Fire Detection Systems
Analogue Addressable Fire Detection, Conventional Fire Detection, Semi-Addressable Fire Detection system, full range of detectors including Smoke detectors, Multi-sensors, Manual Call Points, Sounders, Gas detectors, duct detectors, UV/Thermal detectors, flame proof detectors and all system modules and devices for controls, actuation of smoke-exhaust Fans/AHU/Ventilation etc.
CONVENTIONAL FIRE DETECTION SYSTEMS:
Conventional systems have been around for many years. Although the appearance of the system components has changed dramatically over the years, the system operation has not. Typically a building is sectioned into fire compartments (zones). Each zone will be protected by "conventional" detectors (smoke or thermal). Conventional detectors have two states, normal and alarm. Each zone is wired back to the fire indicator panel (FIP) separately.
Typically, zones have the following limitations:
-No more than 40 detectors.
-Protect an area no more than 2000m2.
-Protect no more than one floor.
The FIP has one appropriately labeled indicator per zone. When a detector is in the alarm state, the indicator illuminates. When the fire brigade observe the FIP, they can determine which zone the fire is in, but not which detector caused the alarm. Conventional systems have provided adequate protection for a long time. Even now these systems can be the most appropriate choice when factors like building services interfaces, life safety, risk, budget and end client requirements are taken into consideration.
ADDRESSABLE FIRE DETECTION SYSTEMS:
Addressable systems differ from conventional systems in the following ways:
-FIP has a LCD display so that plain English messages can identify detector location, instead of an LED indicator identifying zone location.
-Each detector has a unique address.
-Detectors are wired in a loop instead of terminating with an end of line device.
--Zones are sometimes used for convenience, but are not required.
-Keypads are used for control instead of discrete switches.
-High level interfaces can be used to communicate with other building services. Eg: Security System.