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.

Full details of the principles of operation and the electrical description are published in the XP95 Engineering Product Guide. XP95 I.S. detectors have the same operating characteristics as the standard versions.

Technical specification
General
Warranty
10 year
Applications
  • Escape routes
  • Hazardous areas
  • Medium to large buildings
  • Offshore platforms
  • Refineries
Fire Type
Slow burning, smouldering fires
Default Variant
No
Website Categories
  • SIL Approved Devices
  • Intrinsically Safe
  • Analogue Addressable
Website Specialist Applications
  • SIL Approved
  • Intrinsically Safe
  • Marine
  • Offshore
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
  • ESC
  • CPR
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)
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