ΟγΈΫΑωΊΟ²ΚΏͺ½± 7240-12:2022
2022-06
ΟγΈΫΑωΊΟ²ΚΏͺ½± 7240-12:2022
Abstract
This document specifies requirements, test methods and performance criteria for line-type smoke detectors for use in fire detection systems installed in buildings. The detectors consist of at least a transmitter and a receiver and can include reflector(s) for the detection of smoke by the attenuation and/or changes in attenuation of an optical beam.
This document is not applicable to:
βΒ Β Β line-type smoke detectors designed to operate with separations between opposed components of less than 1Β m;
βΒ Β Β line-type smoke detectors whose optical path length is defined or adjusted by an integral mechanical connection;
βΒ Β Β line-type smoke detectors with special characteristics, which cannot be assessed by the test methods in this document.
NOTEΒ Β Β Β Β The term βopticalβ 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.
General information
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Status: PublishedPublication date: 2022-06Stage: International Standard published [60.60]
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Edition: 3Number of pages: 53
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Technical Committee :ΟγΈΫΑωΊΟ²ΚΏͺ½±/TC 21/SC 3ICS :13.220.20
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