BS EN 171-2002 Personal eye-protection - Infrared filters - Transmittance requirements and recommended use《个人眼睛保护 红外滤光镜 透射率要求和推荐的使用方法》.pdf
《BS EN 171-2002 Personal eye-protection - Infrared filters - Transmittance requirements and recommended use《个人眼睛保护 红外滤光镜 透射率要求和推荐的使用方法》.pdf》由会员分享,可在线阅读,更多相关《BS EN 171-2002 Personal eye-protection - Infrared filters - Transmittance requirements and recommended use《个人眼睛保护 红外滤光镜 透射率要求和推荐的使用方法》.pdf(16页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARD BS EN 171:2002 Personal eye-protection Infrared filters Transmittance requirements and recommended use The European Standard EN 171:2002 has the status of a British Standard ICS 13.340.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 171:2002 This Briti
2、sh Standard, having been prepared under the direction of the Health and Environment Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 13 May 2002 BSI 13 May 2002 ISBN 0 580 39695 9 National foreword This British Standard is the
3、official English language version of EN 171:2002. It supersedes BS EN 171:1992 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee PH/2, Eye-protection, to Subcommittee PH/2/4, Welding, ultra violet and infrared filters, which has the responsibility to: A
4、 list of organizations represented on this subcommittee 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 “Inte
5、rnational 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
6、 British Standard does not of itself confer immunity from legal 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 Europea
7、n developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 12, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendme
8、nts issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN171 March2002 ICS13.340.20 SupersedesEN171:1992 Englishversion PersonaleyeprotectionInfraredfiltersTransmittance requirementsandrecommendeduse ProtectionindividuelledeloeilFiltrespourlinfrarouge Exige
9、ncesrelativesaufacteurdetransmissionetutilisation recommande PersnlicherAugenschutzInfrarotschutzfilter TransmissionsanforderungenundempfohleneVerwendung ThisEuropeanStandardwasapprovedbyCENon20January2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsfor
10、givingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversionina
11、nyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembour
12、g,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnation
13、alMembers. Ref.No.EN171:2002EEN171:2002(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Designationandidentification 4 5 Requirements .4 5.1 General4 5.2 Transmittancerequirements .5 5.3 Ocularswithenhancedcolourrecognition(optional) . 5 5.4 Ocularswithenha
14、ncedreflectanceintheinfrared(optional) .6 AnnexA(normative) Relativevisualattenuationquotientforsignallightrecognition7 A.1 Definitionofrelativevisualattenuationquotientforsignallightrecognition.7 A.2 Spectralfunctionsforthecalculationofluminoustransmittanceandrelativevisual attenuationquotients 8 A
15、nnexB(informative) Guidanceonselectionanduse 9 B.1 General9 B.2 Filterswithenhancedcolourrecognition .9 B.3 Filterswithenhancedreflectanceintheinfrared. 9 AnnexC(informative) Uncertaintyofmeasurementandresultsinterpretation10 C.1 Testreportanduncertaintyofmeasurement .10 AnnexZA(informative) Clauses
16、ofthisEuropeanStandardaddressingessentialrequirementsorother provisionsofEUDirectives 12EN171:2002(E) 3 Foreword Thisdocument(EN171:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC85“Eyeprotectiveequipment“, thesecretariatofwhichisheldbyAFNOR. ThisEuropeanStandardshallbegiventhestatusofanationalstanda
17、rd,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbySeptember2002,andconflictingnationalstandardsshallbewithdrawnatthe latestbySeptember2002. ThisdocumentsupersedesEN171:1992. ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandtheEuropean FreeTradeAssociatio
18、n,andsupportsessentialrequirementsofEUDirective(s). ForrelationshipwithEUDirective(s),seeinformativeannexZA,whichisanintegralpartofthisdocument. InthisstandardtheannexAisnormativeandtheannexesBandCareinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefoll
19、owing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom.EN171:2002(E) 4 1Scope ThisEuropeanStandardspecifiesthescalenumb
20、ersandtransmittancerequirementsforfiltersforprotection againstinfraredradiation. Theotherapplicablerequirementsforthesetypesoffiltersandtheframes/mountingstowhichtheyareintendedto befittedaregiveninEN166. GuidanceontheselectionanduseofthesefiltersisgiveninannexB. NOTE Theprotectivefiltersspecifiedin
21、thisstandardarenotsuitableforthedirectorindirectobservationofanelectricar c. Forthispurposeaweldingfilterappropriatetothesourcebeingobservedshouldbyused. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesareciteda
22、ttheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includinga
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