Control systems and automation

Control systems and automation
A 5 to 20 bar reverse acting proportional pressure controller has an output
of 4 to 20 mA. The set point is 11 bar. Determine:
(a) the measured value pressure which gives an output of 15 mA when
the proportional band setting of the controller is 40%
(b) the proportional band setting which will give an output of 8 mA when
the measured value is 14 bar and the desired value is 11 bar.

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