Klingenburg CERTO, Documentation, Page: 34 / 52

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Operation instructions controller
With the same control signal, the second CERTO controller may have its starting point set to 60%, for example. This
means the second pumping station and its nozzle system will only switch on at high humidifying power output. This
saves water and facilitates better control in the lower and middle humidifying range.
Humidity control
If “Humidity control” has been selected, the following display appears:
Here, the relative humidity the humidifier can achieve is set between 10 % and 95 %.
The PI-controller is activated duringhumidity control. This ensures that the set target value remains constant. The
Klingenburg humidity sensor is required for this purpose. The gain factor is set here.
Attention:
The value must not be set >1.0, since this could lead to strong sub-harmonics and harmonics.
This controls the reaction time of the control. The greater the time, the slower the control.
D e s i r e d h u m i t y
1 0 - 9 5 % 6 0 %
P - g a i n
0 , 2 - 5 , 0 0 0 1 , 0
I n t e g r a t o r t i m e
0 , 1 - 1 5 0 s
0 0 1 , 0
Target value range
Caution! Only change this setting if 1 humidifier is operated with 2 controllers. If one humidifier is operated in
parallel with 2 pumping stations and 2 controllers, the target value may be reduced in this function. Example: At
a setting of 70%, the CERTO will reach maximum humidity at just 7 volts of control signal. This can optimise the
transition to the 2nd controller.
Minimum frequency
The minimum frequency is factory set. The nozzle pressure should be set at a minimum of 5 bar in any humi-
dification situation. Changing this frequency means that humidification is not guaranteed but the humidifier is
operating all the same. Controllability is also compromised This setting value is calculated at the factory and
preset and checked during a trial run. Frequency range: 3-20 Hz. Changes can cause damage to the humidifier.
Target value range
S o l l w e r t b e r e i c h
M i n i m a l f r e q .
2 5 % - 1 0 0 % 0 0 1 0 0
3 - 2 0 H z 1 0 H z