MAN3041-1
12
6.4
Technical Data:
Specifications are typical and given at 23°C and 50% relative humidity unless specified otherwise.
Detector
operating
principle:
Photo electric detection of light scattered by smoke particles over a wide range
of angles. The optical management comprises an infra-red emitter with a prism
and photo-diode at 90° to the light beam with a wide field of view. The
detectors microprocessor uses algorithms to process the sensor reading.
The heat sensing element increase the sensitivity of the detector as the
temperature rises.
Sampling frequency:
Once every 4 seconds
Supply voltage:
14-28V dc
Supply wiring:
2 wires, polarity sensitive
Polarity reversal:
Not allowed
Power-up time:
<20 seconds
Minimum
detector
active voltage:
12V dc
Switch-on surge current:
105µA at 24V dc
Quiescent current:
85µA at 24V dc
Alarm load:
325
Ω
in series with 1.0V drop
Material:
Detector and base moulded in white polycarbonate
Alarm Indicator:
Integral indicator with 360° visibility
Dimensions and weight
of detector:
100mm diameter x 50mm H
80g
Dimensions and weight
inc base:
100mm diameter x 60mm H
140g
Operating and storage
temperature:
-40°C to +70°C
Operating temperature is restricted by the intrinsic safety gas classification.
Class T5: - 40°C to +40°C Class T4: - 40°C to +60°C
The detector must be protected from conditions of condensation or icing.
Humidity:
0% to 98% relative humidity (no condensation)
Wind speed:
Unaffected by wind
Atmospheric pressure:
Insensitive to pressure
IP rating:
23D to EN60529:1992*
Electromagnetic
compatibility:
The detector meets the requirements of BS EN61000-6-3 for emissions and BS
EN50 130-4 for susceptibility.
* The IP rating is not a requirement of EN54-7: 2000 since smoke detectors have to be open in order to
function. An IP rating is therefore not as significant as with other electrical products.
