Control Loop Diagrams

A loop diagram is a "roadmap" which traces process fluids by the system and designates variables which could disrupt the balance of the system.

DESCRIBE the operation of a control loop diagram involving the following parts:

a.         Controlled system

b.         Controlled elements

c.         Feedback elements

d.         Reference point

e.         Controlled output

f.          Feedback signal

g.         Actuating signal

h.         Manipulated variable

i.          Disturbance

 EXPLAIN how resistance, capacitance, and transportation time affect a control system's lag time.