SIST EN 171:2002
(Main)Personal eye-protection - Infrared filters - Transmittance requirements and recommended use
Personal eye-protection - Infrared filters - Transmittance requirements and recommended use
This European Standard specifies the scale numbers and transmittance requirements for filters for protection against infrared radiation.
The other applicable requirements for these types of filters and the frames/mountings to which they are intended to be fitted are given in EN 166.
Guidance on the selection and use of these filters is given in annex B.
NOTE The protective filters specified in this standard are not suitable for the direct or indirect observation of an electric arc. For this purpose a welding filter appropriate to the source being observed should by used.
Persönlicher Augenschutz - Infrarotschutzfilter - Transmissionsanforderungen und empfohlene Verwendung
Diese Europäische Norm legt Schutzstufen und Transmissionsanforderungen für Infrarotschutzfilter fest.
Weitere geltende Anforderungen für diese Filterarten und Fassungen/Tragkörper dieser Filter werden in EN 166 angegeben.
Anhang B gibt einen Leitfaden für die Auswahl und Anwendung dieser Filter.
ANMERKUNG Die in dieser Norm festgelegten Schutzfilter sind nicht brauchbar für direkte oder indirekte Beobachtung von elektrischen Lichtbögen. Für diese Zwecke sollte ein für die Lichtquelle geeignetes Schweißerschutzfilter verwendet werden.
Protection individuelle de l'oeil - Filtres pour l'infrarouge - Exigences relatives au facteur de transmission et utilisation recommandée
La présente Norme européenne spécifie les numéros d'échelon et les exigences relatives au facteur de transmission des filtres de protection contre le rayonnement infrarouge. Les autres exigences applicables pour ce type de filtres figurent dans l'EN 166:1995. Un guide pour le choix et l'utilisation de ces filtres est donné en Annexe A.
Osebno varovanje oči - Infrardeči filtri - Zahteve za prepustnost in priporočena uporaba
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Personal eye-protection - Infrared filters - Transmittance requirements and recommended useXSRUDEDProtection individuelle de l'oeil - Filtres pour l'infrarouge - Exigences relatives au facteur de transmission et utilisation recommandéePersönlicher Augenschutz - Infrarotschutzfilter - Transmissionsanforderungen und empfohlene Verwendung13.340.20Varovalna oprema za glavoHead protective equipmentICS:SIST EN 171:2002enTa slovenski standard je istoveten z:EN 171:200201-november-2002SIST EN 171:2002SLOVENSKI
STANDARDSIST EN 171:19961DGRPHãþD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 171March 2002ICS 13.340.20Supersedes EN 171:1992English versionPersonal eye-protection - Infrared filters - Transmittancerequirements and recommended useProtection individuelle de l'oeil - Filtres pour l'infrarouge -Exigences relatives au facteur de transmission et utilisationrecommandéePersönlicher Augenschutz - Infrarotschutzfilter -Transmissionsanforderungen und empfohlene VerwendungThis European Standard was approved by CEN on 20 January 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 171:2002 E
EN 171:2002 (E)2ContentspageForeword.31Scope.42Normative references.43Terms and definitions.44Designation and identification.45Requirements.45.1General.45.2Transmittance requirements.55.3Oculars with enhanced colour recognition (optional).55.4Oculars with enhanced reflectance in the infrared (optional).6Annex A (normative)
Relative visual attenuation quotient for signal light recognition.7A.1Definition of relative visual attenuation quotient for signal light recognition.7A.2Spectral functions for the calculation of luminous transmittance and relative visualattenuation quotients.8Annex B (informative)
Guidance on selection and use.9B.1General.9B.2Filters with enhanced colour recognition.9B.3Filters with enhanced reflectance in the infrared.9Annex C (informative)
Uncertainty of measurement and results interpretation.10C.1Test report and uncertainty of measurement.10Annex ZA (informative)
Clauses of this European Standard addressing essential requirements or otherprovisions of EU Directives.12
EN 171:2002 (E)3ForewordThis document (EN 171:2002) has been prepared by Technical Committee CEN/TC 85 "Eye-protective equipment",the secretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by September 2002, and conflicting national standards shall be withdrawn at thelatest by September 2002.This document supersedes EN 171:1992.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association, and supports essential requirements of EU Directive(s).For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.In this standard the annex A is normative and the annexes B and C are informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,Sweden, Switzerland and the United Kingdom.
EN 171:2002 (E)41 ScopeThis European Standard specifies the scale numbers and transmittance requirements for filters for protectionagainst infrared radiation.The other applicable requirements for these types of filters and the frames/mountings to which they are intended tobe fitted are given in EN 166.Guidance on the selection and use of these filters is given in annex B.NOTEThe protective filters specified in this standard are not suitable for the direct or indirect observation of an electric arc.For this purpose a welding filter appropriate to the source being observed should by used.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 165, Personal eye-protection – Vocabulary.EN 166, Personal eye-protection – Specifications.EN 167:2001, Personal eye-protection – Optical test methods.ISO/CIE 10526:1991, CIE standard illuminants for colorimetry.ISO/CIE 10527:1991, CIE standard colorimetric observers.3 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN 165 apply.4 Designation and identificationThe complete table of numbering of filters is given in EN 166.The marking of oculars and frame is described in EN 166.The scale number of infrared filters comprises the code number 4, and the shade number corresponding to thefilter, from 1,2 to 10 (see Table 1).5 Requirements5.1 GeneralThe requirements of EN 166 apply to infrared filters. Only those requirements that are different from or supplementthe EN 166 specifications are given in this European Standard.
EN 171:2002 (E)55.2 Transmittance requirementsThe definitions of transmittances are given in EN 165.The determination of luminous transmittance is described in EN 167:2001.The transmittance requirements for filters used for protection against infrared radiation are given in Table 1.Table 1 – Transmittance requirementsLuminoustransmittancevMaximum meanspectral transmittance inthe infraredScalenumberMaximum%Minimum%A780 nm to 1 400 nm%N780 nm to 2 000 nm%4 – 1,210074,45,552,94 – 1,474,458,14,847,24 – 1,758,143,24,142,24 – 243,229,13,637,94 – 2,529,117,82,932,34 – 317,88
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