EN 54-12:2002
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Fire detection and fire alarm systems - Part 12: Smoke detectors - Line detectors using an optical light beam
31-12-2005
04-12-2002
This European Standard specifies requirements, test methods and performance criteria for line smoke detectors utilising the attenuation and/or changes in attenuation of an optical beam, for use in fire detection systems installed in buildings.This European Standard does not cover:¾ Line smoke detectors designed to operate with separations between opposed components of less than 1 m;¾ Line smoke detectors whose optical path length is defined or adjusted by an integral mechanical connection;Line smoke detectors with special characteristics, which cannot be assessed by the test methods in this European Standard.
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