Project engineering
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Building Technologies 007004_k_en_--
Fire Safety & Security Products 16.04.2009
4.3.3 Neural fire detector FDOOT241-x (sensor mode 2, 'Smoke
detector')
This mode should be selected when fast temperature changes may occur which
are not caused by fire (e.g. radiant heaters, hot engines). In this sensor mode the
detector only reacts optically; this is comparable with a wide-spectrum smoke
detector. Thanks to a second optical sensor, however, it reveals a balanced
response behavior in relation to the different types of fire.
Robust (2):
This parameter set reacts to aerosols in a similar way as the neural fire detector
FDOOT241 in sensor mode 0 with the 'Robust' parameter set, without taking into
account the temperature.
Universal (1):
With 'Universal' the sensitivity and response time to aerosols are between 'Robust'
and 'Sensitive'.
Sensitive (3):
With regard to aerosols, this parameter set reacts in a way that is comparable to
'Fast Response' in sensor mode 0 without temperature influence.
No. Name Response time [s] Sensitivity
open fire / smoldering fire
[%/m]
0
1
Universal 50 2,3 / 8
2 Robust 80 2,3 / 8
1 Universal 50 2,3 / 8
3 Sensitive 30 1,6 / 5,6
1
= Delivery status; only selectable in collective operation and MS8 operation.
All parameter sets meet the criteria of standard EN 54-7.
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