DP672 - Series 670 Intrinsically Safe Optical Smoke Detector

Description

The DP672 is an intrinsically safe, optical smoke detector and forms part of the 670 series of intrinsically safe conventional detector line.

The DP672 is regarded as particularly suitable for smouldering fires and escape routes as its performance is good in black as well as in white smoke. The device is designed to reduce the incidence of false alarms through over-sensitivity to transient phenomena significantly, and are therefore recommended for use as general purpose smoke detectors for early warning of fire in most areas.

Technical specs

Operation
 
 Sampling frequency
  Once every 4 s
Electrical
 
 Supply wiring
  2 wires, polarity sensitive
 Supply voltage
  14-28 VDC
 Minimum 'detector active' voltage
  12 VDC
 Minimum voltage to light alarm LED
  6 VDC
 Minimum holding voltage
  5 VDC
 Alarm reset voltage
  < 1 VDC
 Switch-on surge current
  105 µA @ 24 VDC
 Average quiescent current
  85µA @ 24 VDC
 Alarm load
  325 Ohm in series with a 1.0 V drop
 Remote output LED (-) characteristic
  4.7 kOhm connected to negative supply
 Power-up time
  < 20 s
 Alarm reset time
  1 s
Mechanical
 
 Material
  Moulded white polycarbonate.
 Alarm Indicator
  Integral indicator, 360° visibility
 Dimensions (dia x h)
  100 mm x 42 mm
 Weight
  75 g
Environmental
 
 Operating and storage temperature*
  -40°C to +70°C (no condensation or icing)
 Humidity
  0% to 98% RH (no condensation)
 Wind speed
  Unaffected
 Atmospheric pressure
  Insensitive
 IP rating
  23D
* Restrictions apply depending on operation class
 
 
 
  • Elegant slim-line design
  • EN54 and BASEEFA approved
  • Installer friendly design

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