Planning
Determine parameter set
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Building Technologies
007011_m_en_--
Fire Safety
2018-06-28
4.4 Determine parameter set
A parameter set can be used to set the flame detector perfectly to the ambient
features.
The individual parameter sets differ in terms of the following characteristics:
Detector sensitivity
Integration time
Resistance to deceptive phenomena
Detector sensitivity
The following detector sensitivities are available:
High
Satisfies class 1 according to EN 54-10
Normal
Satisfies class 2 according to EN 54-10
In accordance with EN 54-10, detectors are split into three classes depending on
the distance from which they can detect standard fires.
Class of detectors
Detector sensitivity
Detection distance
1
High
25 m
2
Normal
17 m
3
Normal
12 m
Table 1: Sub-division into classes of detectors according to EN 54-10
Integration time
The integration time determines how long the detector analyzes the signal for
before deciding whether an alarm should be activated. The following integration
times are available:
Very short: 1 second
Short: 3 seconds
Medium: 6 seconds
Very long: 12 seconds
The integration time is not the same as the response time.
Resistance to deceptive phenomena
Flame detector FDF241-9 has parameter sets which take account of the following
deceptive phenomena:
Direct solar radiation
Hot objects
Arc welding
