Description

This standard specifies the requirements, test methods and performance criteria for line smoke detectors utilising the attenuation and/or the change in attenuation of an optical beam, for use in fire detection systems installed in buildings.

Scope

BS EN 54-12:2002 specifies requirements, test methods and performance criteria for line smoke detectorsutilising 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:

• line smoke detectors designed to operate with separations between opposed components of less than 1 m
• 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.

Note: The term “optical” is used to describe that part of the electromagnetic spectrum produced by the transmitter to which the receiver is responsive; this is not restricted to visible wavelengths