Chapter 8
Moisture
Target
Figure 25 shows the effect of changing the Integral Gain. Integral Gain will act to increase the
water flow depending on the length of time that has passed. This can be used to correct the
addition when the moisture tails off after the initial water addition.
Moisture
Target
Figure 26: The effect of changing the Derivative Gain
The Derivative Gain only needs to be changed if there is overshoot on the target that settles as
the water is mixed in as shown in Figure 26.
Figure 25: The effect of changing the Integral Gain
Using Moisture Control
Hydro-Control VI Operators Guide HD0456 Rev 1.7.1
Too High
Correct
Too Low/
No Gain
Time
Too High
Correct
Too Low
Time
51
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