GE Becker VRP-SB-PID Series Instruction Manual page 7

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