The Opal addressable beam detector is an intelligent reflector type linear optical beam smoke detector designed to operate with Notifier addressable fire alarm systems. It operates primarily on the principle of light obscuration utilising infra-red light.
The Infra-Red transmitter generates a beam of light towards a high efficiency reflector. The reflector returns the beam to the receiver where an analysis of the received signal is made. The change in the strength of the received signal is used to determine the alarm condition.
Opal beam detectors are combined transmitter/receiver units, which can be directly connected to a Notifier Opal protocol addressable loop. The NFXI-BEAM-E is entirely loop powered without the need of a separate local power supply. The unique servo test feature of the NFXI-BEAM-TE requires 24Vdc @ 0.5A.
Each beam detector set is supplied with a reflector for up to 70 Metres measuring just 20cm x 23cm. A kit comprising of 3 additional reflectors is also available, extending the range to 100 Metres.
Alignment of the detector is simplified with the aid of the detector's "gunsight" targeting device. Alignment of the detector with the reflector can then be "fine tuned" with the aid of a numerical signal strength indicator.
The beam detector uses advanced algorithms to sample the environment and to adjust its sensitivity and alarm thresholds automatically. This provides optimum sensitivity within an unstable environment. The detector incorporates automatic drift compensation, whereby the detector will adjust its detection thresholds in line with any long term signal reduction of the beam caused by contamination of the optical surface.
Standby, fault and alarm LEDs visible from the front and bottom