The 860 series of smoke and heat detectors from Aritech are designed for the highest effectiveness by utilising the latest technology. The sensing part of the detector consists of two chambers - an open, outer chamber and a semi-sealed reference chamber within.
Optical smoke detectors incorporate a pulsing LED located in a labyrinth within the housing of the detector. The labyrinth is designed to exclude light from any external source. The heat detectors are resettable and operate by using a matched pair of thermistors to sense heat.
One thermistor is exposed to the ambient temperature, the other is sealed. In normal conditions, the two thermistors register similar temperatures, but, on the development of a fire, the temperature recorded by the exposed thermistor will increase rapidly, resulting in an imbalance of the thermistors and causing the detector to change to the alarm state.
For further details contact Brett Birch, Aritech on tel: (011) 805 1590.
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