| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 1<\/td>\n | BRITISH STANDARD <\/td>\n<\/tr>\n | ||||||
| 2<\/td>\n | Committees responsible for this British Standard <\/td>\n<\/tr>\n | ||||||
| 3<\/td>\n | Contents <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | EUROPEAN STANDARD NORME EUROP\u00c9ENNE EUROP\u00c4ISCHE NORM EN ISO 4892-2 ICS 83.080.00 Incorporating Corrigendum November 2005 English version Plastics – Methods of exposure to laboratory light sources – Part 2: Xenon-arc sources (ISO 4892-2:1994) CEN European Committee for Standardization Comit\u00e9 Europ\u00e9en de Normalisation Europ\u00e4isches Komitee f\u00fcr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels \u00a9 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref. No. EN ISO 4892-2:1999 E <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 1 Scope 2 Normative references 3 Principle 3.1 A xenon arc, when fitted with suitable filters and properly maintained, produces radiation with a spectral energy distribution similar to that of terrestrial sunlight in the ultraviolet and visible regions of the spectrum. 3.2 Specimens of the samples to be tested are exposed to the light source under controlled environmental conditions. 3.3 The procedure may include measurement of the irradiance and radiant exposure at the surface of the specimen. 3.4 It is recommended that a similar material of known behaviour be exposed simultaneously with the experimental material as a reference. 3.5 Intercomparison of results obtained from specimens exposed in different apparatus should not be made unless reproducibility has been established among devices for the material to be tested. 4 Apparatus 4.1 Laboratory light source <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | Relative spectral irradiance for artificial weathering (method A) Relative spectral irradiance for daylight behind window glass (method B) 4.2 Test chamber <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 4.3 Radiometer 4.4 Black-standard\/black-panel thermometer 4.5 Relative-humidity control equipment 4.6 Spray system 4.7 Specimen holders 4.8 Apparatus to assess changes in properties 5 Test specimens 6 Test conditions 6.1 Black-standard\/black-panel temperature <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 6.2 Relative humidity 6.3 Spray cycle 6.4 Cycles with dark periods 7 Procedure 7.1 Mounting the test specimens 7.2 Exposure 7.3 Measurement of radiant exposure 7.4 Determination of changes in properties after exposure 8 Exposure report <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | (informative) Xenon-arc lamp apparatus (informative) Xenon-arc lamp apparatus Apparatus with air-cooled xenon-arc lamps Description and conditions of use <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Temperature and humidity control Apparatus with water-cooled xenon-arc lamps Description and conditions of use <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Temperature and humidity control <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Plastics. Methods of exposure to laboratory light sources – Xenon-arc sources<\/b><\/p>\n |