67
7 Operation
Frequency Range
With selection problems in particular, you could also adjust the frequency settings. Normally,
a high frequency reduces the sensitivity against the background radiation. As displayed on the
bar, you can see which one of the frequency ranges has sufficient flame radiation available
with the selected settings and can choose one of these.
You will find more information on the values in the following table:
Icon Name Value Explanation
05:
Switch-off
level
0 ... 2500 mV Switching threshold "flame OFF"
06:
Frequency
range
*
10 ... 160 Hz
5 ... 80 Hz
* See the frequency ranges in section 7.3.3.2 Signal simulator
Lower limit frequency as of which the signal
is analysed.
04:
Frequency
band
S, T Frequency band
S = standard
T = low frequency
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