Determine the manipulated variable, controlled variable,
and the measured variable given a description of various
typical industrial processes.

Answer Posted / a

PROCESS VARIABLE - Sensor O/P value in the form of 4-20ma
corresponds to Actual value after conditioning.(say level)

Example: Radar Lvl TX

SET VALUE - Required Process value to make the system
stable.

Example: Actual Tank lvl 100%
Required Lvl (to be maintain) 70%

MANIPULATED VARIABLE - Output Signal(4-20ma) required to
maintain the process variable near to setpoint.

Example: Control valve action to fill the tank.

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