DIN EN 54-28:2011-04

This European Standard applies to non-resettable line type heat detectors consisting of a sensing element using an electrical sensor cable connected to a sensor control unit, either directly or through an interface module to a control and indicating equipment intended for use in fire detection and fire alarm systems installed in buildings and tunnels. The non-resettable sensing element has a fixed temperature alarm threshold and does not distinguish between short circuit and alarm condition. This standard also covers non-resettable line type heat detectors intended for use in the local protection of plants and machinery. Non-resettable line type heat detectors with special characteristics and developed for specific risks are not covered by this standard. This standard specifies the requirements and performance criteria. This standard specifies the corresponding test methods and the evaluation of conformity of the product to the standard.