ISO 7240-7:2011 Fire detection and alarm systems. Part 7: Point-type smoke detectors using scattered light, transmitted light or ionization

ISO, 2011. — 64 p. Second edition 2011-08-01.
ISO 7240 (all parts) specifies components of fire detection and alarm systems, requirements for their interconnection and installation and the performance, testing, and servicing of parts or of complete systems. It provides
- local and/or remote signals to organizations having authority to respond to fire alarms, and
- signals to initiate the operation of fire protection equipment and other systems.
This part of ISO 7240 specifies requirements, test methods and performance criteria for point-type smoke detectors that operate using scattered light, transmitted light or ionization, for use in fire detection and alarm systems installed in buildings (see ISO 7240-1). This part of ISO 7240 also covers point smoke detectors that incorporate more than one smoke sensor operating on these principles. Additional requirements and test methods for such detectors are given in Annex N.
For the testing of other types of smoke detectors, or smoke detectors working on different principles, this part of ISO 7240 can be used only for guidance. Smoke detectors with special characteristics, developed for specific risks, are not covered.