TEST GASES - TEST PRESSURES - APPLIANCE CATEGORIES

    Osterreichisches Normungsinstitut/Austrian Standards

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    ONORM CEN/TS 15399 : 2007

    GAS SUPPLY SYSTEMS - GUIDELINES FOR MANAGEMENT SYSTEMS FOR GAS DISTRIBUTION NETWORK

    Osterreichisches Normungsinstitut/Austrian Standards

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    ONORM EN 12480 : 2018

    GAS METERS - ROTARY DISPLACEMENT GAS METERS

    Osterreichisches Normungsinstitut/Austrian Standards

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    ÖNORM EN 12405-1:2019

    Gas meters - Conversion devices - Part 1: Volume conversion

    Osterreichisches Normungsinstitut/Austrian Standards

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    ÖNORM EN 14236: 2019

    Ultrasonic domestic gas meters

    Osterreichisches Normungsinstitut/Austrian Standards

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    ÖNORM EN 15399: 2019 04 15

    Gas infrastructure — Safety Management System for Gas Networks with maximum operting pressure up to and including 16 bar

    Osterreichisches Normungsinstitut/Austrian Standards

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    ÖNORM EN 437 : 2019 05 15

    Test gases — Test pressures — Appliance categories

    Osterreichisches Normungsinstitut/Austrian Standards