EN 54-27 Fire detection and fire alarms systems – Part 27: Duct smoke detectors duct smoke detector fire detector that monitors the air in an air duct to detect smoke3.1.1 response threshold value aerosol concentration within the duct in the proximity of the specimen at the moment that it generates an alarm signal Note 1 […]
EN 54-27 Fire detection and fire alarms systems – Part 27: Duct smoke detectors