conventional fire systems are designed to work with two
pairs of wires per zone: one pair for detection devices
such as smoke detectors, heat detectors and manual call
points; the other for alarm devices such as bells, sounders
or strobes. By using different voltage bands for quiescent
and alarm states, AlarmSense® components can be connected
to the same pair of supply wires.
When powered and controlled by the AlarmSense®
two-wire fire panel, this reliable technology takes all
the complexity out of fire alarm system design, leading
to quicker, less expensive and more flexible installation.
Research shows an AlarmSense® two-wire system can achieve
up to 40% reduction of labour over a standard four wire
- Designed to comply with EN54 parts 2 and 4
- Installer-friendly design accommodates easy first fix
and straightforward maintenance
- Attractive flush or surface mountable plastic lid and
- Auxiliary remote, fire, fault and reset outputs
- ‘Class change’ and alert inputs
- Four conventional sounder circuits (for use with non-AlarmSense®
- Low quiescent current - for extended standby times with
- Intuitive user-friendly interface.
- Multiple indicators provide a comprehensive overview
of system status.
- Push button access code or keyswitch entry (dependent
on model purchased) to a wide range of Engineering functions,
- Selectable zone delay facility
- Zone test facility
- Coincidence (double-knock) facility
- Non-latching zones facility
- Comprehensive fault diagnostic facilities
- System expansion connections for up to eight two-wire
repeater panels and a range of Relay Output Cards
The AlarmSense® range comprises:
- Optical smoke detector
- Integrating optical smoke detector
- Two heat detectors
- Mounting base
- Manual call point
- Sounder base
- Sounder beacon base
- Alarm relay module
The sounder base is capable of local and
general alarms while the sounder beacon base enables compliance
with the Disability Discrimination Act (DDA).
COMPLIANCE WITH STANDARDS
The entire range has been designed to enable
compliance with BS 5839 Parts 1 and 6, EN54-5 and 7 for
heat and smoke detectors, EN54-3 for the sounder base and
sounder beacon base while the alarm relay complies with
WHY ALARMSENSE® IS THE IDEAL CHOICE
- The range offers many benefits to the installer and
end user including:Local and general alarm switching
- Reduced wiring costs
- Quick and simple installation
- False alarm reduction with "non-priority"
- Flexible system design
- RemovAlert head removal monitoring
- SynchroPulse technology for alarm synchronisation
- Failsafe operation of manual call points
- Detector and call points are identifiable and separately
Don't forget, AlarmSense® systems comply
with BS 5839 Part 1 making it ideal for sites where mixed
systems are required such as Houses in Multiple Occupation
(HMOs). For more information on using AlarmSense® in
HMOs, request a copy of Apollo's new Application Guide PP2260.
AlarmSense® sounders and manual call
points are fitted to the same zone as detectors. In quiescent
state the zone is powered at between 9 and 15 volts, nominally
12 volts, at which voltage only detectors and call points
operate. Sounders require 24V to operate.
When an alarm is detected on a particular
zone, the control panel increases the line voltage to 24V
on that zone, causing the sounders to produce a continuous
‘Evacuate' sound. Any voltage-sensitive output devices-
relay modules or other alarm devices-also operate.
When the voltage is increased to 24V, the
detector alarm current will reduce to 1.5mA. The detectors
are latched in alarm until they are reset by reducing the
voltage to less than 2V for greater than 1 second. Output
devices will de-activate each time the voltage is reduced
to 12V unless otherwise stated in their specification.
On other zones, where detectors have not
changed to the alarmstate, generation of the ‘Alert'
tone can be achieved by pulsing the supply voltage from
12V to 24V with Line 1 positive and the sounders configured
to continuous output. Pulse frequency is determined by the
control panel but a frequency of 1 second on, 1 second off,
is recommended for compliance with BS 5839 Pt1.
2 zone control panel
4 zone control panel
8 zone control panel
break glass unit (surface mounted)
optical smoke detector c/w base
fixed temperature heat detector (60°) c/w base
rate of rise heat detector c/w base
Base mounted electronic sounder (87-70db) 5mA
Base mounted electronic sounder/beacon (87-70db) 5mA
zone powered relay (resets on silence) 2 x 1A 30v rated