Planning
Establish flame detector arrangement
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Building Technologies
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Fire Safety
2018-06-28
4.1.3 Deceptive phenomena
When arranging the flame detector, take possible deceptive phenomena into
account and take appropriate measures. Deceptive phenomena which may
activate the flame detector and trigger a false alarm are listed below.
Direct and indirect solar radiation
Hot objects, such as hot motors
Arc welding
Moving parts between the flame detector and a hot object, such as air hoses
from the exhaust system in the motor test bed
Light from halogen lamps without protective glass
To prevent a false alarm, use an appropriate parameter set or use masks to hide
the deceptive phenomenon.
See also
2
Mask deceptive phenomena [ 35]
2
4.1.4 Examples of application
The flame detectors are installed in such a way that fires can be detected in spite
of possible obstacles such as airfoils from aircraft or cranes.
Figure 10: Flame detector in an aircraft hangar
Figure 11: Flame detector in a freight forwarding hall
