614P Photoelectric Smoke Detector

The 614P is capable of detecting the visible smoke produced by materials which smolder or burn slowly, i.e. soft furnishings, plastic foam etc. or ‘smoke’ produced by overheated but unburnt PVC. These detectors are particularly suitable for general applications and areas where cable overheating may occur; electrical services areas. The novel design of the asymmetrical sampling chamber and signal processing techniques stop unwanted alarms caused by very small insects. Smoke entering
the sampling chamber scatters the infrared light pulses onto a photodiode. These pulses are converted to an electrical signal that is compared against a preset alarm level.