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30106519 pdf 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 BS EN 12261 2002 This[.]

%5,7,6+67$1'$5' %6(1  Incorporating Corrigendum No 1, Amendment No *DVPHWHUV¦7XUELQH JDVPHWHUV This European Standard EN 12261:2002, with the incorporation of Amendment A1:2006 has the status of a British Standard ,&6            BS EN 12261:2002 National foreword This British Standard is the official English language version 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Corrigendum September 2003 and Amendment A1:2006 It together with BS EN 12480:2002, supersedes BS 4161-6:1987 which is withdrawn The start and finish of text introduced or altered by amendment is indicated in the text by tags !"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 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: — 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 A list of organizations represented on this committee can be 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 “Find” 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 obligations 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 Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 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 $PHQGPHQWVLVVXHGVLQFHSXEOLFDWLRQ $PG1R 'DWH &RPPHQWV  'HFHPEHU &RUUHFWLRQVWR&ODXVH  $QQH[ (E  DQG $QQH[ (E  September 2006 See national foreword &RUULJHQGXP1R  © BSI September 2006 16458 ISBN 580 39744 1,"*  -/ , ", 1,"* EN 12261 April 2002 +A1 1,"*-  ", May 2006  - £Ç°£Ĩä°£ä ,QFRUSRUDWLQJ FRUULJHQGXP 6HSWHPEHU ˜}ˆÃ…ÊÛiÀȜ˜ >ÃʓiÌiÀÃʇ /ÕÀLˆ˜i }>ấièi ôèiếấ`i }>õấ ôèiếấ`i }>õấDấèếLi >õBiấ /ếLi>`}>õBi /ấ ếôi> -è>`>`ấĩ>ấ>ôôi` Lịấ ấểấ-iôèiLiấểọọÊ iLiấ>i Lế` è Vôịấĩè èi ẫ  èi> ,i}ế>èấĩV Ã̈«Õ>Ìi ̅i Vœ˜`ˆÌˆœ˜Ã vœÀ }ˆÛˆ˜} ̅ˆÃ ÕÀœ«i>˜ -Ì>˜`>À`Ê̅iÊÃÌ>ÌÕÃʜv > ˜>̈œ˜>ÊÃÌ>˜`>À` ĩèếèấ>ịấ>èi>è 1ôè`>èi èấ>` LL}>ôV> iviiVi VVi} ếV >è> è>`>`ấ>ịấLi Lè>i` >ôôV>è èấèi >>}iiè ièi ấè >ịấ iLi / ếôi> -Ì>˜`>À` i݈ÃÌà ˆ˜ ̅Àii œvvˆVˆ>ÊÛiÀȜ˜ÃÊ­ ˜}ˆÃ…] Ài˜V…] iÀ“>˜®°  ÛiÀȜ˜ ˆ˜ >ịấèiấ>}ế>}i >`i Lịấè>>è ế`iấèi iôLèịấv > iLiấè èấĩ >}ế>}i >` ˜œÌˆvˆi`Ê̜Ê̅i >˜>}i“i˜ÌÊ i˜ÌÀi …>ÃÊ̅i Ã>“iÊÃÌ>ÌÕà >ÃÊ̅i œvvˆVˆ> ÛiÀȜ˜Ã° “i“LiÀÃÊ>ÀiÊ̅i ˜>̈œ˜>ÊÃÌ>˜`>À`ÃÊLœ`ˆiÃʜv ÕÃÌÀˆ>] i}ˆÕ“] âiV… ,i«ÕLˆV]                                                                                        ! HIGHSPEEDVERSION " NORMALSPEEDVERSION PREFERRED # LOWSPEEDVERSION "  #ONNECTIONSAND DIMENSIONS 4HE INLETAND OUTLETOFTHE METERSHALL HAVETHESAME NOMINAL DIAMETERAND CONNECTIONTYPE 4HE PREFERRED OVERALL LENGTH IN MILLIMETRES OF THE METER BETWEEN INLET AND OUTLET CONNECTIONS IS  $. 4OLERANCES ARE GIVEN IN )3/  h$ESIGNATION #h 4HE PREFERRED LENGTH IN MILLIMETRES OF $ FORTHE METERSHALL NOTBE EXCEEDED &ORSHORTERMETERSTHE MANUFACTURER SHALL BE ABLE TO PROVIDE A hMAKE UP SPOOL PIECEh TO BRING THEIR BODY LENGTHS UP TO THE PREFERRED LENGTH WHEREREQUESTED 4HE MAXIMUM OVERALL DISTANCE IN MILLIMETRES MEASURED FROMTHE EXTREMITY OF THE PROTRUDING PARTS TO THE METER AXIS SHOULD NOTEXCEED PLUS   $. &ORFLANGE CONNECTIONSREFERTO 4ABLE {°{ /i“«iÀ>ÌÕÀiÊÀ>˜}ià /…i }>à >˜`Ê Ì…i >“Lˆi˜ÌÊ Ìi“«iÀ>ÌÕÀiÊ À>˜}ià vœÀ ܅ˆV…Ê ̅i “iÌiÀÊ ˆÃÊ `iÈ}˜i`Ê Ìœ «iÀvœÀ“Ê ܈̅ˆ˜Ê ̅i ÃÌ>˜`>À` «iÀvœÀ“>˜ViÊëiVˆvˆV>̈œ˜ÊÅ> LiÊÃÌ>Ìi`°  £ĨĨÈ£\ĨääĨÊ­ ® !4.5 Climatic environment The climatic environment ranges for which the meter is designed to perform within the standard performance specification shall be stated." x iè}V> ôiv>Viấiàếiiè xÊ ii> >Vấèịôi v ièiấ> LiấếLiVèi`ấèấèiấiiấvấèièấôiVvi` xểấè iè>Lấèi iè}V> ôiv>Vi v èiấ èịôi v ièi v iấ èịôi v ièiấ Vôiấ >ấ >}i vấ ÈâiÃÊ œvÊ Ì…iÊ Ã>“i L>ÈV `iÈ}˜ >˜` >Ê À>˜}i œv ièi} V`è]ấ èiấ èịôiấ èiè >ị Li ôivi` > èi` ếLiấ v >ôi ièi ưÊấèấẩấ>ôiấiôiVèi vấõiđ Li}ấiôiiè>èi v è>è À>˜}i œv “iÌiÀ Èâià >˜` “iÌiÀˆ˜} Vœ˜`ˆÌˆœ˜Ã° >V… “iÌiÀ Vœ˜vœÀ“ˆ˜}Ê̜ > >ôôi`ấèịôiấ> Liấèièi` ``ế>ịấ>VV`}ấè >iíấ /iấiếè v èiấèièấLè>i` xểấ>` >˜˜iÝ ÊÅ> Li >Û>ˆ>Li œ˜ÊÀiµÕiÃÌÊ Ìœ}i̅iÀ ܈̅ >ÊÃÌ>Ìi“i˜ÌʜvÊ̅i Vœ˜`ˆÌˆœ˜ÃÊ՘`iÀ ܅ˆV…Ê̅iÊÌiÃÌ è ô>Vi /i ièiấ> Li vèèi`ấĩè > Vôiè ĩV >ị >vviVèấèi iè}V> ôiv>Vi ii>ấiàếiiè vấèiấèiè v>Vèịấè Liấếi` vấèiấèịôiấèiè >i }i ˆ˜ >˜˜iÝ ° 7…iÀiÊ̅iÊÌiÝÌÊÀiviÀÃÊ̜ > }>ÃÊvœÀÊvœÜÊÌiÃÌÃÊ̅ˆÃʓi>˜ÃÊ>ˆÀʜÀ > }>à vÀœ“ ̅i Êè ể` }> v>ị >ị èiấ }>ấ ô`i` ˆÌÊ ˆÃ ވi`ˆ˜}Ê Ãˆ“ˆ>ÀÊ “iÌÀœœ}ˆV>Ê ÀiÃՏÌà >ÌÊ > ,iޘœ`ÃÊ ˜Õ“LiÀÊ ÜˆÌ…ˆ˜ ´ x ¯ œv ̅i ,iޘœ`ÃʘՓLiÀÊ>ÌÊ̅i vœÀiÃii˜ “iÌiÀˆ˜} Vœ˜`ˆÌˆœ˜Ã° /iấ èè>ấ ếViè>èị vấ èi iàếôièấ ếi`ấ è i>ếiấ èi iÀÀœÀÊ œv ˆ˜`ˆV>̈œ˜Ê Å> Li V>VՏ>Ìi` >VVœÀ`ˆ˜}Ê̜ -" Ո`i° x°ĨÊ /ịôiấèiè} xểÊ xểÊÊ ấv `V>è ,iàếiiè /i iấ v `V>è œvÊ Ì…i “iÌiÀÊ Ã…> Li ˆ˜ >L܏ÕÌiÊ Û>Õià iÃà ̅>˜Ê ̅i “>݈“Õ“ «iÀ“ˆÃÈLi iÀÀœÀÃÊëiVˆvˆi` ˆ˜ />Li {]ÊÌ>Žˆ˜} >VVœÕ˜Ìʜv />Li x° />Li { p >݈“Õ“ «iÀ“ˆÃÈLi iÀÀœÀà œÜÊÀ>Ìi + >݈“Õ“ «iÀ“ˆÃÈLi iÀÀœÀà +“ˆ˜ q +  +Ì ´ÊĨʯ +Ì q + q +“>Ý ´£¯ Table — Transitional flow rate Qt ! ,>}i>Lèị +è Ê \ấểọ ọ]ểọấS +>í Ê \ấẻọ ọ]Êx S +“>Ý e £ \ xä ä]£äÊS +“>Ý !When the errors between Qt and Qmax all have the same sign, they shall all not exceed 0,5 % " " ££ % % )F TESTSATMORETHAN ONE PRESSURE ARE CARRIED OUT THE DIFFERENCE BETWEENTHERESULTS OFTHETESTSBETWEEN   • 1MAX AND 1MAXSHALL NOTEXCEED   FORMETERSWITH $  OR   FORMETERSWITH $ a  )F A METERHASBEEN CERTIFIED FORONEWORKING PRESSURERANGE ITISDEEMEDTO BE CERTIFIED FORANYSMALLER WORKING PRESSURERANGE )F A METERISCERTIFIED FORONERANGEABILITY ITISDEEMEDTO BE CERTIFIED FORANY LOWERRANGEABILITY  4EST "EFORETYPETESTING A METERSHALLUNDERGO ARUN IN PERIOD OF HOURSATA FLOWRATE OF ATLEAST   • 1MAX 4HETEST CONSISTS OF DETERMINING THE ERROR OF INDICATION OF THE COMPLETE METER AT THE FLOW RATES GIVEN IN 4ABLE &OR A METER TYPE SPECIFIED FOR MEASUREMENT IN A PRESSURE RANGE BELOW OR EQUAL TO  BAR THE ERROR OF INDICATIONTESTSHALL BE CARRIED OUTWITH A GASATATMOSPHERIC CONDITIONSo MBAR  &OR A METER TYPE SPECIFIED FOR MEASUREMENT IN A PRESSURE RANGE EXTENDED ABOVE  BAR THE ERROR OF INDICATIONTESTSHALL BE CARRIED OUTWITH A GASINTHERANGE OFTHESPECIFIED METERING CONDITIONS 4HETESTS SHALL BE CARRIED OUTATLEAST ATTHE LOWEST ANDTHE HIGHESTWORKING PRESSURESPECIFIED BYTHE MANUFACTURER (OWEVER FORSPECIFIED MAXIMUM PRESSURESABOVE BARATEST ATBARISDEEMED ACCEPTABLE 4ABLE ˆ 4EST FLOWRATESIN  OF QMAX ! 2ANGEABILITY                        "  !Metrological Stability"  2EQUIREMENTS )NTHE FLOWRATERANGE FROM  • 1MAXTO 1MAXTHE VARIATION OF THE ERROROF INDICATION OFTHE METERATEACH FLOWRATESHALLSTAY WITHIN ASPAN OF  

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