A fire alarm system is a set of electric/electronic devices/equipment working together to detect and alert people through visual and audio appliances when smoke/fire is present. These alarms may be activated from smoke detectors, heat detectors, water flow sensors, which are automatic or from a manual fire alarm pull station.
The detection principle of an Addressable System (Fire Alarm System) is similar to a Conventional System except that the Control Panel can determine exactly which detector or call point has initiated the alarm. The detection circuit is p and multi devices may be connected to each loop. The detectors are essentially Conventional Detectors, with an address built in. The address in each detector is set by dil switches and the Control Panel is programmed to display the information required when that particular detector is operated. Additional Field Devices are available which may be oop for detection only i.e. it is possible to detect a normally open closing such as sprinkler flow switch, or a normally closed opening.
Sounders are imum of two sounder circuits exactly as a Conventional System. Loop Isolation Modules are available for fitting on to the detection loop/loops such that the loop is sectioned in order to ensure that a short circuit, or one fault will only cause.
Fire Alarm System comes with single loop as well as multi loops. It depends on requirement. The items which are integrated with Fire Alarm Systems are given below….
Devices(1) Smoke Sensor / Detector
(2) Heat Sensor / Detector
(3) Beam Detector
(4) Manual Call Point
(5) Response Indicator
(6) Input Module
(7) Monitor Module
(8) Sounder
Conventional Fire Alarm SystemIn a Conventional Fire Alarm System, a of call points and detectors are ire Alarm Control Panel in Zones. A Zone is a circuit and typically one would per floor or fire compartment. The Fire Alarm Control Panel has a of Zone Lamps. The reason for having Zones is to give a rough idea as to where a fire has occurred. This is important for the fire brigade and of course for the building management. The accuracy of knowing where a fire has started is controlled by the of Zones a Control Panel has and the of circuits that have been he building. The Control Panel is imum of two sounder circuits which could contain bells, electronic sounders or other audible devices. Each circuit has an end of ce which is used for monitoring purposes.
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