1、BSI Standards PublicationBS EN 12480:2015Gas meters Rotarydisplacement gas metersBS EN 12480:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12480:2015. It supersedes BS EN 12480:2002 which is withdrawn.The UK participation in its preparation was entrusted
2、to Technical Committee GSE/25, Gas Meters.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standard
3、s Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 86491 9 ICS 91.140.40 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2015.Amen
4、dments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12480 March 2015 ICS 91.140.40 Supersedes EN 12480:2002English Version Gas meters - Rotary displacement gas meters Compteurs de gaz - Compteurs de gaz dplacement rotatif Gaszhle
5、r - Drehkolbengaszhler This European Standard was approved by CEN on 11 January 2015. 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
6、and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 th
7、e responsibility of a CEN member into its own language and notified to the CEN-CENELEC 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, Former Yugos
8、lav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN
9、DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12480:2015 EBS EN 12480:2015EN 12480:2015 (E) 2 Contents Page For
10、eword 5 1 Scope 6 2 Normative references 6 3 Terms and definitions . 11 3.1 Definitions 11 3.2 Symbols and abbreviations 14 4 Operating range . 14 4.1 General 14 4.2 Flow rate range (conformity/individual) 14 4.3 Operating pressure range (conformity/individual) . 15 4.4 Operating temperature range (
11、conformity/individual) . 15 5 Metrological performance . 15 5.1 General 15 5.2 Error of indication (conformity/individual) 15 5.2.1 Requirements . 15 5.2.2 Test 16 5.3 Pressure loss (conformity/individual) . 17 5.3.1 Requirements . 17 5.3.2 Test 17 5.4 Metrological repeatability (conformity) . 17 5.
12、4.1 Requirements . 17 5.4.2 Test 17 5.5 Operating pressure (conformity/individual) 18 5.5.1 General 18 5.5.2 Requirements . 18 5.5.3 Pattern approval test . 18 5.5.4 Individual test . 18 5.6 Temperature ranges (conformity) 18 5.6.1 General 18 5.6.2 Minimum operational temperature . 19 5.6.3 Maximum
13、operational temperature 19 5.6.4 Storage temperature range . 19 5.7 Condensing ambient conditions (conformity) 20 5.7.1 Requirements . 20 5.7.2 Test 20 5.8 Bidirectional meters (conformity) 20 5.8.1 Requirements . 20 5.8.2 Test 20 5.9 Influence of oil filling (conformity) . 20 5.9.1 Requirements . 2
14、0 5.9.2 Tests 20 6 Design and manufacturing . 20 6.1 General (conformity/individual) . 20 6.2 Material . 21 6.2.1 General (conformity) . 21 6.2.2 Design method . 21 6.2.3 Resistance to external corrosion . 21 6.2.4 Penetration resistance 21 BS EN 12480:2015EN 12480:2015 (E) 3 6.2.5 Adhesion of the p
15、rotective coating . 22 6.2.6 Materials for pressurized parts 22 6.3 Robustness 24 6.3.1 Resistance to internal pressure (conformity/individual) . 24 6.3.2 Fire resistance (conformity) . 25 6.3.3 External leak tightness (conformity/individual) . 25 6.3.4 Overload (conformity) . 26 6.3.5 Bending and t
16、orsional moment (conformity) . 26 6.4 Transportation and storage (conformity/individual) 28 6.4.1 Protection against foreign matter 28 6.4.2 Protection against damage 29 6.5 Connections (conformity) . 29 6.6 Pressure and temperature tappings (conformity) 29 6.6.1 Pressure tappings . 29 6.6.2 Tempera
17、ture tappings . 30 6.7 Manufacturing 30 7 Meter output (conformity) . 31 7.1 Index . 31 7.1.1 General . 31 7.1.2 Magnetic coupling . 31 7.1.3 Mechanical indicating device . 31 7.1.4 Test element . 32 7.2 Index window . 33 7.2.1 Requirements . 33 7.2.2 Tests . 33 7.3 Output drive shafts 34 7.3.1 Requ
18、irements . 34 7.3.2 Tests . 36 7.4 Pulse generators . 36 7.4.1 General . 36 7.4.2 Specification for low frequency pulse generator . 37 7.4.3 Specification for high frequency pulse generator . 37 7.4.4 Electrical Connection 37 8 Durability (conformity) 38 8.1 Requirements . 38 8.2 Tests . 38 9 Markin
19、g, labelling and packaging (conformity/individual) 38 9.1 General . 38 9.2 Direction of flow 39 9.3 Pressure tappings . 39 9.4 Durability and legibility of marking . 39 9.4.1 Requirements . 39 9.4.2 Test . 39 10 Documentation (conformity) 39 10.1 General . 39 10.2 Documentation related to the manufa
20、cturers tests 39 10.3 Declaration of conformity . 40 10.4 Instruction manual 40 Annex A (normative) Pattern approval . 41 Annex B (normative) Individual meter testing . 43 Annex C (normative) Resistance to high temperature (optional) . 44 C.1 Requirements . 44 BS EN 12480:2015EN 12480:2015 (E) 4 C.2
21、 Test 44 C.2.1 Apparatus . 44 C.2.2 Test conditions 44 C.2.3 Test procedure . 45 C.3 Marking . 46 Annex D (normative) Compliance evaluation for gas meters . 47 D.1 General 47 D.2 Quality Management System 47 D.2.1 General 47 D.2.2 Procedures . 47 D.2.3 Manufacturers compliance evaluation . 48 D.2.4
22、Issue of the certificate of compliance . 48 Annex E (normative) Non-destructive testing (NDT) . 49 Annex F (normative) Materials for pressurized parts 51 Annex G (normative) Additional tests for meters to be used in open locations . 63 G.1 General 63 G.2 Weathering . 63 G.2.1 Requirements . 63 G.2.2
23、 Test 63 Annex H (normative) Meter family . 64 H.1 Definition of meter family 64 H.2 Criteria for grouping meters together in order to form a family . 64 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2014/32 Measuring Instruments Di
24、rective . 65 Annex ZB (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC 69 Bibliography 71 BS EN 12480:2015EN 12480:2015 (E) 5 Foreword This document (EN 12480:2015) has been prepared by Technical Committee CEN/TC 237 “Gas meters”, the
25、secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2015 and conflicting national standards shall be withdrawn at the latest by September 2015. Attention
26、 is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12480:2002. This document has been prepared under a mandate given t
27、o CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directives. For relationship with EU Directives, see informative Annex ZA and ZB, which are integral parts of this document. According to the CEN-CENELEC Internal Regulations, the nati
28、onal standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lit
29、huania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 12480:2015EN 12480:2015 (E) 6 1 Scope This European Standard specifies ranges, construction, performances, output characteristics and testin
30、g of rotary displacement gas meters (hereinafter referred to as RD meters or simply meters) for gas volume measurement. This European Standard applies to rotary displacement gas meters used to measure the volume of fuel gases of at least the 1st, 2nd and 3rd gas families, the composition of which is
31、 specified in EN 437:2003+A1:2009, at a maximum working pressure up to and including 20 bar over an ambient and gas temperature range of at least 10 C to +40 C. This European Standard applies to meters that are installed in locations with vibration and shocks of low significance and in closed locati
32、ons (indoor or outdoor with protection as specified by the manufacturer) with condensing or with non-condensing humidity or, if specified by the manufacturer, open locations (outdoor without any covering) with condensing humidity or with non-condensing humidity; Unless otherwise specified in this st
33、andard: all pressures used are gauge; all influence quantities, except the one under test, are kept relatively constant at their reference value. This European Standard also applies to meters with a maximum allowable pressure PS and the volume V of less than 6 000 bar litres or with a product of PS
34、and DN of less than 3 000 bar. NOTE These limits are the same as in EU directive 97/23/EC. This European Standard can be used for both pattern approval and individual meter testing. Cross-reference tables are given in: Annex A for the tests that need to be undertaken for pattern approval; Annex B fo
35、r individual meter testing. Some parts of this standard cover meters with mechanical index only. The risk philosophy adopted in this standard is based on the analysis of hazards on account of pressure. The standard applies principles to eliminate or reduce hazards. Where these hazards cannot be elim
36、inated appropriate protection measures are specified. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest e
37、dition of the referenced document (including any amendments) applies. EN 485-2:2013, Aluminium and aluminium alloys - Sheet, strip and plate - Part 2: Mechanical properties EN 586-2:1994, Aluminium and aluminium alloys - Forgings - Part 2: Mechanical properties and additional property requirements B
38、S EN 12480:2015EN 12480:2015 (E) 7 EN 754-2:2013, Aluminium and aluminium alloys - Cold drawn rod/bar and tube - Part 2: Mechanical properties EN 755-2:2013, Aluminium and aluminium alloys - Extruded rod/bar, tube and profiles - Part 2: Mechanical properties EN 1057:2006+A1:2010, Copper and copper a
39、lloys - Seamless, round copper tubes for water and gas in sanitary and heating applications EN 1092-1:2007+A1:2013, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges EN 1092-2:1997, Flanges and their joints - Circular flang
40、es for pipes, valves, fittings and accessories, PN designated - Part 2: Cast iron flanges EN 1092-3:2003, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 3: Copper alloy flanges EN 1092-4:2002, Flanges and their joints - Circular flanges
41、for pipes, valves, fittings and accessories, PN designated - Part 4: Aluminium alloy flanges EN 1563:2011, Founding - Spheroidal graphite cast irons EN 1652:1997, Copper and copper alloys - Plate, sheet, strip and circles for general purposes EN 1706:2010, Aluminium and aluminium alloys - Castings -
42、 Chemical composition and mechanical properties EN 1759-1:2004, Flanges and their joint - Circular flanges for pipes, valves, fittings and accessories, Class designated - Part 1: Steel flanges, NPS 1/2 to 24 EN 1759-3:2003, Flanges and their joints - Circular flanges for pipes, valves, fittings and
43、accessories, Class designated - Part 3: Copper alloy flanges EN 1759-4:2003, Flanges and their joint - Circular flanges for pipes, valves, fittings and accessories, class designated - Part 4: Aluminium alloy flanges EN 1982:2008, Copper and copper alloys - Ingots and castings EN 10025 (all parts), H
44、ot rolled products of structural steels EN 10028-2:2009, Flat products made of steels for pressure purposes - Part 2: Non-alloy and alloy steels with specified elevated temperature properties EN 10028-3:2009, Flat products made of steels for pressure purposes - Part 3: Weldable fine grain steels, no
45、rmalized EN 10028-4:2009, Flat products made of steels for pressure purposes - Part 4: Nickel alloy steels with specified low temperature properties EN 10028-6:2009, Flat products made of steels for pressure purposes - Part 6: Weldable fine grain steels, quenched and tempered EN 10028-7:2007, Flat p
46、roducts made of steels for pressure purposes - Part 7: Stainless steels EN 10083-1:2006, Steels for quenching and tempering - Part 1: General technical delivery conditions BS EN 12480:2015EN 12480:2015 (E) 8 EN 10083-2:2006, Steels for quenching and tempering - Part 2: Technical delivery conditions
47、for non alloy steels EN 10087:1998, Free-cutting steels - Technical delivery conditions for semi-finished products, hot-rolled bars and rods EN 10088-1:2014, Stainless steels - List of stainless steels EN 10088-3:2014, Stainless steels - Technical delivery conditions for semi-finished products, bars
48、, rods, wire, sections and bright products of corrosion resisting steels for general purposes EN 10111:2008, Continuously hot rolled low carbon steel sheet and strip for cold forming - Technical delivery conditions EN 10130:2006, Cold rolled low carbon steel flat products for cold forming - Technica
49、l delivery conditions EN 10204:2004, Metallic products - Types of inspection documents EN 10222-1:1998, Steel forgings for pressure purposes - Part 1: General requirements for open die forgings EN 10222-5:1999, Steel forgings for pressure purposes - Part 5: Martensitic, austenitic and austenitic-ferritic stainless steels EN 10213:2007, Steel castings for pressure purposes EN 10250-1:1999, Open die steel forgings for general engineering purposes - Part 1: General requirements EN 10250-2:1999, Open die steel forgings for general engineering purposes - Part
