A proportional controller is being used to control the water level in a tank.
When the tank water level matches the controller setpoint of 50 percent, the controller output signal is 50 percent.
Tank water level begins to rise and the controller stabilizes the water level at 60 percent, at which time the controller output signal is 90 percent.
What is the offset for this controller at the 60 percent tank water level?
A. 10 percent
B. 30 percent
C. 40 percent
D. 67 percent
Show Answer
Answer: A
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