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NEN EN 171 : 2002

Current

Current

The latest, up-to-date edition.

PERSONAL EYE-PROTECTION - INFRARED FILTERS - TRANSMITTANCE REQUIREMENTS AND RECOMMENDED USE

Published date

12-01-2013

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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Designation and identification
5 Requirements
  5.1 General
  5.2 Transmittance requirements
  5.3 Oculars with enhanced colour recognition (optional)
  5.4 Oculars with enhanced reflectance in the infrared (optional)
Annex A (normative) Relative visual attenuation quotient for
        signal light recognition
      A.1 Definition of relative visual attenuation quotient for
          signal light recognition
      A.2 Spectral functions for the calculation of luminous
          transmittance and relative visual attenuation quotients
Annex B (informative) Guidance on selection and use
      B.1 General
      B.2 Filters with enhanced colour recognition
      8.3 Filters with enhanced reflectance in the infrared
Annex C (informative) Uncertainty of measurement and results
        interpretation
      C.1 Test report and uncertainty of measurement
Annex ZA (informative) Clauses of this European Standard addressing
         essential requirements or other provisions of EU Directives

Specifies the transmittance requirements and the scale numbers for filters for protection against infra-red radiation.

DevelopmentNote
Supersedes NEN N 952. (04/2007)
DocumentType
Standard
PublisherName
Netherlands Standards
Status
Current
Supersedes

Standards Relationship
DIN EN 171:2002-08 Identical
I.S. EN 171:2002 Identical
UNE-EN 171:2002 Identical
ONORM EN 171 : 2002 Identical
EN 171:2002 Identical
UNI EN 171 : 2003 Identical
BS EN 171:2002 Identical

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