Gas meters - Conversion devices - Part 1: Volume conversion

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.
This European Standard 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 European Standard:
   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."
EN 12405-2 for energy conversion is in preparation.
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 European Standard, 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 3.1.18.1 and 3.1.18.2.
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.

Gaszähler - Umwerter - Teil 1: Volumenumwertung

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.
Diese Europäische Norm ist für die Bauartprüfung vorgesehen, deren relevante Bestimmungen im Einzelnen
in Anhang A angegeben sind.
In dieser Europäischen Norm werden nur drei Arten der Umwertung behandelt:
⎯ die Umwertung als reine Temperaturfunktion (T-Umwertung);
⎯ die Umwertung als Funktion von Druck und Temperatur mit einem konstanten Realgasfaktor
(PT-Umwertung);
⎯ die Umwertung als Funktion von Druck, Temperatur und Realgasfaktor (PTZ-Umwertung).
!Diese Europäische Norm gilt nicht für eine in einen Gaszähler integrierte Temperaturumwertung, wenn der
Gaszähler lediglich das umgewertete Volumen anzeigt."
EN 12405-2 zu Energieumwertung ist in Vorbereitung.
Zustands-Mengenumwerter bestehen aus einem Rechner und einem Temperaturmessumformer oder aus
einem Rechner, einem Temperaturmessumformer und einem Druckmessumformer, die in der Messanlage
installiert sind.
Für die Anwendung dieser Europäischen Norm kann ein Umwerter in Übereinstimmung mit den Definitionen
3.1.18.1 und 3.1.18.2 und je nach Hersteller ein Kompaktzustands-Mengenumwerter (vollständiges Gerät,
Typ 1) sein oder aus getrennten Elementen bestehen (Typ 2).
Im letztgenannten Fall sind die Bestimmungen zu Druckmessumformern, Temperaturmessfühlern und
Temperaturmessumformern in den Anhängen B, C bzw. D enthalten.
Alle Umwerter können auch Einrichtungen zur Korrektur der Fehlerkurve des Gaszählers enthalten.

Compteurs de gaz - Dispositifs de conversion - Partie 1: Conversion de volume

La présente Norme européenne définit des exigences et des essais pour la fabrication, les performances, la sécurité et la conformité des dispositifs électroniques de conversion de volume de gaz, associés à des compteurs de gaz et utilisés pour mesurer des volumes de gaz combustibles de première et deuxième famille, telles que définies dans l’EN 437.
Cette Norme européenne est destinée aux essais de type, pour lesquels les détails sont fournis à l’Annexe A.
Cette Norme européenne traite uniquement des trois types de conversion suivants :
-   conversion en fonction de la température seule (appelée «conversion T») ;
-   conversion en fonction de la pression et de la température avec un facteur de compressibilité constant (appelée «conversion PT») ;
-   conversion en fonction de la pression, de la température et avec prise en compte du facteur de compressibilité (appelée «conversion PTZ»).
!Le présent document ne s'applique pas à la conversion en fonction de la température intégrée aux compteurs à gaz qui n'affichent que le volume converti."
L’EN 12405-2 relative à la conversion d’énergie est en préparation.
Les dispositifs de conversion de volume de gaz sont constitués d’un calculateur et d’un transducteur de température, ou bien d’un calculateur, d’un transducteur de température et d’un transducteur de pression installé localement.
Pour l’application de la présente Norme européenne, le fabricant a le choix de considérer un dispositif de conversion en tant qu’instrument complet (Type 1) ou en tant qu’assemblage d’éléments séparés (Type 2), conformément aux définitions données en 3.1.18.1 et 3.1.18.2.
Dans le dernier cas, les données concernant les transducteurs de pression, les capteurs de température et les transducteurs de température sont respectivement fournies aux Annexes B, C et D.
Tout dispositif de conversion peut comporter une correction de la courbe d’erreur du compteur de gaz.

Plinomeri - Korektorji - 1. del: Volumska korekcija (vključno z dopolnili do A2)

Ta evropski standard določa zahteve in preskuse za konstrukcijo, delovanje, varnost in skladnost naprav za volumensko elektronsko konverzijo plina, ki povezanih s plinomeri, ki se uporabljajo za merjenje volumnov kurilnih plinov prve in druge družine po EN 437. Ta evropski standard je namenjen za tipsko preskušanje, katerega ustrezne podrobne določbe so podane v Dodatku A. V tem evropskem standardu so obravnavane zgolj tri vrste konverzije: konverzija kot funkcija samo temperature (imenovana Z konverzija); konverzija kot funkcija tlaka in temperature s stalnim kompresijskim dejavnikom (imenovana PT konverzija); konverzija kot funkcija tlaka, in temperature, ki upošteva kompresijski dejavnik (imenovana PTZ konverzija).

General Information

Status
Withdrawn
Publication Date
26-Oct-2010
Withdrawal Date
09-Oct-2018
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
10-Oct-2018

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Gaszähler - Umwerter - Teil 1: VolumenumwertungCompteurs de gaz - Dispositifs de conversion - Partie 1: Conversion de volumeGas meters - Conversion devices - Part 1: Volume conversion91.140.40Sistemi za oskrbo s plinomGas supply systemsICS:Ta slovenski standard je istoveten z:EN 12405-1:2005+A2:2010SIST EN 12405-1:2005+A2:2010en,fr,de01-december-2010SIST EN 12405-1:2005+A2:2010SLOVENSKI

STANDARDSIST EN 12405-1:2005/A1:2007SIST EN 12405-1:20051DGRPHãþD
SIST EN 12405-1:2005+A2:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12405-1:2005+A2
October 2010 ICS 91.140.40 Supersedes EN 12405-1:2005English Version
Gas meters - Conversion devices - Part 1: Volume conversion
Compteurs de gaz - Dispositifs de conversion - Partie 1: Conversion de volume

Gaszähler - Umwerter - Teil 1: Volumenumwertung This European Standard was approved by CEN on 15 March 2005 and includes Amendment 1 approved by CEN on 6 July 2006 and Amendment 2 approved by CEN on 19 September 2010.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN 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 translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12405-1:2005+A2:2010: ESIST EN 12405-1:2005+A2:2010

EN 12405-1:2005+A2:2010 (E) 2 Contents Page Foreword ...................................................................................................................................................................... 91Scope ............................................................................................................................................................ 102Normative references .................................................................................................................................. 103Terms, definitions and symbols ................................................................................................................. 123.1Terms and definitions ................................................................................................................................. 123.2Symbols ........................................................................................................................................................ 153.3!Classification" ..................................................................................................................................... 173.3.1Mechanical classes ..................................................................................................................................... 173.3.2Electromagnetic environmental classes ................................................................................................... 174Principle of measurement ........................................................................................................................... 174.1Conversion as a function of temperature ................................................................................................. 174.2Conversion as a function of pressure and temperature .......................................................................... 174.3Conversion as a function of pressure, temperature and deviation from the ideal gas law ................. 184.4Correction of the volume at measurement conditions ............................................................................ 195Rated operating conditions ........................................................................................................................ 195.1Specified field of measurement .................................................................................................................. 195.1.1Specified measurement range for gas pressure ...................................................................................... 195.1.2Specified measurement range for gas temperature ................................................................................. 195.1.3Gas characteristics ...................................................................................................................................... 205.1.4!Base conditions" ................................................................................................................................ 205.2!Environmental conditions" ................................................................................................................ 205.2.1Ambient temperature range ........................................................................................................................ 205.2.2Humidity range ............................................................................................................................................. 205.2.3!Mechanical environment" .................................................................................................................. 205.2.4Electromagnetic environment .................................................................................................................... 205.3Power supply ................................................................................................................................................ 206Construction requirements ......................................................................................................................... 206.1General .......................................................................................................................................................... 206.2Casings ......................................................................................................................................................... 216.3Indications .................................................................................................................................................... 226.3.1General .......................................................................................................................................................... 226.3.2Electronic indicating device ....................................................................................................................... 236.4Inputs for volume conversion .................................................................................................................... 246.5Battery powered conversion device .......................................................................................................... 246.6Security devices and alarms ...................................................................................................................... 257Installation requirements ............................................................................................................................ 257.1General .......................................................................................................................................................... 257.2Temperature transducer ............................................................................................................................. 267.3Pressure transducer .................................................................................................................................... 268Performance ................................................................................................................................................. 268.1Reference conditions .................................................................................................................................. 268.2Rated operating conditions ........................................................................................................................ 278.3Maximum permissible errors ...................................................................................................................... 278.3.1General .......................................................................................................................................................... 278.3.2Error of conversion...................................................................................................................................... 288.3.3Specific errors for a gas-volume conversion device, type 2 ................................................................... 288.4Conditions of matching the constituent elements of a conversion device type 2 ............................... 288.5Influence factors .......................................................................................................................................... 29SIST EN 12405-1:2005+A2:2010

EN 12405-1:2005+A2:2010 (E) 3 8.6Disturbances ................................................................................................................................................ 298.7Durability ...................................................................................................................................................... 298.8!Repeatability" ...................................................................................................................................... 298.9!Reliability" ........................................................................................................................................... 309Tests of conformity ..................................................................................................................................... 309.1Verification of the construction requirements ......................................................................................... 309.2Verification of the performance requirements ......................................................................................... 309.2.1Test conditions ............................................................................................................................................ 309.2.2Samples of gas volume conversion device type 1 required for testing ................................................ 319.2.3Samples of gas volume conversion devices type 2 required for testing .............................................. 349.3Test report .................................................................................................................................................... 3410Marking ......................................................................................................................................................... 3411!Installation and operating instructions" .......................................................................................... 35Annex A (normative)

Type test ............................................................................................................................... 37A.1General conditions ...................................................................................................................................... 37A.1.1General.......................................................................................................................................................... 37A.1.2Additional conditions specific to gas volume conversion devices type 1 ............................................ 37A.1.3Additional conditions specific to gas-volume conversion devices type 2 ............................................ 37A.1.4Test procedures ........................................................................................................................................... 38A.1.5Verification of the construction requirements ......................................................................................... 39A.2Accuracy tests under reference conditions.............................................................................................. 39A.2.1Objective ....................................................................................................................................................... 39A.2.2Reference to documents ............................................................................................................................. 40A.2.3Procedure ..................................................................................................................................................... 40A.2.4Acceptance criteria ...................................................................................................................................... 40A.3Effect of ambient temperature .................................................................................................................... 40A.3.1Objective ....................................................................................................................................................... 40A.3.2Reference to documents ............................................................................................................................. 40A.3.3Procedure ..................................................................................................................................................... 40A.3.4Acceptance criteria ...................................................................................................................................... 40A.4Effect of damp heat, steady state test ....................................................................................................... 40A.4.1Objective ....................................................................................................................................................... 40A.4.2Reference to documents ............................................................................................................................. 40A.4.3Procedure ..................................................................................................................................................... 41A.4.4Acceptance criteria ...................................................................................................................................... 41A.5Effect of damp heat, cyclic test .................................................................................................................. 41A.5.1Objective ....................................................................................................................................................... 41A.5.2Reference to documents ............................................................................................................................. 41A.5.3Procedure ..................................................................................................................................................... 41A.5.4Acceptance criteria ...................................................................................................................................... 42A.6Electrical power variation ........................................................................................................................... 42A.6.1Objective ....................................................................................................................................................... 42A.6.2Reference to documents ............................................................................................................................. 42A.6.3Procedure ..................................................................................................................................................... 42A.6.4Acceptance criteria ...................................................................................................................................... 42A.7Short time power reductions ...................................................................................................................... 43A.7.1Objective ....................................................................................................................................................... 43A.7.2Reference to documents ............................................................................................................................. 43A.7.3Procedure ..................................................................................................................................................... 43A.7.4Acceptance criteria ...................................................................................................................................... 43A.8Electrical bursts ........................................................................................................................................... 43A.8.1Objective ....................................................................................................................................................... 43A.8.2Reference to documents ............................................................................................................................. 43A.8.3Procedure ..................................................................................................................................................... 43A.8.4Acceptance criteria ...................................................................................................................................... 43A.9Electromagnetic susceptibility ................................................................................................................... 44A.9.1Objective ....................................................................................................................................................... 44A.9.2Reference to documents ............................................................................................................................. 44A.9.3Procedure ..................................................................................................................................................... 44SIST EN 12405-1:2005+A2:2010

EN 12405-1:2005+A2:2010 (E) 4 A.9.4Acceptance criteria ...................................................................................................................................... 44A.10Electrostatic discharges ............................................................................................................................. 44A.10.1Objective ....................................................................................................................................................... 44A.10.2Reference to documents ............................................................................................................................. 44A.10.3Procedure ..................................................................................................................................................... 44A.10.4Acceptance criteria ...................................................................................................................................... 45A.11Overload of pressure (only for type 1 and pressure transducers) ......................................................... 45A.11.1Objective ....................................................................................................................................................... 45A.11.2Reference to documents ............................................................................................................................. 45A.11.3Procedure ..................................................................................................................................................... 45A.11.4Acceptance criteria ...................................................................................................................................... 45A.12Effect of vibrations ...................................................................................................................................... 45A.12.1Objective ....................................................................................................................................................... 45A.12.2Reference to documents ............................................................................................................................. 45A.12.3Procedure ..................................................................................................................................................... 46A.12.4Acceptance criteria ...................................................................................................................................... 46A.13Effect of shocks ........................................................................................................................................... 46A.13.1Objective ....................................................................................................................................................... 46A.13.2Reference to documents ............................................................................................................................. 46A.13.3Procedure ..................................................................................................................................................... 46A.13.4Acceptance criteria ...................................................................................................................................... 46A.14Overload of pressure (mechanical)............................................................................................................ 46A.14.1Objective ....................................................................................................................................................... 46A.14.2Reference to documents ............................................................................................................................. 47A.14.3Procedure ..................................................................................................................................................... 47A.14.4Acceptance criteria ...................................................................................................................................... 47A.15Durability ...................................................................................................................................................... 47A.15.1Objective ....................................................................................................................................................... 47A.15.2Reference to documents ............................................................................................................................. 47A.15.3Procedure ..................................................................................................................................................... 47A.15.4Acceptance criteria ...................................................................................................................................... 48A.16Alarms operation ......................................................................................................................................... 48A.16.1Objective ....................................................................................................................................................... 48A.16.2Reference to documents ............................................................................................................................. 48A.16.3Procedure ..................................................................................................................................................... 48A.16.4Acceptance criteria ...................................................................................................................................... 48A.17!Repeatability ........................................................................................................................................... 48A.17.1Objective ....................................................................................................................................................... 48A.17.2Reference to standards ............................................................................................................................... 48A.17.3Procedure ..................................................................................................................................................... 49A.17.4Acceptance criteria" ................................................................................................................................ 49A.18#Short time DC power variations ............................................................................................................ 49A.18.1Objective ....................................................................................................................................................... 49A.18.2Reference to standards ............................................................................................................................... 49A.18.3Procedure ..................................................................................................................................................... 49A.18.4Acceptance criteria$ ................................................................................................................................ 49A.19#Surges on supply lines and/or signal lines ......................................................................................... 49A.19.1Objective ....................................................................................................................................................... 49A.19.2Reference to standards ............................................................................................................................... 50A.19.3Procedure ..................................................................................................................................................... 50A.19.4Acceptance criteria$ ................................................................................................................................ 50A.20#Power frequency magnetic field ........................................................................................................... 50A.20.1Objective ....................................................................................................................................................... 50A.20.2Reference to standards ............................................................................................................................... 50A.20.3Procedure ..................................................................................................................................................... 50A.20.4Acceptance criteria$ ................................................................................................................................ 50Annex B (normative)

Pressure transducers .......................................................................................................... 51B.1Scope ............................................................................................................................................................ 51B.2Rated operating conditions ........................................................................................................................ 51B.2.1Specified measurement range for pressure ............................................................................................. 51SIST EN 12405-1:2005+A2:2010

EN 12405-1:2005+A2:2010 (E) 5 B.2.2Environmental class .................................................................................................................................... 51B.2.3Power supply ............................................................................................................................................... 51B.3Construction requirements......................................................................................................................... 51B.3.1General.......................................................................................................................................................... 51B.3.2Casings ......................................................................................................................................................... 51B.3.3Indications .................................................................................................................................................... 51B.4Performances ..........................

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