Example
For tile water level control system described in Figure 7.20, the water level is at the required height when the linear control valve has a flow rate of 5 m3/h and the outflow is 5 m3/h. The controller output is then 50% and operates as a proportional controller with a gain of 10. What will be the controller output and the offset when tile outflow changes to 6 m3/h?