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Note: This document is based on the recommendatio ns of BS5839 Part 1: 2002. I t is intended only as a guide to the ap plication of fire detection systems.
Reference must be made to relevant national and local stan dards.
6500 AND 6500S BEAM DET ECTOR
The 6500S and 6500 are addr essable reflector- type linear
optical beam smoke detectors that can b e directly connected
to an analogue loop circuit as a component of a n intelligent
fire alarm system. The detectors have a r ange of 5m to 70m,
extending to 100m with a long-range refle ctor kit.
The 6500S and 6500 detec tors are combined transmit ter/
receiver units. The Infrared tra nsmitter generates a beam of
light towards a high efficiency reflec tor. The reflector returns
the beam to the receiver where an analysis of th e received
signal is made. The change in the strength of th e received
signal is used to determine the alarm conditi on.
The 6500S features a unique remot e test capability that fully
tests both the optics and the elect ronics of the device. An
optical filter is automatically intro duced in front of the optics,
attenuating the returned beam and c ausing the unit to go into
alarm.
Both versions incorporate automa tic drift compensation,
whereby the detector will adjust its det ection thresholds in
line with any long-term signal reduction of t he beam caused
by contamination of the optical surf ace.
The 6500 and 6500S also inclu de built in short circuit isolator s
(which may be wired out if required) , reducing the number of
isolators required in the detection c ircuit.
Tested and approved to EN54-12: 2002
Specifications
Voltage Range: 15 to 32VDC,
or 15 to 28.5VDC if isolators used.
Standby Current: 2mA at 24VDC (no communications )
Max Alarm Current: 8mA
Temperature Range: -30°C to 55°C
Humidity: 0 to 95% RH (Non-Condensin g)
IP Rating: IP54
Detector Dimensions: 254mm x 190mm x 84mm (h x w x d)
Reflector Dimensions: 200mm x 230mm (for 5 -70m)
Weight: 1770g
System Sensor Intelligent Product Range
REMOTE TEST SWITCH
In the conventional version of the beam dete ctor, an
optical filter is activated from gro und level by a hard-wired
connection; in the addressable m odel it is initiated by a
command from the fire control panel to the s ervo motor.
The filter attenuates the beam, causin g the unit to go into
alarm. This test process provides a comp lete check of every
component in the alarm path without the nee d for access at
high level.