Photoelectric Light Obscuration Smoke Detection 2
Photoelectric Light Obscuration Smoke Detection 2 :
The principle of utilizing a light source and a photosensitive sensor onto which the principal portion of the source emissions is focused. When smoke particles enter the light path, some of the light is scattered and some is absorbed, thereby reducing the light reaching the receiving sensor. The light reduction signal is processed and used to convey an alarm condition when it meets preset criteria. The response of photoelectric light obscuration smoke detectors is usually not affected by the color of smoke. Smoke detectors utilizing the light obscuration principle are usually of the line type. These detectors are commonly refereed to as "projected beam smoke detectors"
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