Description
Apollo Discovery Marine Optical Smoke Detector – 58000-600MAR
The Discovery Marine Optical Smoke Detector works using the light scatter principle and is ideal for applications where slow-burning or smouldering fires are likely.
Operating Principles
The Discovery Marine Optical Smoke Detector has a white moulded polycarbonate case with wind-resistant smoke inlets.
The indicator LEDs are colourless when the detector is in quiescent state and red in alarm. Within the case is a printed circuit board which, on one side, has the light-proof chamber with integral gauze surrounding the optical measuring system and, on the other, the signal processing and communications electronics.
An infra-red light emitting diode within its collimator is arranged at an obtuse angle to the photo-diode. The photo-diode has an integral daylight-blocking filter.
The IR LED emits a burst of collimated light every second.
In clear air the photo-diode receives no light directly from the IR LED, because of the angular arrangement and the chamber baffles. When smoke enters the chamber it scatters light from the emitter IR LED onto the photo-diode in an amount related to the smoke characteristics and density. The photo-diode signal is processed to provide an analogue value for transmission when the detector is interrogated.
Maintenance & Service
Detectors should be maintained according to BS 5839-1 or other locally applicable code. Test Equipment can be ordered from us which can test smoke and heat detectors. Detectors should not be cleaned in the field except for careful removal of exterior dirt with a damp cloth.
Key Features:
Responds well to slow-burning, smouldering fires
Suitable for bedrooms and escape routes
Unaffected by wind or atmospheric pressure
Remote test feature
Rejection of transient signals
