5 | GE Oil & Gas
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Sensing
Pressure
Integral
Derivative
Output
Derivative
Integral
Output
Output
Block Valve
Exhaust
P2
4
P
3
P
P1
P4
P3
P2
P1
Feedback
Module
Power
Gas
Exhaust
Sensing
Pressure
Figure 2 - Direct Acting VRP-SB-PID
Figure 3 - Reverse Acting VRP-SB-PID