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SIST EN 12405:2004

(Main)

Gas meters - Gas-volume electronic conversion devices

Gas meters - Gas-volume electronic conversion devices

This European Standard specifies 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.
Only three kinds of conversion are treated in this standard:
- conversion as a function of temperature only (called T conversion);
- conversion as a function of the pressure and of the temperature with constant compressibility factor (called PT conversion);
- conversion as a function of the pressure, the temperature and taking into account the compressibility factor (called PTZ conversion).
These gas-volume conversion devices consist of a calculator and a temperature transducer or a calculator, a temperature transducer and a pressure transducer locally installed.
Any conversion device can provide an error curve correction for a gas meter.
NOTE   When rendering an account to an end user the readings from the conversion device can be used in conjunction with the readings from a gas meter conforming to EN 1359, prEN 12480, or prEN 12261, as appropriate, or to any other appropriate and relevant international or national standard for gas meters, without prejudice of national regulations.
This standard is intended for type testing only.
Annex A is normative and annex B is informative.

Gaszähler - Elektronische Zustands-Mengenumwerter

Diese Europäische Norm legt die Anforderungen an Herstellung, Leistungsumfang, Sicherheit und Konformität elektronischer, am Gaszähler angeschlossener Zustands-Mengenumwerter, die für  die Mengenmessung von Brenngasen der ersten und zweiten Gasfamilie nach EN 437 eingesetzt werden, sowie deren Prüfung fest.
Es werden nur drei Arten der Umwertung in dieser Norm behandelt:
¾ die Umwertung als reine Temperaturfunktion (T-Umwertung);
¾ die Umwertung als Funktion von Druck und Temperatur mit einem konstanten Realgasfaktor (PT-Umwertung);
¾ die Umwertung  als Funktion  von Druck, Temperatur  und Realgasfaktor (PTZ-Umwertung).
Diese Zustands-Mengenumwerter bestehen aus einem Rechner und einem Temperatur-mess-umfor-mer oder  aus einem Rechner, einem Temperaturmessumformer und einem Druckmessumformer und sind in der Messanlage installiert.
Alle Zustands-Mengenumwerter können auch Einrichtungen für die Korrektur der Fehler-kurve des Gaszählers enthalten.
ANMERKUNG   Die Zählerstandsablesungen vom Zustands-Mengenumwerter können in Verbindung mit den Zählerstandsablesungen von Gaszählern, die EN 1359, prEN 12480 oder prEN 12261 oder anderen passenden und relevanten internationalen oder nationalen Normen für Gaszähler entsprechen, ohne Vorbehalt bezüglich nationaler Regelungen für die Rechnungstellung an Endverbraucher genutzt werden
Diese Norm dient nur der Bauartprüfung.

Compteurs de gaz - Dispositifs électroniques de conversion de volume de gaz

La présente Norme européenne établit les exigences et les essais pour la construction, les performances, la sécurité et la conformité des dispositifs électroniques de conversion de volume de gaz associés à des compteurs de gaz, utilisés pour la mesure de volume de gaz combustibles des première et deuxième familles telles que définies dans l'EN 437.
La présente norme traite uniquement des trois types de conversion suivants :
¾ conversion en fonction de la température seule (appelée conversion T) ;
¾ conversion en fonction de la pression et de la température avec un facteur de compressibilité constant (appelée conversion PT) ;
¾ conversion en fonction de la pression, de la température et qui tient compte du facteur de compressibilité (appelée conversion PTZ).
Ces dispositifs de conversion sont constitués d'un calculateur et d'un transducteur de température ou d'un calculateur, d'un transducteur de température et d'un transducteur de pression installé localement.
Tout dispositif de conversion peut comporter une correction des erreurs du compteur.
NOTE   Lors de la présentation des comptes à l'utilisateur final, les mesurages issus du dispositif de conversion peuvent être utilisés conjointement avec les mesurages issus d'un compteur de volume de gaz conforme à l'une des normes suivantes, EN 1359, prEN 12480 ou prEN 12261 suivant le cas, ou à toute autre norme nationale ou internationale appropriée et applicable sur les compteurs de volume de gaz, dans le respect des réglementations nationales.
La présente norme est destinée aux essais de type.

Plinomeri - Elektronski korektorji

General Information

Status
Withdrawn
Publication Date
31-Jan-2004
Withdrawal Date
30-Nov-2005
ICS
91.140.40 - Gas supply systems
Technical Committee
DPL - Gas supply
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
01-Dec-2005
Due Date
01-Dec-2005
Completion Date
01-Dec-2005
Ref Project
EN 12405:2002 - Gas meters - Gas-volume electronic conversion devices

Relations

Replaced By
SIST EN 12405-1:2005 - Gas meters - Conversion devices - Part 1: Volume conversion
Effective Date
01-Dec-2005

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Plinomeri - Elektronski korektorjiGaszähler - Elektronische Zustands-MengenumwerterCompteurs de gaz - Dispositifs électroniques de conversion de volume de gazGas meters - Gas-volume electronic conversion devices91.140.40Sistemi za oskrbo s plinomGas supply systemsICS:Ta slovenski standard je istoveten z:EN 12405:2002SIST EN 12405:2004en01-februar-2004SIST EN 12405:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12405July 2002ICS 91.140.40English versionGas meters - Gas-volume electronic conversion devicesCompteurs de gaz - Dispositifs électroniques de conversionde volume de gazGaszähler - Elektronische Zustands-MengenumwerterThis European Standard was approved by CEN on 25 March 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12405:2002 ESIST EN 12405:2004

Type test.24A.1General conditions.24A.2Accuracy tests under reference conditions.26A.3Effect of ambient temperature.27A.4Effect of damp heat, steady state test.27A.5Effect of damp heat, cyclic test.28A.6Electrical power variation.29A.7Short time power interruption.29A.8Electrical bursts.30A.9Electromagnetic immunity.31A.10Electrostatic discharges.32A.11Effect of an overload of pressure.33A.12Mechanical resistance to overload of pressure.33A.13Effect of vibrations.34A.14Effect of shocks.35A.15Durability.35Annex B (informative)
Model type test report.37B.1General.37B.2Accuracy tests under reference conditions.38B.3Ambient temperature.39B.4Effect of damp heat, steady state test.42B.5Effect of damp heat, cyclic test.43B.6Electrical power variation.45B.7Short time power interruption.48B.8Electrical bursts.48B.9Electromagnetic immunity.49B.10Electrostatic discharges.50B.11Effect of an overload of static pressure.50B.12Mechanical resistance to overload of static pressure.51B.13Effect of vibrations.52B.14Effect of shocks.52B.15Durability.53Bibliography.56SIST EN 12405:2004
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This European Standard is intended to be applied in association with these national standards and/or codes of practice setting out the above-mentioned basic principles.
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This document specifies requirements on the development and implementation of a Safety Management System (SMS) and a Pipeline Integrity Management System (PIMS). The SMS is applicable for system operators of a gas infrastructure. The PIMS is applicable for system operators of gas infrastructure with a maximum operating pressure (MOP) over 16 bar.
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Specific requirements for occupational health and safety are excluded from this document. For these, other European and/or international standards, e.g. ISO 45001, apply.
This document specifies common basic principles for gas infrastructure. It is important that users of this document are expected to be aware that more detailed national standards and/or codes of practice exist in the CEN member countries. This document is intended to be applied in association with these national standards and/or codes of practice setting out the above-mentioned basic principles.
In the event of conflicts in terms of more restrictive requirements in national legislation/regulation with the requirements of this document, the national legislation/regulation takes precedence as illustrated in CEN/TR 13737 (all parts).
NOTE CEN/TR 13737 (all parts) contains:
- clarification of relevant legislation/regulations applicable in a country;
- if appropriate, more restrictive national requirements;
- national contact points for the latest information.

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SIST EN 17526:2022(Main)
Gas meters - Thermal-mass flow-meter based gas meter
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This document specifies requirements and tests for the construction, performance, safety and production of battery powered class 1,5 Capillary Thermal-Mass Flow sensor gas meters (hereinafter referred to as meter(s)). This applies to meters having co-axial single pipe, or two pipe connections, which are used to measure volumes of fuel gases of the 2nd and/or 3rd family, as given in EN 437:2018.
In general, the term “thermal mass flow meters” applies to a flow-measuring device using heat transfer to measure and indicate gas flowrate, as defined in ISO 14511.
NOTE 1   Although the word “mass” is present in the definition of the measurement principle, gas meters covered by this document provide measurement of gas at base conditions of temperature and pressure.
These meters have a maximum working pressure not exceeding 0,5 bar and a maximum flowrate not exceeding 160 m3/h over a minimum ambient temperature range of −10 °C to +40 °C and a gas temperature range as specified by the manufacturer with a minimum range of 40 °C.
This document applies to meters indicating volume at base conditions, which are installed in locations with vibration and shocks of low significance. It applies to meters in:
-   closed locations (indoor or outdoor with protection, as specified by the manufacturer) with condensing humidity or with non-condensing humidity;
or, if specified by the manufacturer:
-   open locations (outdoor without any covering) both with condensing humidity or with non-condensing humidity;
and in locations with electromagnetic disturbances likely to be found in residential, commercial and light industrial use.
For meters which indicate unconverted volume, reference can be made to Annex C.
Unless otherwise stated, all pressures given in this document are gauge pressures.
Requirements for electronic indexes, valves and additional requirements for batteries incorporated in the meter and any other additional functionalities are given in EN 16314:2013.
Unless otherwise stated in a particular test, the tests are carried out on meters that include additional functionality devices intended by the manufacturer.
Clauses 1 to 13 are for design and type testing only.

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SIST EN 12732:2022(Main)
Gas infrastructure - Welding steel pipework - Functional requirements
EN 12732:2021

This document contains requirements for the production and testing of weld joints for the installation and modification, including in-service welding, of onshore steel pipelines and pipework used in gas infrastructure. This includes all pressure ranges and processed, non-toxic and non-corrosive natural gas according to EN ISO 13686 and non-conventional gases such as (injected) biomethane and hydrogen, where:
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-   the pipework is not located within households or industrial installations according to EN 1775 or EN 15001;
-   the design temperature of the system is between −40 °C up to and including 120 °C.
For injected biomethane or hydrogen a detailed technical evaluation of the functional requirements is required, ensuring there are no other constituents or properties of the gases that can affect the integrity of the pipeline.
This document is not applicable to welds produced prior to the publication of this document.
This document specifies common basic principles for gas infrastructure. Users of this document are expected to be aware that there can exist more detailed national standards and/or codes of practice in the CEN member countries.
This document is intended to be applied in association with these national standards and/or codes of practice setting out the above-mentioned basic principles.
In the event of conflicts in terms of more restrictive requirements in national legislation/regulation with the requirements of this document, the national legislation/regulation takes precedence as illustrated in CEN/TR 13737 (all parts).
NOTE   CEN/TR 13737 (all parts) contains:
-   clarification of relevant legislation/regulations applicable in a country;
-   if appropriate, more restrictive national requirements;
-   national contact point for the latest information.

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SIST EN 12405-1:2022(Main)
Gas meters - Conversion devices - Part 1: Volume conversion
EN 12405-1:2021

This document specifies 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.
This document is intended for type testing, the detailed relevant provisions of which are given in Annex A.
Only three kinds of conversion are treated in this document:
-   conversion as a function of temperature only (called T conversion);
-   conversion as a function of the pressure and of the temperature with constant compression factor (called PT conversion);
-   conversion as a function of the pressure, the temperature and taking into account the compression factor (called PTZ conversion).
This document is not relevant to temperature conversion integrated into gas meters which only indicate the converted volume.
Gas-volume conversion devices consist of a calculator and a temperature transducer or a calculator, a temperature transducer and a pressure transducer locally installed.
For application of this document, a conversion device may be, as a choice of the manufacturer, considered as a complete instrument (Type 1) or made of separate elements (Type 2), according to the definitions given in 3.1.20.1 and 3.1.20.2.
In this last case, the provisions concerning pressure transducers, temperature sensors and temperature transducers are given in Annexes B, C and D respectively.
Any conversion device can provide an error curve correction for a gas meter.
NOTE   When rendering an account to an end user the readings from the conversion device can be used in conjunction with the readings from a gas meter conforming to EN 1359, EN 12480, or EN 12261, as appropriate, or to any other appropriate and relevant international or national standard for gas meters, without prejudice of national regulations.

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