Question

The liquid level control system, where the liquid level is measured and the level transmitter output is sent to a feedback controller (LC) (level controller), is shown below. In the steady state, $h = 2$ m, $V = 1000$ L and $F_1 = 50$ L/min, as well as $G_v = 1$ and $G_m = 1$. $F_1$ h R * F_2 LT LC a) Draw the flow diagram of the system (process + control). In case the reference value is increased to 2.5 m; b) Find the offset for P control with $K_c$ value of 2. c) Find the offset for PI control with $K_c$ value of 2 and $\tau_I$ value of 1. d) Due to the malfunction in the controller, the P function does not work and therefore the controller only works as I. In this case, find the offset.

          The liquid level control system, where the liquid level is measured and the level transmitter output is sent to a feedback controller (LC) (level controller), is shown below. In the steady state, $h = 2$ m, $V = 1000$ L and $F_1 = 50$ L/min, as well as $G_v = 1$ and $G_m = 1$.
$F_1$
h
R
*
F_2
LT
LC
a) Draw the flow diagram of the system (process + control).
In case the reference value is increased to 2.5 m;
b) Find the offset for P control with $K_c$ value of 2.
c) Find the offset for PI control with $K_c$ value of 2 and $\tau_I$ value of 1.
d) Due to the malfunction in the controller, the P function does not work and therefore the controller only works as I. In this case, find the offset.

The liquid level control system, where the liquid level is measured and the level transmitter output is sent to a feedback controller (LC) (level controller), is shown below. In the steady state, h = 2 m, V = 1000 L and F1 = 50 L/min, as well as Gv = 1 and Gm = 1.
F1
h
R
*
F2
LT
LC
a) Draw the flow diagram of the system (process + control).
In case the reference value is increased to 2.5 m;
b) Find the offset for P control with Kc value of 2.
c) Find the offset for PI control with Kc value of 2 and value of 1.
d) Due to the malfunction in the controller, the P function does not work and therefore the controller only works as I. In this case, find the offset.

Added by Ashley F.

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