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EN 12405-2:2012

Current
Current

The latest, up-to-date edition.

Gas meters - Conversion devices - Part 2: Energy conversion
Published date

25-07-2012

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Principles of energy determination
5 Rated operating conditions
6 Construction requirements
7 Installation requirements
8 Metrological requirements
9 Tests of conformity
10 Marking
11 Installation and operating instructions
Annex A (normative) - Type test of the energy
        calculator (EC)
Annex B (normative) - Type test of the calorific
        value determination device (CVDD)
Annex C (normative) - Type approval tests of
        volume conversion device (VCD)
Annex D (normative) - Compatibility test for
        the set of VCD + CVDD + EC
Annex E (normative) - Type approval test
        of the VCD/EC
Annex F (normative) - Type approval test
        of the EC/CVDD
Annex G (normative) - Type approval test
        of the VCD/EC/CVDD
Annex H (normative) - Environmental influences
        (test procedures)
Annex I (normative) - Testing of the data
        transmission interface of ECD
Bibliography

This European Standard specifies the requirements and tests for the construction, performance, safety and conformity of conversion devices used to determine the energy of fuel gases described in the Table 1, including those of the 1st and 2nd families according to EN 437.The energy conversion device (ECD) considered in this standard consists of an energy calculator (EC) and is associated with the following devices and/or functions:-a volume conversion device (VCD) or a flow computer used as gas meter conversion, either conforming to EN 12405-1, or to prEN 12405-3, for high accuracy measurements;-a calorific value determination device (CVDD). Requirements for type approval tests of the devices, not included in the above-mentioned standards are described in appropriate annexes specified in Table 6.For the purpose of this European Standard, the term "volume conversion devices" (VCDs) includes flow computers (FCs).A single calculator may undertake the volume conversion functions for different metering lines.

Committee
CEN/TC 237
DevelopmentNote
Supersedes PREN 12405-2. (08/2012)
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

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DIN EN 12405-3 E : 2016 GAS METERS - CONVERSION DEVICES - PART 3: FLOW COMPUTER
UNE-EN 1776:2017 Gas infrastructure - Gas measuring systems - Functional requirements
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EN 16314:2013 Gas meters - Additional functionalities
UNE-EN 16314:2014 Gas meters - Additional functionalities
DIN EN 16314:2013-09 GAS METERS - ADDITIONAL FUNCTIONALITIES
UNI EN 16314 : 2013 GAS METERS - ADDITIONAL FUNCTIONALITIES
EN 12405-3 : 2015 GAS METERS - CONVERSION DEVICES - PART 3: FLOW COMPUTER

EN 60654-2:1997 Operating conditions for industrial-process measurement and control equipment - Part 2: Power
EN 60068-3-1:2011 Environmental testing - Part 3-1: Supporting documentation and guidance - Cold and dry heat tests
EN 61000-6-1:2007 Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity for residential, commercial and light-industrial environments
EN 12405-1:2005+A2:2010 Gas meters - Conversion devices - Part 1: Volume conversion
EN ISO 13443:2005 Natural gas - Standard reference conditions (ISO 13443:1996 including Corrigendum 1:1997)
EN 61000-4-1:2007 Electromagnetic compatibility (EMC) - Part 4-1: Testing and measurement techniques - Overview of IEC 61000-4 series
ISO 6976:2016 Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition
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EN 61000-4-11:2004/A1:2017 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-11: TESTING AND MEASUREMENT TECHNIQUES - VOLTAGE DIPS, SHORT INTERRUPTIONS AND VOLTAGE VARIATIONS IMMUNITY TESTS (IEC 61000-4-11:2004/A1:2017)
EN 60068-2-1:2007 Environmental testing - Part 2-1: Tests - Test A: Cold
EN 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
EN 60950-1:2006/A2:2013 INFORMATION TECHNOLOGY EQUIPMENT - SAFETY - PART 1: GENERAL REQUIREMENTS (IEC 60950-1:2005/A2:2013, MODIFIED)
EN 60068-2-64:2008 ENVIRONMENTAL TESTING - PART 2-64: TESTS - TEST FH: VIBRATION, BROADBAND RANDOM AND GUIDANCE
ISO 12213-3:2006 Natural gas Calculation of compression factor Part 3: Calculation using physical properties
EN 61000-4-2:2009 Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test
EN 60068-3-8:2003 Environmental testing - Part 3-8: Supporting documentation and guidance - Selecting amongst vibration tests
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/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
ISO 6143:2001 Gas analysis — Comparison methods for determining and checking the composition of calibration gas mixtures
EN 61000-2-2:2002/A1:2017 ELECTROMAGNETIC COMPATIBILITY (EMC) - ENVIRONMENT - COMPATIBILITY LEVELS FOR LOW-FREQUENCY CONDUCTED DISTURBANCES AND SIGNALLING IN PUBLIC LOW-VOLTAGE POWER SUPPLY SYSTEMS (IEC 61000-2-2:2002/A1:2017)
EN 437:2003+A1:2009 Test gases - Test pressures - Appliance categories
EN 61000-6-2:2005/corrigendum:2005 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 6-2: GENERIC STANDARDS - IMMUNITY FOR INDUSTRIAL ENVIRONMENTS (IEC 61000-6-2:2005)
EN 61000-4-8:2010 Electromagnetic compatibility (EMC) - Part 4-8: Testing and measurement techniques - Power frequency magnetic field immunity test
ISO 13443:1996 Natural gas Standard reference conditions
EN ISO 12213-3:2009 Natural gas - Calculation of compression factor - Part 3: Calculation using physical properties (ISO 12213-3:2006)
ISO 6142:2001 Gas analysis Preparation of calibration gas mixtures Gravimetric method
EN ISO 6974-1:2012/AC:2012 NATURAL GAS - DETERMINATION OF COMPOSITION AND ASSOCIATED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 1: GENERAL GUIDELINES AND CALCULATION OF COMPOSITION (ISO 6974-1:2012/COR 1:2012)
IEC TR 61000-2-1:1990 Electromagnetic compatibility (EMC) - Part 2: Environment - Section 1: Description of the environment - Electromagnetic environment for low-frequency conducted disturbances and signalling in public power supply systems
PREN 12405-3 : DRAFT 2013 GAS METERS - CONVERSION DEVICES - PART 3: FLOW COMPUTER
ENV 13005 : DRAFT 1999 GUIDE TO THE EXPRESSION OF UNCERTAINTY IN MEASUREMENT
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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)
EN 60068-3-4:2002 Environmental testing - Part 3-4: Supporting documentation and guidance - Damp heat tests
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 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 ISO 12213-2:2009 Natural gas - Calculation of compression factor - Part 2: Calculation using molar-composition analysis (ISO 12213-2:2006)
EN ISO 12213-1:2009 Natural gas - Calculation of compression factor - Part 1: Introduction and guidelines (ISO 12213-1:2006)
ISO 6141:2015 Gas analysis Contents of certificates for calibration gas mixtures
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OIML R 140 : 2007 MEASURING SYSTEMS FOR GASEOUS FUEL
OIML D 31 : 2008 GENERAL REQUIREMENTS FOR SOFTWARE CONTROLLED MEASURING INSTRUMENTS
EN 61000-4-29:2000 Electromagnetic compatibility (EMC) - Part 4-29: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations on d.c. input power port immunity tests
EN 60730-1:2016 Automatic electrical controls - Part 1: General requirements
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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EN 60068-2-31:2008 ENVIRONMENTAL TESTING - PART 2-31: TESTS - TEST EC: ROUGH HANDLING SHOCKS, PRIMARILY FOR EQUIPMENT-TYPE SPECIMENS
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