XP95 I.S. Optical Smoke Detector [SIL2]

55000-640SIL

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. At an angle to the LED is a photo-diode which, in clear air conditions, does not receive light directly from the LED. The detector transmits a clear air signal to the control panel. When smoke enters the labyrinth, light is scattered onto the photo-diode and the signal to the panel increases. The signal is processed by the electronic circuitry and transmitted to the control equipment in exactly the same way as in the case of the ionization smoke detector.

Responds well to slowburning, smouldering fires
Well-suited to escape routes
Unaffected by wind or atmospheric pressure

Technical specification

General	Warranty 10 year Applications Escape routes Hazardous areas Medium to large buildings Offshore platforms Refineries Fire Type Slow burning, smouldering fires
Mechanical	Colour White Sensor configuration Horizontal optical bench housing infra-red emitter and sensor, arranged radially to detect forward scattered light. Weight 105g Materials housing Polycarbonate Product diameter 100mm Detection principle Photo-electric light scattering. Product diameter 3.94in
Conformance	Approvals CPR MED
Electrical	Protocol voltage 5 to 9V peak to peak Protocol voltage (max) 9V Protocol voltage (min) 5V Quiescent current 340μA Quiescent current tested at 24V dc Polarity L1 & L2 are polarity sensitive
Environmental	Humidity (max) 95% RH Humidity (min) 0% RH Humidity Note no condensation or icing Humidity 0% to 95% (no condensation or icing)