标准编号：ISO 7240-12:2022
中文名称：火灾探测和报警系统 第12部分：采用传输光束的线型烟尘探测器
英文名称：Fire detection and alarm systems — Part 12: Line type smoke detectors using a transmitted optical beam
发布日期：2022-06
标准范围
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:
— line-type smoke detectors designed to operate with separations between opposed components of less than 1 m;
— line-type smoke detectors whose optical path length is defined or adjusted by an integral mechanical connection;
— line-type smoke detectors with special characteristics, which cannot be assessed by the test methods in this document.
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