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|
| Conventional
Systems |
Conventional
systems are designed to give a basic zonal and alarm call to
occupants of a building.
Panels are standard or high specification and usually only go
up to 32 zones any bigger and an addressable would be far more
economical.
All systems installed by our company comply with BS5839Pt1 1988
including all current amendments.
Conventional fire detection and alarm systems consist of a central
control and indicating panel to which are connected one or more
trigger devices and two or more alarm sounders. The control
panel itself is also connected to a primary power supply and
a secondary standby supply. Each of the trigger devices - whether
manual call points, heat detectors or any other fire detectors
- will electrically change the circuit to which they are connected
when certain fire conditions are met. The control panel will
indicate the circuit on which the alarm has been raised and
will activate all the relevant alarm sounder circuits.
Conventional systems Alarm Sense Two Wire Technology
consists
of a number of radially-wired circuits, each connected to
devices within a separate area or zone of the building. The
equipment itself is less costly than using new technology
and is therefor suitable for smaller buildings.
|
| Addressable
Systems |
|
Addressable
Systems are capable of identifying signals from individual
detectors
and manual call points. They therefore have the advantage
of indicating the source of the fire signal more accurately
than conventional systems. Other performance advantages of
an addressable system will depend on the type of detector
and the capability of the control panel
|
| Why
install an intelligent fire alarm system |
|
|
Search
time is eliminated by use of panel text / print out location.
|
|
|
Each
loop is monitored every 4 seconds fire / fault / is registered
at panel
and printed out. |
|
|
Greater
flexibility of system with programming down to detector level.
|
|
|
Low cable cost all equipment on two wire loop. |
|
|
Computer
/ beam detectors / and graphic systems easily incorporated.
|
| |
|
| Features
|
|
|
Detectors,
call points and sounders on same 2 wires |
|
|
Sounders
can be wired to the same point as detectors |
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|
Call
points function when detectors removed |
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|
Detector and call point alarms identifiable |
|
Alarm
Sense Equipment
|
|
|
Optical
smoke detector |
|
|
Rate-of-rise
heat detector |
|
|
Thermally-enhanced
optical smoke detector |
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|
Manual
call point Sounder |
