ISO 7240-32:2025

This document applies to non-resettable line-type heat detectors consisting of a sensing element distributed either continuously or discretely at close intervals along its length, which can be connected either directly or through a sensor control unit or an interface module to control and indicating equipment, and intended for use in fire detection and fire alarm systems installed in and around buildings and other civil engineering works. This document specifies requirements and performance criteria, and the corresponding test methods and provisions for assessment. This document also covers non-resettable line-type heat detectors intended for use in the local protection of plant (facility) and equipment. Non-resettable line-type heat detectors with special characteristics and developed for specific risks are not covered by this document.