Apollo Intelligent Reflective Beam Detector (50m) (55000-268APO)

The Apollo Intelligent Reflective 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 reflector 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.

Operation

The intelligent reflective beam detector 55000-268APO is for use at distances of 5–50m from detector to reflector.

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 offices 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 first fixing of the cabling and terminations to the intelligent reflective beam detector. The termination backbox can be surface or flush mounted.

Electrical Description

The intelligent reflective beam detector is loop-powered and requires no external power supply. Each beam detector draws approximately 5mA in quiescent and 9mA in alarm from the analogue addressable loop and, unless proven by calculation*, it is recommended that no more than ten beam detectors be powered from each loop.

Backward Compatibility

Please note, not all control panels support this beam detector. Please contact Apollo’s Technical Sales department for further information.