© Apollo Fire Detectors Limited 2005-2008
0786
FUNCTION
The intelligent refl ective beam detector is a compact
detector for detecting smoke in large open areas such
as atria, warehouses, theatres and churches. It also
has a built-in 20D negative bi-directional short circuit
isolator.
The transmitter and receiver form a single unit
mounted to a wall of the building. A refl ector which
returns the IR beam from the transmitter to the
receiver is mounted on the opposite wall. In the event
of smoke partially obscuring the light an imbalance
between the transmitted and received light will occur.
On interrogation by the control panel the detector will
then transmit an alarm value.
The intelligent refl ective beam detector is an addition
to the Apollo range and not a replacement for the
XP95 loop-powered beam detector.
FEATURES
The intelligent refl ective beam detector is supplied in
two versions: one for use at distances of 5–50m from
detector to refl ector and the other for distances of
50–100m.
The detector is factory set to a beam obscuration of
35% which is the best setting for most factories and
warehouses. The setting can be changed to 25% for
offi ces and clean areas such as theatres or to 50% for
hostile areas such as mills or foundries.
The detector compensates automatically for gradual
contamination of the lenses in order to avoid false
alarms.
The detector is non-latching and resets 30 seconds
after an alarm event ceases and in 3 seconds after the
removal of a fault.
A termination backbox, part no 29600-241, is available.
This allows easy fi rst fi xing of the cabling and termina-
tions to the intelligent refl ective beam detector. The
termination backbox can be surface or fl ush mounted.
PP2155/2008/Issue 3
INTELLIGENT REFLECTIVE
BEAM DETECTOR
Part nos 55000-268 (5–50m)
55000-273 (50–100m)
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