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What is claimed to be the first motorised beam detector compliant with American national standards for safety has been listed by Underwriters Laboratories. The Fireray 5000 from Fire Fighting Enterprises now has certification from UL in addition to LPCB, CPD & EN 54: 12.
The F5000 incorporates a newly-developed motorised beam head, which works in conjunction with the sensor to automatically optimise the signal strength throughout the life of the unit. This works to keep the beam aligned with the reflective prism even in the event of gradual building shift, and can also factor in environmental factors such as dust build up. These features strengthen false alarm immunity over time, says the company, and help to reduce the need for maintenance operations.
The Fireray’s low-level system controller is connected to the detector head by a two-wire cable, and can be used to fully control and adjust the beam – making installation significantly easier. The detector head houses both the transmitter and receiver, with the beam being bounced off a prismatic reflector on the opposite wall. Beam-type detectors are particularly suited to protecting wide indoor spaces such as warehouses, open-plan offices, corridors and meeting halls. By covering large areas with few units, costs and disruptions caused by installation and maintenance can be reduced, and systems can be designed to be less obtrusive.