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ČSN EN ISO 5659-2 (640150)
Plasty - Vývoj dýmu - Část 2: Stanovení optické hustoty v jednoduché komoře (Norma k přímému použití jako ČSN).
NORMA vydaná dňa 1.12.2017
Informácie o norme:
Označenie normy: ČSN EN ISO 5659-2
Rozlišovací znak: 640150
Katalógové číslo: 503389
Dátum vydania normy: 1.12.2017
Kód tovaru: NS-802328
Počet strán: 64
Približná hmotnosť: 192 g (0.42 libier)
Krajina: Česká technická norma
Kategória: Technické normy ČSN
Kategórie - podobné normy:
Zápalnost a hořlavost materiálů a výrobků
Plastické hmoty obecně
Anotácia textu normy ČSN EN ISO 5659-2 (640150):
This document specifies a method of measuring smoke production from the exposed surface of specimens of materials or composites. It is applicable to specimens that have an essentially flat surface and do not exceed 25 mm in thickness when placed in a horizontal orientation and subjected to specified levels of thermal irradiance in a closed cabinet with or without the application of a pilot flame. This method of test is applicable to all plastics. It is intended that the values of optical density determined by this test be taken as specific to the specimen or assembly material in the form and thickness tested and are not to be considered inherent, fundamental properties. The test is intended primarily for use in research and development and fire safety engineering in buildings, trains, ships, etc. and not as a basis for ratings for building codes or other purposes. No basis is provided for predicting the density of smoke that can be generated by the materials upon exposure to heat and flame under other (actual) exposure conditions. This test procedure excludes the effect of irritants on the eye. NOTE - This test procedure addresses the loss of visibility due to smoke density, which generally is not related to irritancy potency . It is emphasized that smoke production from a material varies according to the irradiance level to which the specimen is exposed. The results yielded from the method specified in this document are based on exposure to the specific irradiance levels of 25 kW/m2 and 50 kW/m2
Náhľad normy ČSN EN ISO 5659-2 (640150)
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