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1、? ? ? ? ? This European Standard EN 12261:2002, with the incorporation of Amendment A1:2006 has the status of a British Standard ? ? Incorporating Corrigendum No. 1, Amendment No. 1 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:30:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 12261
2、:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 22 May 2002 National foreword This British Standard is the official English language vers
3、ion of EN 12261:2002, including Corrigendum September 2003 and Amendment A1:2006. It together with BS EN 12480:2002, supersedes BS 4161-6:1987 which is withdrawn. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Tags indicating changes to CEN text
4、carry the number of the CEN amendment. For example, text altered by CEN Amendment 1:2006 is indicated by !“. The UK participation in its preparation was entrusted to Technical Committee GSE/25, Gas meters, which has the responsibility to: A list of organizations represented on this committee can be
5、obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Fin
6、d” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal
7、 obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages
8、This document comprisesa front cover, an inside front cover, the ENtitle page, pages 2 to 52, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. ISBN 0 580 39744 0 BSI September 2006 16458September 2006 See national f
9、oreword ? ? ? ? ? ? ? ? ? ? ? Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:30:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ? ? ? EN 12261 +A1 May 2006 April 2002 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
10、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:30:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ? ? ? ? ? 2Normative references? ? ? ?
11、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Annex A (normative) Test facility specifications.34 Annex B (normative) Perturbation testing.35 Annex C (informative) Recommendations for use.41 Annex D (normative) Individual
12、factory testing.42 Annex E (normative Metrological requirements and tests for each meter prior to dispatch (Individual meter testing).43 9.Documentation33 9.1 General.33 9.2 Declaration of conformity.33 9.3 Instruction manual.33 Annex ZA (informative)Relationship between this European Standard and t
13、he Essential Requirements of EU Directive 2004/22 Measuring Instruments Directive47 Bibliography .52 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:30:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ? ? ? ? This European Standard applies to turbine gas meters used to measure the volume of f
14、uel gases of the 1st and 2nd gas families, the composition of which is specified in EN 437, at maximum working pressures up to 420 bar, actual flow rates up to 25 000 m3/h over a gas temperature range of at least 40 K and for a climatic environmental temperature range of at least 50 K. This standard
15、 applies to meters that are installed in locations with vibration and shocks of low significance and in closed locations (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
16、without any covering) with condensing humidity or with non-condensing humidity and in locations with electromagnetic disturbances. !This European Standard specifies the measuring conditions, requirements and tests for the construction, performance and safety of class 1,0 axial and radial turbine gas
17、 meters with mechanical indicating devices, herein after referred to as a meter(s), having in-line pipe connections for gas flow measurement. Foreword to Amendment A1 This document (EN 12261:2002/A1:2006) has been prepared by Technical Committee CEN/TC 237 “Gas meters”, the secretariat of which is h
18、eld by BSI. This Amendment to the European Standard EN 12261:2002 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2006, and conflicting national standards shall be withdrawn at the latest by November 2006. This
19、 document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 2004/22, Measuring Instruments Directive (MID). For relationship with EU Directive, see informative Annex ZA, which is an i
20、ntegral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Icel
21、and, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:30:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ? ? ? ? ? ? ? ? ? ?
22、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Unless otherwise specified in this standard: all pressures used are gauge; all influence quantities, exce
23、pt the one under test, are kept relatively constant at their reference value.“ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:30:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ? ? ? ? ? ? ? For the purposes of this European Standard, the following terms and definitions apply ? ? ? measuring device in which the dynamic forces of the flow