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