Becker VRP-SB-PID Series

Description:

The Becker Model VRP-SB-PID is a three mode, proportional-integral-derivative, controller providing pressure control when utilized with a spring & diaphragm actuated control valve or in tandem with a pneumatic positioner. The VRP-SB-PID measures process sensing pressure adjusting the signal to the positioner or actuator to maintain the pressure setpoint. The VRP-SB-PID Controller may be utilized for short pressure control applications such as power plant regulation with setpoints ranging from inches WC to 1300 psig. A feedback module is added to the VRP-SB-CH design allowing the controller to respond in quickly and avoid cycling of the pressure system. The VRP-SB-PID features zero steady state bleed and can take a back-pressure.

• The VRP-SB-PID Sensing Pressure and the Control Spring are combined in the same �CH� combined chamber so that only the �net force� in transmitted to the VRP-SB-PID Pilot Body.
• VRP-SB-PID Pilot Sensitivity improved to �0.75%.
• The VRP-SB-PID control spring is totally enclosed and protected from potentially corrosive effects of the atmosphere.
• The New VRP-SB-PID design provides for substantially reduced number of models available. This makes selection and support of VRP-SB-PID Pilots easier.
• The New �CH� combined chamber is identical in design for all Becker VRP Pilots. Additionally, new control spring designs provide for wider setpoint range for one spring and greater sensitivity.
• The increased volume of the VRP-SB-PID combined chamber

• Power Plant Type Pressure Control
• Two-Stage Pressure Cuts
• Short System Pressure Control

Setpoint Range: Inches WC to 1300 psig

Alternate Models:

• Gap Controller (on-off service)

• Stainless Steel construction

Action:

• Direct Acting (Increasing output signal on increasing sensing pressure)
• Reverse Acting (Decreasing output signal on increasing sensing pressure)
• Field reversible

Bleed Rates (Consumption)
Steady State Bleed*	<10
Non-Bleed Full-Open/Full Closed	Y
Bleed to Pressure System (BPS�)	Y

VRP-SB-PID Controller

VRP-SB-PID Technical Specifications
Minimum Deadband	0.2% instrument signal
Independent Linearity	�1.0% positioning range
Resolution	0.2% of setpoint
Control Accuracy	� 0.75% of setpoint
Setpoint Range	25 psig � 1300 psig (172 kPa � 8966 kPa)