15 | GE Oil & Gas
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Accessories
The following Accessories are available to enhance the
operation or provide additional features to your VRP-B-CH
Series Double-Acting Pilot Control System. For additional
information regarding a specific VRP-B-CH accessory,
please contact GE.
SP Series Set Point Change
Pump:
Provides a simple and accurate
method of applying false signal
pressure during initial adjustment of
the VRP pilot. The pump can provide
a false signal pressure of 20%-50%
in excess of working pipeline
pressure which eliminates the need
for nitrogen bottles or electronic
calibration devices.
Remote Set Point Module:
Provides remote adjustment of VRP-
B-CH Pilot set point via an electrical
signal. Standard input signals are 24
VDC pulse and 120 VAC pulse. A 4-20
mA input signal motor is optional.
All motors provide 4-20 mA setpoint
feedback.
AB Series Atmospheric
Bleed Control:
Maintains minimum pressure
differential across the cylinder.
AB Control is required to provide
the necessary output to operate
the control valve under all design
conditions.
Note: See Page 6 for adjustment
information.
NBV Series No Bleed Valve:
Achieves non-bleeding conditions
at both full open and full closed
positions without any adjustment.
Selection based upon power
gas pressure and discharge gas
pressure.
DPS-2 Series Sensor Adjustments
1. Turn the adjusting screw of the DPS-2 sensor clockwise until it
extends about 1-3/4” from the top of the spring cartridge.
2. Adjust the VRP-B-CH according to the pilot adjustment
procedures.
For a normally open regulator (Monitor):
3. Bleed off the sensing pressure.
4. Wait until the pressure reading on the cylinder bottom gauge
is zero.
For normally closed (standby) regulator:
3. Increase the sensing pressure 5 percent above setpoint.
4. Wait until the pressure reading on the cylinder top gauge is
equal to zero.
5. Turn the adjusting screw of the DPS-2 sensor counterclockwise
until the exhaust port of the VRP-B-CH stops bleeding gas.
Then turn the adjusting screw an additional half turn in the
same direction.
6. The pressure sensor is now set for the existing supply
pressure. If the supply pressure to the VRP-B-CH is changed,
the sensor must be reset.
DPS Series Non-Bleed
Sensor:
achieves non-bleeding conditions
in either full open or full closed
positions. Selection based upon
power gas pressure and discharge
gas pressure.
Note: See Page 6 for initial pilot
adjustment information.
