SIST EN 172:1996/A2:2001
(Amendment)Personal eye protection - Sunglare filters for industrial use
Personal eye protection - Sunglare filters for industrial use
Migrated from Progress Sheet (TC Comment) (2000-07-10): UAP of 6 months (TC Res 170/1999) (CC/000124)
Persönlicher Augenschutz - Sonnenschutzfilter für den betrieblichen Gebrauch
Protection individuelle de l'oeil - Filtres de protection solaire pour usage industriel
Osebno varovanje oči - Filtri za zaščito pred sončnim bleskom v industriji
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 172:1996/A2:2001
01-december-2001
2VHEQRYDURYDQMHRþL)LOWUL]D]DãþLWRSUHGVRQþQLPEOHVNRPYLQGXVWULML
Personal eye protection - Sunglare filters for industrial use
Persönlicher Augenschutz - Sonnenschutzfilter für den betrieblichen Gebrauch
Protection individuelle de l'oeil - Filtres de protection solaire pour usage industriel
Ta slovenski standard je istoveten z: EN 172:1994/A2:2001
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
SIST EN 172:1996/A2:2001 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN 172:1994/A2
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2001
ICS 13.340.20
English version
Personal eye protection - Sunglare filters for industrial use
Protection individuelle de l'oeil - Filtres de protection solaire Persönlicher Augenschutz - Sonnenschutzfilter für den
pour usage industriel betrieblichen Gebrauch
This amendment A2 modifies the European Standard EN 172:1994; it was approved by CEN on 29 June 2001.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the Management Centre or to any CEN member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 172:1994/A2:2001 E
worldwide for CEN national Members.
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EN 172:1994/A2:2001 (E)
Foreword
This Amendment EN 172:1994/A2:2001 to the EN 172:1994 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 or
by endorsement, at the latest by February 2002, and conflicting national standards shall be withdrawn at the latest
by February 2002.
This Amendment to the European Standard EN 172:1994 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(s).
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,
Switzerland and the United Kingdom.
2
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EN 172:1994/A2:2001 (E)
Revised text
5.3.1 Photochromic sunglare filters
5.3.1.1 Conditioning
Unless the manufacturer specifies a different procedure to reach the faded state in the information supplied with
the product, photochromic filters shall be conditioned by the following procedure.
Store samples in the dark at (65 ± 5) °C for (2 ± 0,2) h. Then store in the dark at (23 ± 5) °C for at least 12 h.
5.3.1.2 Measurement
NOTE Most photochromic materials respond to normal room lighting and all measurements should therefore be made in
absence of extraneous light.
WARNING Care should be taken to ensure that the radiation used for the measurements does not cause
darkening or bleaching of the sample.
In order to test the variability of the transmittance, a source simulating daylight shall be used. It should approximate
as closely as practicable to the spectral distribution of solar radiation for air mass m = 2 (P. Moon, Journal of the
Franklin Institute, Vol. 230 (1940), pp 583-617, see also Table 6 of CIE 85:1989 for the spectral distribution of solar
radiation.) at an illuminance of (50 000 ± 5 000) lux, respecting the values given in Table 4.
Testing shall be done with a Xenon high pressure lamp with filters chosen so that the specified illuminance of
(50 000 ± 5 000) lux and the irradiance values given in Table 3 are reached. The permissible tolerances of the
irradiance values are also given in Table 3.
Table 3 - Irradiance for testing the darkened state of photochromic lenses
Wavelength range Irradiance T
...
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