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7 Instructions on Commissioning and Maintenance
7.1.4 Sensitivity - Switch
Depending on the model (F200K1 or F200K2), there are 1 or 2 sensitivity selector switches.
The sensitivity selector switches can be set in 6 steps. The switches are used to adapt the
device to the existing flame intensity. (refer to 7.2.4 Settings).
CAUTION!
The settings of the sensor sensitivity of the model F200K2 must carried out so that the sensi-
tivity in region II is higher than in the region I. Switch position I-5, I-6 overlaps with II-7, II-8.
7.1.5 Frequency - Switch
The frequency switches are only included in the F200K2 solution.
They are used to set the lower frequency limits of the digital filters. This allows to improve the
selectivity in flame detection. In the F200K1 solution, only the lower frequency limit of 10 Hz
is factory-set principally. (refer to chapter 7.2.4 Settings).
CAUTION!
In connection with the frequency setting is important to note that both channels (A and
B) ON and/or OFF mode switched on same position.
(refer to chapter 9.1.2 F200K2... (Ex-proof), in the State as Delivered )
7.1.6 Service - Switch Serv.
The Serv. service switch is issued to suppress the indication during start-up and starting time
of the flame detector. The flame detector is supplied with the Serv. switch in the ON position
as default. This function does not display any short flame signals of other radiation sources
(e.g. adjacent burners or background fire), which are not to result in a switch-on of the flame
detector.
For commissioning it is recommendable to set the Serv. switch to OFF. Short flame signal of
other sources are thus indicated even during the start-up phase. This information is important
for a probably required change of the start-up suppression setting (refer to chapter 7.2.4
Settings).
7.1.7 Adjust - Switch
The Adjust switch is issued to feed in the unevaluated flame intensity (i.e. the direct signal
at the probe element) to the intensity display of the compact flame detector. The activation of
the Adjust switch (ON position) suppresses the function of the Serv. switch (refer to 7.2.4 Set-
tings).
7.1.8 Start-up Suppression - Potentiometer
The potentiometer is issued to vary the setting of the start-up (switch-on) behaviour of the
flame detector. This setting has an influence on the switch-on behaviour of the flame detector
with regard to the flame to be monitored. (refer to chapter 7.2.4 Settings).
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