1、BRITISH STANDARD BS EN ISO 15616-3:2003 Acceptance tests for CO 2 - laser beam machines for high quality welding and cutting Part 3: Calibration of instruments for measurement of gas flow and pressure The European Standard EN ISO 15616-3:2003 has the status of a British Standard ICS 25.160.30 BS EN
2、ISO 15616-3:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 19 March 2003 BSI 19 March 2003 ISBN 0 580 41431 0 National foreword This British Standard is the official English language version of EN ISO 15616-3:2003. It is identical with
3、ISO 15616-3:2003. The UK participation in its preparation was entrusted to Technical Committee WEE/47, Miscellaneous welding standards, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Sta
4、ndards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. Th
5、is publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible int
6、ernational/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 This document comprises a front cover, an inside front cover, the EN
7、 ISO title page, pages 2 to 5 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO156163 March2003 ICS25.160.30 Englishversion Ac
8、ceptancetestsforCO2laserbeammachinesforhighquality weldingandcuttingPart3:Calibrationofinstrumentsfor measurementofgasflowandpressure(ISO156163:2003) Essaisderceptiondesmachinesdesoudageetde coupagedequalitparfaisceaulaserCO2Partie3: Etalonnagedesinstrumentsdemesurededbitetde pressiondesgazdassistan
9、ce(ISO156163:2003) AbnahmeprfungenfrCO2Laserstrahlanlagenzum QualittsschweienundschneidenTeil3:Kalibrierenvon InstrumentenzumMessendesGasdurchflussesund drucks(ISO156163:2003) ThisEuropeanStandardwasapprovedbyCENon21November2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichst
10、ipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,Fre
11、nch,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,
12、Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,SlovakRepublic,Spain,Sweden,Switzerland and UnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinan
13、yformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO156163:2003EENISO156163:2003(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Purposeofthemeasurements . 4 4 Gaspressureandgasflow . 4 5 Examinationprocedure . 4 5.1 General4 5.2 Measuringdevicesandprocedure. 4ENI
14、SO156163:2003(E) 3 Foreword Thisdocument(ENISO156163:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC121,“Welding“,the secretariatofwhichisheldbyDS,incollaborationwithISO/TC44“Weldingandalliedprocesses“. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltexto
15、r byendorsement,atthelatestbySeptember2003,andconflictingnationalstandardsshallbewithdrawnatthe latestbySeptember2003. ThisEuropeanStandard“ AcceptancetestforCO 2 laserbeammachinesforhighqualityweldingandcutting ”consists ofthefollowingparts: Part1:Generalprinciples,acceptanceconditions Part2:Measur
16、ementofstaticanddynamicaccuracy Part3:Calibrationofinstrumentsformeasurementofgasflowandpressure AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany
17、,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, SlovakRepublic,Spain,Sweden,SwitzerlandandtheUnitedKingdom.ENISO156163:2003(E) 4 1Scope ThisPartofthisEuropeanStandardisapplicabletothemeasurementoftheprocessorientedgasparametersforthe acceptancetestsforCO 2 laserbe
18、ammachinesforhighqualityweldingandcuttingintwooperationdirections(2D)in accordancewithENISO156161. Thisstandardspecifiesexaminationproceduresforinstrumentsusedforcontrolofprocessorientedgasparameters. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromother
19、publications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditio
20、nofthe publicationreferredtoapplies(includingamendments). ENISO156161:2003, AcceptancetestsforCO 2 laserbeammachinesforhighqualityweldingandcutting Part1:Generalprinciples,acceptanceconditions(ISO156161:2003). 3 Purposeofthemeasurements Duringlaserprocessing,gasesandgasmixturesareusedasworkinggasesf
21、orjoiningprocedures(welding)oras cuttinggasesforseparatingprocedures(cutting). Toachievereproducibleprocessingresultstheworkinggashastobesuppliedwithawelldefinedandlongterm stablepressureandgasflowtothepointofuse.Thepurposeofthemeasurementsistocheckthereadingsofthe machineinstruments. 4 Gaspressurea
22、ndgasflow Thegaspressureisdividedintwopressurerangesof1MPa(10bar).Thegasflowis specifiedinlitresperminutel/min. 5 Examinationprocedure 5.1General ThelimitdeviationsarespecifiedinENISO156161:2003,Table2. Testingshallbecarriedoutusingtheprocessintheabsenceofthelaserbeamandworkpiece(i.e.noweldingor cut
23、tingtakesplace). 5.2 Measuringdevicesandprocedure 5.2.1 General Themeasuringdevicesusedshallbesuitableforthetestingwithrespecttothemeasuringrangeandthemaximum valueandrequiredaccuracy.ENISO156163:2003(E) 5 Allcomponentsbeingused,e.g.connectingfittings,hosesanddatapickupsshallbesuitableforthegasinque
24、stion atthepressureused. Thelimiterrorofthemeasuringdevicesshallbeatleast2%oftheirmaximumscalereading.Theequipmentshall becheckedforleaksaftersetup. Thetestequipmentandthesupplysystemshallbepurgedbeforetestingalternativegases.Thefumeextraction systemshallbeswitchedonduringtesting. 5.2.2 Testingofthe
25、gaspressure Theaccuracyofthegaspressuregaugesshallbeselectedaccordingtothetestrequirements. Thegaugeinstrumentrangeshouldbe10/16(measuringrange/maximumscalereading)forpressuresupto10bar and20/40forpressuresupto20bar.Toavoiderrorsofmeasurement,thepickupsshouldbeascloseaspossibleto thepickupforthemach
26、ineinstrument.Ifothergaspressuregaugesareusedtherequirementsaccordingto5.2.1 shallberespected. Measurementsshallbecarriedoutwithflowinggasstream:theflowrateorpressureshallbespecifiedforeachtype ofgas.Thefirstreadingshallbetakenafter2sandshallberecordedfor1mincontinuously.Measurementsshall coverthein
27、tendedworkingrangeoftheCO 2 laserbeammachine. 5.2.3 Testingofthegasflow Thegasflowgaugesshallbeselectedaccordingtothetestrequirements.Iftheselectedgaugerequires simultaneouspressuremeasurements(gasflowgaugewithfloatelement)theseshouldbeplacedclosetothegas flowgauge. Themanufacturerscorrectivefactors
28、shallbeusedtoevaluatetheresultsobtained.Thefirstvalueshouldberead after2sandshouldberecordedfor1mincontinuously.Measurementsshallcovertheintendedworkingrangeofthe CO 2 laserbeammachine.BS EN ISO 15616-3:2003 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the indepe
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