Structure and function
Function
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Building Technologies
007016_i_en_--
Fire Safety 2012-09-07
Leveling
The signal is measured four times per second and processed with leveling filters.
Extreme values, which may be caused by signal faults, are thereby leveled out.
Further signal processing is based on the leveled signal.
Leveling characteristics
1 Unleveled signal 2 Leveled signal
Time until alarm activation
The table below shows the time until alarm activation for various internal detector
diagnoses.
Internal detector diagnosis Time until alarm activation (typical value)
Normal or slow fire 6 s
Background noise or repeated open lines 16 s
Alarm test filter 10 s
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