Gas meters - Conversion devices - Part 1: Volume conversion

To revise the Annex ZA, and the associated body text only, of EN 12405-1 to ensure the alignment with the Directive 2014/32/EU.

Gaszähler - Umwerter - Teil 1: Volumenumwertung

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 s'applique pour la conversion d’énergie.
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.
NOTE Lors de la présentation des relevés à l’utilisateur final, les mesurages issus du dispositif de conversion peuvent être utilisés conjointement avec les mesurages issus d’un compteur de gaz conforme à l’EN 1359, l’EN 12480 ou l’EN 12261 suivant le cas, ou à toute autre norme nationale ou internationale appropriée et applicable aux compteurs de gaz, dans le respect des réglementations nationales.

Plinomeri - Korektorji - 1. del: Volumska korekcija

Samo za revizijo dodatka ZA in povezanega telesa besedila standarda EN 12405-1, da se zagotovi usklajenost z direktivo 2014/32/EU.

General Information

Status
Withdrawn
Public Enquiry End Date
01-Feb-2018
Publication Date
06-Nov-2018
Withdrawal Date
16-Jan-2022
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
21-Dec-2021
Due Date
13-Jan-2022
Completion Date
17-Jan-2022

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Plinomeri - Korektorji - 1. del: Volumska korekcijaGaszähler - 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 12405-1:2018SIST EN 12405-1:2018en,fr,de01-december-2018SIST EN 12405-1:2018SLOVENSKI

STANDARDSIST EN 12405-1:2005+A2:20101DGRPHãþD
SIST EN 12405-1:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12405-1
October
t r s z ICS
{ sä s v rä v r Supersedes EN
s t v r wæ sã t r r w ªA tã t r s rEnglish Version
Gas meters æ Conversion devices æ Part
sã Volume conversion Compteurs de gaz æ Dispositifs de conversion æ Partie
sã Conversion de volume
Gaszähler æ Umwerter æ Teil
sã Volumenumwertung This European Standard was approved by CEN on
t June
t r s zä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels

t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s t v r wæ sã t r s z ESIST EN 12405-1:2018

EN 12405-1:2018 (E) 2 Contents Page European foreword ............................................................................................................................................................. 10 1 Scope .......................................................................................................................................................................... 11 2 Normative references .......................................................................................................................................... 11 3 Terms, definitions, symbols and classification .......................................................................................... 13 3.1 Terms and definitions ......................................................................................................................................... 13 3.2 Symbols ..................................................................................................................................................................... 17 3.3 Classification ........................................................................................................................................................... 18 3.3.1 Mechanical classes ................................................................................................................................................ 18 3.3.2 Electromagnetic environmental classes ....................................................................................................... 18 4 Principle of measurement ................................................................................................................................. 19 4.1 Conversion as a function of temperature ..................................................................................................... 19 4.2 Conversion as a function of pressure and temperature .......................................................................... 19 4.3 Conversion as a function of pressure, temperature and deviation from the ideal gas law ........ 20 4.4 Correction of the volume at measurement conditions ............................................................................ 20 5 Rated operating conditions ............................................................................................................................... 21 5.1 Specified field of measurement........................................................................................................................ 21 5.1.1 General ...................................................................................................................................................................... 21 5.1.2 Specified measurement range for gas pressure ......................................................................................... 21 5.1.3 Specified measurement range for gas temperature ................................................................................. 21 5.1.4 Gas characteristics ................................................................................................................................................ 21 5.1.5 Base conditions ...................................................................................................................................................... 21 5.2 Environmental conditions ................................................................................................................................. 21 5.2.1 Ambient temperature range ............................................................................................................................. 21 5.2.2 Humidity range ...................................................................................................................................................... 21 5.2.3 Mechanical environment .................................................................................................................................... 22 5.2.4 Electromagnetic environment .......................................................................................................................... 22 5.3 Power supply .......................................................................................................................................................... 22 6 Construction requirements ............................................................................................................................... 22 6.1 General ...................................................................................................................................................................... 22 6.2 Casings ...................................................................................................................................................................... 23 6.3 Indications ............................................................................................................................................................... 23 6.3.1 General ...................................................................................................................................................................... 23 6.3.2 Electronic indicating device .............................................................................................................................. 25 6.4 Inputs for volume conversion ........................................................................................................................... 25 6.5 Battery powered conversion device ............................................................................................................... 25 6.6 Security devices and alarms .............................................................................................................................. 26 7 Installation requirements .................................................................................................................................. 27 7.1 General ...................................................................................................................................................................... 27 7.2 Temperature transducer .................................................................................................................................... 27 7.3 Pressure transducer............................................................................................................................................. 27 8 Performance ........................................................................................................................................................... 28 8.1 Reference conditions ........................................................................................................................................... 28 SIST EN 12405-1:2018

EN 12405-1:2018 (E) 3 8.2 Rated operating conditions................................................................................................................................ 28 8.3 Maximum permissible errors ........................................................................................................................... 28 8.3.1 Conversion devices type 1 .................................................................................................................................. 28 8.3.2 Conversion devices type 2 .................................................................................................................................. 29 8.3.3 Error of conversion ............................................................................................................................................... 29 8.3.4 Specific errors for a gas-volume conversion device, type 2 ................................................................... 29 8.4 Conditions of matching the constituent elements of a conversion device type 2 .......................... 30 8.5 Influence factors .................................................................................................................................................... 30 8.6 Disturbances............................................................................................................................................................ 31 8.7 Durability ................................................................................................................................................................. 31 8.8 Repeatability ........................................................................................................................................................... 31 8.9 Reliability ................................................................................................................................................................. 31 9 Tests of conformity ............................................................................................................................................... 31 9.1 Verification of the construction requirements ........................................................................................... 31 9.2 Verification of the performance requirements .......................................................................................... 31 9.2.1 Test conditions ....................................................................................................................................................... 31 9.2.2 Samples of gas volume conversion device type 1 required for testing .............................................. 32 9.2.3 Samples of gas volume conversion devices type 2 required for testing ............................................ 35 9.3 Test report ............................................................................................................................................................... 36 10 Marking ..................................................................................................................................................................... 36 11 Installation and operating instructions ........................................................................................................ 37 Annex A (normative)

Type test ..................................................................................................................................... 38 A.1 General conditions ................................................................................................................................................ 38 A.1.1 General ...................................................................................................................................................................... 38 A.1.2 Additional conditions specific to gas volume conversion devices type 1.......................................... 38 A.1.3 Additional conditions specific to gas-volume conversion devices type 2 ......................................... 38 A.1.4 Test procedures ..................................................................................................................................................... 39 A.1.5 Verification of the construction requirements ........................................................................................... 40 A.2 Accuracy tests under reference conditions .................................................................................................. 40 A.2.1 Objective ................................................................................................................................................................... 40 A.2.2 Reference to documents ...................................................................................................................................... 41 A.2.3 Procedure ................................................................................................................................................................. 41 A.2.4 Acceptance criteria ............................................................................................................................................... 41 A.3 Effect of ambient temperature .......................................................................................................................... 41 A.3.1 Objective ................................................................................................................................................................... 41 A.3.2 Reference to documents ...................................................................................................................................... 41 A.3.3 Procedure ................................................................................................................................................................. 41 A.3.4 Acceptance criteria ............................................................................................................................................... 41 A.4 Effect of damp heat, steady-state test ............................................................................................................. 41 A.4.1 Objective ................................................................................................................................................................... 41 A.4.2 Reference to documents ...................................................................................................................................... 41 A.4.3 Procedure ................................................................................................................................................................. 42 A.4.4 Acceptance criteria ............................................................................................................................................... 42 A.5 Effect of damp heat, cyclic test .......................................................................................................................... 42 A.5.1 Objective ................................................................................................................................................................... 42 A.5.2 Reference to documents ...................................................................................................................................... 42 A.5.3 Procedure ................................................................................................................................................................. 42 A.5.4 Acceptance criteria ............................................................................................................................................... 42 A.6 Electrical power variation .................................................................................................................................. 43 A.6.1 Objective ................................................................................................................................................................... 43 A.6.2 Reference to documents ...................................................................................................................................... 43 A.6.3 Procedure ................................................................................................................................................................. 43 SIST EN 12405-1:2018

EN 12405-1:2018 (E) 4 A.6.4 Acceptance criteria ............................................................................................................................................... 43 A.7 Short time power reductions ............................................................................................................................ 43 A.7.1 Objective ................................................................................................................................................................... 43 A.7.2 Reference to documents ..................................................................................................................................... 43 A.7.3 Procedure................................................................................................................................................................. 43 A.7.4 Acceptance criteria ............................................................................................................................................... 44 A.8 Electrical bursts ..................................................................................................................................................... 44 A.8.1 Objective ................................................................................................................................................................... 44 A.8.2 Reference to documents ..................................................................................................................................... 44 A.8.3 Procedure................................................................................................................................................................. 44 A.8.4 Acceptance criteria ............................................................................................................................................... 44 A.9 Electromagnetic susceptibility ......................................................................................................................... 44 A.9.1 Objective ................................................................................................................................................................... 44 A.9.2 Reference to documents ..................................................................................................................................... 44 A.9.3 Procedure................................................................................................................................................................. 44 A.9.4 Acceptance criteria ............................................................................................................................................... 45 A.10 Electrostatic discharges ...................................................................................................................................... 45 A.10.1 Objective ................................................................................................................................................................... 45 A.10.2 Reference to documents ..................................................................................................................................... 45 A.10.3 Procedure................................................................................................................................................................. 45 A.10.4 Acceptance criteria ............................................................................................................................................... 45 A.11 Overload of pressure (only for type 1 and pressure transducers) ..................................................... 45 A.11.1 Objective ................................................................................................................................................................... 45 A.11.2 Reference to documents ..................................................................................................................................... 45 A.11.3 Procedure................................................................................................................................................................. 45 A.11.4 Acceptance criteria ............................................................................................................................................... 46 A.12 Effect of vibrations ................................................................................................................................................ 46 A.12.1 Objective ................................................................................................................................................................... 46 A.12.2 Reference to documents ..................................................................................................................................... 46 A.12.3 Procedure................................................................................................................................................................. 46 A.12.4 Acceptance criteria ............................................................................................................................................... 46 A.13 Effect of shocks ....................................................................................................................................................... 46 A.13.1 Objective ................................................................................................................................................................... 46 A.13.2 Reference to documents ..................................................................................................................................... 46 A.13.3 Procedure................................................................................................................................................................. 46 A.13.4 Acceptance criteria ............................................................................................................................................... 47 A.14 Overload of pressure (mechanical) ................................................................................................................ 47 A.14.1 Objective ................................................................................................................................................................... 47 A.14.2 Reference to documents ..................................................................................................................................... 47 A.14.3 Procedure................................................................................................................................................................. 47 A.14.4 Acceptance criteria ............................................................................................................................................... 47 A.15 Durability ................................................................................................................................................................. 47 A.15.1 Objective ................................................................................................................................................................... 47 A.15.2 Reference to documents ..................................................................................................................................... 47 A.15.3 Procedure................................................................................................................................................................. 48 A.15.4 Acceptance criteria ............................................................................................................................................... 48 A.16 Alarms operation .................................................................................................................................................. 48 A.16.1 Objective ................................................................................................................................................................... 48 A.16.2 Reference to documents ..................................................................................................................................... 48 A.16.3 Procedure................................................................................................................................................................. 48 A.16.4 Acceptance criteria ............................................................................................................................................... 48 A.17 Repeatability ........................................................................................................................................................... 49 A.17.1 Objective ................................................................................................................................................................... 49 A.17.2 Reference to standards ....................................................................................................................................... 49 SIST EN 12405-1:2018

EN 12405-1:2018 (E) 5 A.17.3 Procedure ................................................................................................................................................................. 49 A.17.4 Acceptance criteria ............................................................................................................................................... 49 A.18 Short time DC power variations ....................................................................................................................... 49 A.18.1 Objective ................................................................................................................................................................... 49 A.18.2 Reference to standards ........................................................................................................................................ 49 A.18.3 Procedure ................................................................................................................................................................. 49 A.18.4 Acceptance criteria ............................................................................................................................................... 49 A.19 Surges on supply lines and/or signal lines ................................................................................................... 50 A.19.1 Objective ................................................................................................................................................................... 50 A.19.2 Reference to standards ........................................................................................................................................ 50 A.19.3 Procedure ................................................................................................................................................................. 50 A.19.4 Acceptance criteria ............................................................................................................................................... 50 A.20 Power frequency magnetic field ...................................................................................................................... 50 A.20.1 Objective ................................................................................................................................................................... 50 A.20.2 Reference to standards ........................................................................................................................................ 50 A.20.3 Procedure .....................................................................................................................

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