EN 12405-1:2005
(Main)Gas meters - Conversion devices - Part 1: Volume conversion
General Information
- Abstract
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).
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.
- Status
- Withdrawn
- Publication Date
- 17-May-2005
- Withdrawal Date
- 26-Oct-2010
- Technical Committee
- CEN/TC 237 - Gas meters
- Drafting Committee
- CEN/TC 237/WG 4 - Associated conversion devices
- Current Stage
- 9960 - Withdrawal effective - Withdrawal
- Start Date
- 27-Oct-2010
- Completion Date
- 27-Oct-2010
- Directive
- Not Harmonized2004/22/EC - Measuring instrumentsOJ Ref: C, C 162 OJ Date: 14-Jul-2007
Relations
- Effective Date
- 22-Dec-2008
- Effective Date
- 18-Jan-2023
- Effective Date
- 01-Aug-2009
- Effective Date
- 22-Dec-2008
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Frequently Asked Questions
EN 12405-1:2005 is a standard published by the European Committee for Standardization (CEN). Its full title is "Gas meters - Conversion devices - Part 1: Volume conversion". This standard covers: 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). 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.
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). 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.
EN 12405-1:2005 is classified under the following ICS (International Classification for Standards) categories: 91.140.40 - Gas supply systems. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12405-1:2005 has the following relationships with other standards: It is inter standard links to EN 12405:2002, EN 12405-1:2005+A2:2010, EN 12405-1:2005/FprA2, EN 12405-1:2005/A1:2006. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 12405-1:2005 is associated with the following European legislation: EU Directives/Regulations: 2004/22/EC; Standardization Mandates: M/374. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN 12405-1:2005 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Gas meters - Conversion devices - Part 1: Volume conversionPlinomeri – Korektorji – 1. del: Volumska konverzijaCompteurs de gaz - Dispositifs de conversion - Partie 1: Conversion de volumeGaszähler - Umwerter - Teil 1: VolumenumwertungTa slovenski standard je istoveten z:EN 12405-1:2005SIST EN 12405-1:2005en,fr,de91.140.40Sistemi za oskrbo s plinomGas supply systemsICS:SIST EN 12405:20041DGRPHãþDSLOVENSKI
STANDARDSIST EN 12405-1:200501-december-2005
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12405-1
May 2005 ICS 91.140.40 Supersedes EN 12405:2002 English 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.
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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12405-1:2005: E
Type test.32 A.1 General conditions.32 A.1.1 General.32 A.1.2 Additional conditions specific to gas volume conversion devices type 1.32 A.1.3 Additional conditions specific to gas-volume conversion devices type 2.32 A.1.4 Test procedures.33 A.1.5 Verification of the construction requirements.34 A.2 Accuracy tests under reference conditions.34 A.2.1 Objective.34 A.2.2 Reference to documents.35 A.2.3 Procedure.35 A.2.4 Acceptance criteria.35 A.3 Effect of ambient temperature.35 A.3.1 Objective.35 A.3.2 Reference to documents.35 A.3.3 Procedure.35 A.3.4 Acceptance criteria.35 A.4 Effect of damp heat, steady state test.35 A.4.1 Objective.35 A.4.2 Reference to documents.35 A.4.3 Procedure.36 A.4.4 Acceptance criteria.36 A.5 Effect of damp heat, cyclic test.36 A.5.1 Objective.36 A.5.2 Reference to documents.36 A.5.3 Procedure.36 A.5.4 Acceptance criteria.37 A.6 Electrical power variation.37 A.6.1 Objective.37 A.6.2 Reference to documents.37 A.6.3 Procedure.37 A.6.4 Acceptance criteria.37 A.7 Short time power reductions.38 A.7.1 Objective.38 A.7.2 Reference to documents.38 A.7.3 Procedure.38 A.7.4 Acceptance criteria.38 A.8 Electrical bursts.38 A.8.1 Objective.38 A.8.2 Reference to documents.38 A.8.3 Procedure.38 A.8.4 Acceptance criteria.38 A.9 Electromagnetic susceptibility.39 A.9.1 Objective.39 A.9.2 Reference to dcouments.39 A.9.3 Procedure.39 A.9.4 Acceptance criteria.39 A.10 Electrostatic discharges.39 A.10.1 Objective.39 A.10.2 Reference to documents.39 A.10.3 Procedure.39 A.10.4 Acceptance criteria.40 A.11 Overload of pressure (only for type 1 and pressure transducers).40 A.11.1 Objective.40 A.11.2 Reference to documents.40
Pressure transducers.44 B.1 Scope.44 B.2 Rated operating conditions.44 B.2.1 Specified measurement range for pressure.44 B.2.2 Environmental class.44 B.2.3 Power supply.44 B.3 Construction requirements.44 B.3.1 General.44 B.3.2 Casings.44 B.3.3 Indications.44 B.4 Performances.45 B.4.1 Reference conditions.45 B.4.2 Rated operating conditions.45 B.4.3 Maximum permissible errors.45 B.4.4 Influence factors.45 B.4.5 Disturbances.45 B.4.6 Durability.45 B.5 Tests of conformity.46 B.5.1 Test conditions.46 B.5.2 Tests.46 B.5.3 Sample of pressure transducers required for testing.46 B.6 Marking.46 Annex C (normative)
Platinum resistance thermometer sensors.47 C.1 Scope.47 C.2 Operating rated conditions.47 C.2.1 Specified measurement range for temperature.47 C.2.2 Environmental class.47 C.3 Construction requirements.47 C.4 Performances.47 C.5 Marking.48 C.5.1 Required markings.48 C.5.2 Verification mark.48 C.6 Metrological verifications.48
Temperature transducers.51 D.1 Scope.51 D.2 Rated operating conditions.51 D.2.1 Specified measurement range for temperature.51 D.2.2 Environmental class.51 D.2.3 Power supply.51 D.3 Construction requirements.51 D.3.1 General.51 D.3.2 Casings.51 D.3.3 Indications.51 D.4 Performances.52 D.4.1 Reference conditions.52 D.4.2 Rated operating conditions.52 D.4.3 Maximum permissible errors.52 D.4.4 Influence factors.52 D.4.5 Disturbances.52 D.4.6 Durability.52 D.5 Tests of conformity.53 D.5.1 Test conditions.53 D.5.2 Tests.53 D.5.3 Sample of temperature transducers required for testing.53 D.6 Marking.53 Annex E (informative)
Model type test report for conversion devices.54 E.1 General.54 E.1.1 General remarks.54 E.1.2 Number of pages.54 E.1.3 Laboratory's identification.54 E.1.4 Applicant.54 E.1.5 Identification of device(s) submitted for testing.54 E.2 Accuracy tests under reference conditions.55 E.2.1 Ambient temperature during the test.55 E.2.2 Test equipment used.55 E.2.3 Test results.55 E.3 Ambient temperature.56 E.3.1 Effect of dry heat.56 E.3.2 Effect of cold.57 E.4 Effect of damp heat, steady state test.59 E.4.1 Ambient temperature during the test.59 E.4.2 Test equipment used.59 E.4.3 Test results.59 E.5 Effect of damp heat, cyclic test.60 E.5.1 Ambient temperature during the test.60 E.5.2 Test equipment used.60 E.5.3 Test results.61 E.6 Electrical power variation.62 E.6.1 AC power supply.62 E.6.2 DC power supply or battery supply.64 E.7 Short time power reductions.65 E.7.1 Test equipment used.65 E.7.2 Test results.65 E.8 Electrical bursts.66 E.8.1 Test equipment used.66 E.8.2 Test results.66
Model type test report for associated transducers.77 F.1 General.77 F.1.1 General remarks.77 F.1.2 Number of pages.77 F.1.3 Laboratory's identification.77 F.1.4 Applicant.77 F.1.5 Identification of device(s) submitted for testing.77 F.2 Accuracy tests under reference conditions.78 F.2.1 Ambient temperature during the test.78 F.2.2 Test equipment used.78 F.2.3 Test results.78 F.3 Ambient temperature.78 F.3.1 Effect of dry heat.78 F.3.2 Effect of cold.79 F.4 Effect of damp heat, steady state test.80 F.4.1 Ambient temperature during the test.80 F.4.2 Test equipment used.
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