Discovery Marine Ionisation Smoke Detector [SIL2]

58000-500MAR

The Discovery Ionisation Smoke Detector uses a low activity radioactive foil to detect fires by irradiating the air in the smoke chambers and causing a current flow.

Technical specification
General
Warranty
10 year
Applications
  • Bedrooms
  • Large vessels
  • Marine
  • Restaurants
Fire Type
Fast burning, flaming fires
Website Specialist Applications
  • Marine
  • Offshore
Mechanical
Colour
White
Sensor configuration
Twin compensating chambers using one single sided ionising radiation source.
Weight
105g
Materials housing
Polycarbonate
Materials terminals
Nickel plated stainless steel
Product length
42mm
Product diameter
100mm
Detection principle
Ionisation chamber.
Product length
1.65in
Product diameter
3.94in
Conformance
Standards
EN 54-7
Approvals
  • BV
  • DNV.GL
  • ABS
  • KRS
  • ESC
  • LR
  • MED
  • LPCB
  • CPR
Performance
Analogue value nominal
23
Analogue value (- tolerance)
4
Analogue value (+ tolerance)
0
Analogue value
23 +0/-4
Alarm level analogue value
55
Chamber type
Chevron
Electrical
Protocol voltage
5 to 9V peak to peak
Protocol voltage (max)
9V
Protocol voltage (min)
5V
Power-up surge current
1mA
Maximum power-up time
10 seconds
Quiescent current
300μA
Quiescent current tested at
24V dc
Terminal functions +R
+R Remote indicator positive connection
Terminal functions -R
-R Remote indicator negative connection
Polarity
L1 & L2 are polarity insensitive
Environmental
Humidity (max)
95% RH
Humidity (min)
0% RH
Humidity Note
no condensation or icing
Humidity
0% to 95% (no condensation or icing)
Operating temperature
-30 to 70°C
Operating temperature (max)
70°C
Operating temperature (min)
-30°C
IP rating Value
IP44
Effect of wind speed
Less than 20% change in sensitivity at speeds up to 10m/s
Operating temperature
-22 to 158°F
Operating temperature (max)
158°F
Operating temperature (min)
-22°F
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