GE Becker VRP-SB-PID Series User manual

GE Oil & Gas
Becker*
VRP-SB-PID Series
Natural Gas Controllers
Instruction Manual
GE Data Classification : Public

Becker VRP-SB-PID Series Natural Gas Controllers Instruction Manual | b
© 2016 General Electric Company. All rights reserved.
THESE INSTRUCTIONS PROVIDE THE CUSTOMER/OPERATOR WITH IMPORTANT PROJECT-SPECIFIC
REFERENCE INFORMATION IN ADDITION TO THE CUSTOMER/OPERATOR’S NORMAL OPERATION
AND MAINTENANCE PROCEDURES. SINCE OPERATION AND MAINTENANCE PHILOSOPHIES VARY,
GE (GENERAL ELECTRIC COMPANY AND ITS SUBSIDIARIES AND AFFILIATES) DOES NOT ATTEMPT TO
DICTATE SPECIFIC PROCEDURES, BUT TO PROVIDE BASIC LIMITATIONS AND REQUIREMENTS CREATED
BY THE TYPE OF EQUIPMENT PROVIDED.
THESE INSTRUCTIONS ASSUME THAT OPERATORS ALREADY HAVE A GENERAL UNDERSTANDING OF THE
REQUIREMENTS FOR SAFE OPERATION OF MECHANICAL AND ELECTRICAL EQUIPMENT IN POTENTIALLY
HAZARDOUS ENVIRONMENTS. THEREFORE, THESE INSTRUCTIONS SHOULD BE INTERPRETED AND
APPLIED IN CONJUNCTION WITH THE SAFETY RULES AND REGULATIONS APPLICABLE AT THE SITE
AND THE PARTICULAR REQUIREMENTS FOR OPERATION OF OTHER EQUIPMENT AT THE SITE.
THESE INSTRUCTIONS DO NOT PURPORT TO COVER ALL DETAILS OR VARIATIONS IN EQUIPMENT NOR
TO PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN CONNECTION WITH INSTALLATION,
OPERATION OR MAINTENANCE. SHOULD FURTHER INFORMATION BE DESIRED OR SHOULD PARTICULAR
PROBLEMS ARISE WHICH ARE NOT COVERED SUFFICIENTLY FOR THE CUSTOMER/OPERATOR’S
PURPOSES THE MATTER SHOULD BE REFERRED TO GE.
THE RIGHTS, OBLIGATIONS AND LIABILITIES OF GE AND THE CUSTOMER/OPERATOR ARE STRICTLY
LIMITED TO THOSE EXPRESSLY PROVIDED IN THE CONTRACT RELATING TO THE SUPPLY OF THE
EQUIPMENT. NO ADDITIONAL REPRESENTATIONS OR WARRANTIES BY GE REGARDING THE EQUIPMENT
OR ITS USE ARE GIVEN OR IMPLIED BY THE ISSUE OF THESE INSTRUCTIONS.
THESE INSTRUCTIONS ARE FURNISHED TO THE CUSTOMER/OPERATOR SOLELY TO ASSIST IN THE
INSTALLATION, TESTING, OPERATION, AND/OR MAINTENANCE OF THE EQUIPMENT DESCRIBED. THIS
DOCUMENT SHALL NOT BE REPRODUCED IN WHOLE OR IN PART WITHOUT THE WRITTEN APPROVAL
OF GE.

1 | GE Oil & Gas © 2016 General Electric Company. All rights reserved.
Introduction
GE’s Becker VRP-SB-PID series Natural Gas Controller
represents a breakthrough in pressure control technology for the
natural gas industry. Built to exacting specifications, this easily
maintained unit offers highly accurate control in a broad range
of operating environments. In addition to minimizing bleed gas,
the VRP-SB-PID series controllers are designed such that their
bleed gas can be routed to a lower pressure fuel gas system,
eliminating atmospheric bleed gas completely. The elimination
of this expensive bleed gas ultimately saves a significant
amount of money for the operating company and reduces
the environmental impact of atmospheric hydrocarbons,
and diminishing natural resources.
Your VRP-SB-PID controller will come factory adjusted for
your particular application. The use of the adjustment
procedures in this manual will only become necessary upon
installation of a rubber goods replacement kit, or any other
disassembly or reassembly of the controller.
Description
The Becker VRP-SB-PID is a proportional-integral-derivative
controller. This concept will be further explained in the
operations section of this manual. The VRP-SB-PID can
operate as a controller working in tandem with a positioner.
It can also operate as a high-pressure controller, controlling
a single acting actuator without the need for a positioner.
Another advantage of the VRP-SB-PID is its versatility.
With a few adjustments the VRP-SB-PID can be transformed
into a proportional plus derivative controller or VRP-SB-PD.
In VRP-SB-PD mode the controller can be used for highly
unstable systems for example, double stage cuts.
Table of Contents
Page Page
Introduction......................................................................................................... 1
Description........................................................................................................... 1
Scope of this Manual.......................................................................................... 2
Technical Assistance.......................................................................................... 2
Technical Information........................................................................................ 2
Principles of Operation...................................................................................... 4
Control Spring Range Selection for VRP-SB-PID Controllers.................6
Conversion to VRP-SB-PD Controller: ...............................................................9
Control Spring Range Selection for VRP-SB-PD Controllers ............... 10
PID-40, PID-80, PID-125 Explanations........................................................... 11
Adjustment Procedure.....................................................................................11
Applications.......................................................................................................13
Power Plant Control Station with Start-up/Trimming Regulator .... 14
Power Plant Station with Globe Style Control Valve............................... 15
Power Plant Station with T-Ball Style Control Valve .............................. 16
Power Plant Station with Globe Style Control Valve
and Globe Valve Trim............................................................................................ 17
Power Plant Station with Globe Style Control Valve ............................. 18
Fuel Regulator to Compressor Turbine......................................................... 19
Double Stage Cut with Working Monitor &
Two Proportional Controllers Only.................................................................. 20
Annual Maintenance Checklist ......................................................................21
Parts Lists and Part Numbers .......................................................................22
Accessories ........................................................................................................27
Assembly Manual..............................................................................................28
Top Body Assembly ............................................................................................... 28
Bottom Body Assembly ....................................................................................... 28
Top Body Piston Assembly ................................................................................ 30
Bottom Body Piston Assembly ......................................................................... 30
Top Body Diaphragm Assembly ...................................................................... 31
Bottom Body Diaphragm Assembly .............................................................. 31
Sensitivity Drum Assembly ................................................................................ 32
Centering the Diaphragms ................................................................................ 33
Sensitivity Spacer Assembly ............................................................................. 34
Bottom Cap Assembly ......................................................................................... 35
Bracket Mounting .................................................................................................. 36
Diaphragm Assembly #1 .................................................................................... 37
Diaphragm Assembly #2 .................................................................................... 37
Diaphragm Assembly #3 .................................................................................... 37
Spring Support Plate Assembly ....................................................................... 38
Feedback Chamber Assembly ......................................................................... 38
Spring Cartridge Assembly ................................................................................ 40
Adjusting Screw Assembly ................................................................................ 42
Spring Chamber Assembly ................................................................................ 43
Cap Assembly .......................................................................................................... 45
Appendix A - List of Recommended Tools....................................................47
Appendix B - Parts Silhouettes.......................................................................48
Bolts and Washers ................................................................................................. 48
Washers and Nuts.................................................................................................. 49
Diaghragm ................................................................................................................. 50
O-Rings......................................................................................................................... 51

Becker VRP-SB-PID Series Natural Gas Controllers Instruction Manual | 2© 2016 General Electric Company. All rights reserved.
Scope of this Manual
This manual provides information on operation principles,
applications, installation, adjustment, and maintenance of the
VRP-SB-PID. For information concerning actuators, valves, and
accessories, refer to the instruction manuals provided with the
specific product.
Note: Only those qualified through training or experience should
install, operate, or maintain Becker controllers. If there are any
questions concerning these instructions, contact your sales
representative, sales office, or manufacturer before proceeding.
Technical Assistance
Should you have any questions, please contact your local GE sales
representative or technical assistance at:
GE Oil & Gas
Attn: Becker Control Valves Technical Assistance
12970 Normandy Boulevard
Jacksonville, FL 32221
USA
Tel. +1-844-VALVE-GE
www.geoilandgas.com/valves
Technical Information
Table 1: Technical Specifications
Technical Specifications
Maximum Control
Pressure
1500 psig
10,342 kPa
Power Gas Requirements Dry, filtered (40 micron) gas. Sufficient
pressure to operate positioner or actuator
Power Gas Maximum
Pressure
40, 80, 125 psig
Bleed to Pressure System
(BPS)
25 psig maximum
Output Signal Three models are available depending
on the maximum power gas pressure.
40, 80 and 125 psig.
Output Capacity 1.5 Cv maximum
Action Direct and reverse acting
Control Accuracy 3/4% of setpoint pressure
Resolution 0.2% of setpoint pressure
Operative Ambient
Temperature Range
-20°F to 160°F
-29°C to 71° C
Steady State Gas
Consumption
Zero
Approximate Weight 20 pounds
9kg
Pressure Connections 1/4 inch female NPT
Housing Meets NEMA 3 Classification (Weather
tight)
Installation Orientation Controller should be installed in the
vertical position
Model Number
The VRP-SB-PID model number is an alphanumeric combination,
which characterizes your specific unit. This number can be found
on the name tag located on the spring cartridge.
Example: VRP-600-SB-PID-40
VRP = Valve Regulator Pilot/Controller
600 = Maximum allowable control pressure
SB = Single Acting
PID = Proportional, Integral, Derivative Control
40 = Maximum power gas
Each unit has a stainless steel control tag fastened under one
of the bolts of the spring cartridge. The range of the control
spring is stamped on the face side of the tag. The shipping date
and seven-character part number are stamped on the bottom
side of the tag.
Table 2: Materials of Construction
Materials of Construction
External Parts Anodized 2024 aircraft alloy aluminum(1)
Internal Parts 316 stainless steel and 2024 anodized aluminum
Springs Alloy Steel
Diaphragms Buna-N reinforced by nylon fabric
Seats and O-Rings Buna-N
Tubing 316 stainless steel
Fittings 316 stainless steel
Gauges 2-1/2 inch dial liquid filled stainless steel
connection w/stainless steel case
(1) All stainless steel external construction available.
Exterior or corrosion resistant coating also available.
Example
A. Typical spring + diaphragm actuator w/ Globe Valve.
Power gas = 40 psig max.
Typical bench set 11 to 23
BPS available up to 5 psig (fuel system or low
pressure distribution)
B. Typical spring + piston actuator.
Power gas = 150 psi max. with BPS = 25 psig max.

3 | GE Oil & Gas © 2016 General Electric Company. All rights reserved.
Figure 1 - Principles of Operation
Direct Acting VRP-600-SB-PID-40 (High Gain) Yellow Spring
“False Signal”
Needle Valve
Output
Orifice
(Derivative)
P4 P3
Output
Block
Valve
Sensing
Pressure
P1
P1 P2
P4 P3
P2
Metering Valve
(Integral)
Power
Gas
Top Balance Valve
In the case of a
decrease in sensing
pressure, the bottom
balance valve will open
and the controller will
bleed gas.
Figure 1B
Figure 1CFigure 1D
Figure 1A
Bottom Balance Valve
The arrows in Figure 1A represent
the steady state or “balanced”
condition where the spring force
and force on the sensing diaphragm
are equal. If the sensing pressure
increases, the net force on the
sensing diaphragm is down. If the
sensing pressure decreases, the
net force on the diaphragm is up.
When spring and sensing diaphragm
forces are equal to each other, the
controller is balanced, and at steady
state. In the additional diagrams (1C,
1D) the dynamics of balance valves
for a decrease in setpoint is shown.
A high gain controller uses small
rings (shown in Figure 1B). Middle
gain controllers use large rings
(shown below). Low gain pilots use
no rings.
The derivative function is
introduced by applying a
portion of the output signal to
the bottom of the feed-back
diaphragm. The orifice is
adjusted to ensure system
stability. The integral function
is introduced by applying a
portion of the output signal
to the top of the feedback
diaphragm. The metering valve
provides adjustability of reset
rate.
In the case of a decrease
in sensing pressure, the
top balance valve closes,
and cuts off the power
gas. Arrows in figures
1C and 1D represent the
direction of gas flow.

Becker VRP-SB-PID Series Natural Gas Controllers Instruction Manual | 4© 2016 General Electric Company. All rights reserved.
Principles of Operation
Direct Acting VRP-SB-PID Controller (Figure 2)
When the measured variable pressure (sensing pressure) is
equal to the setpoint, the net force on the sensing diaphragm
is zero. This is the equilibrium or “balanced” condition where the
sensing pressure that pushes down on the sensing diaphragm,
and the spring force that pulls up on the sensing diaphragm are
equal. From this position two possible scenarios can occur, the
sensing pressure can rise above or below the setpoint.
If the sensing pressure rises above the setpoint the net force
on the sensing diaphragm is downward. The bottom balance
valve will close. The top balance valve opens, increasing the
flow of power gas to the output port. The combination of these
actions creates a rise in output pressure. When the sensing
pressure falls below the setpoint the net force on the sensing
diaphragm is upward. Now the top balance valve will close.
The bottom balance valve opens, increasing the flow of
gas to the exhaust port. The combination of these actions
decreases the output pressure.
In order to control how much gas passes through the balance
valve, the output pressure is fed back to the bottom side of a
diaphragm within the feedback module. As the output pressure
increases, this feedback pressure closes the inlet balance valve.
As the output pressure decreases, this feedback pressure
decreases, closing the exhaust balance valve. This feedback
force is such that the output pressure will change proportionally
with the deviation of the sensing pressure from the setpoint,
which gives us a proportional response.
By restricting the flow of the output pressure to the bottom side
of the feedback diaphragm, a derivative function is introduced.
This is accomplished with an adjustable orifice that controls the
flow to the bottom side of the feedback diaphragm. This orifice
delays the feedback force, allowing the output to change quickly
in response to a quick change in the system. Slow changes in
the system; however, are less affected by the derivative orifice
because the output pressure has time to equalize on both sides
of the orifice. The adjustability of the orifice allows us to optimize
the system. If the restriction is too great, the feedback delay will
be too long and the system will become unstable.
It is already established that the change in output pressure
is proportional to the deviance of the sensing pressure.
Because of this, a sensing pressure that is not at the setpoint
is required to maintain a particular change in output pressure.
The difference between the setpoint and the maintained
pressure at a particular output pressure is the “offset”. This
offset can be eliminated over time by allowing the top side
of the feedback diaphragm to slowly equalize with the bottom
side. By using a metering valve to control the flow to the top
side of the feedback diaphragm we introduce our integral
function. This adjustment also allows us to optimize the system.
If the top side of the diaphragm equalizes with the bottom side
too quickly, the feedback function providing proportionality is
cancelled out and control will become unstable.
Reverse Acting VRP-SB-PID Controller (Figure 3)
In this case, the power gas is fed through the bottom balanced
valve instead of the top. The exhaust now vents from the top
balanced valve, and use of the feedback chamber is reversed.
This simply means that the adjustable orifice controls the flow
to the top feedback chamber, and the metering valve controls
the flow to the bottom feedback chamber.
If the sensing pressure rises above the setpoint then the net
force on the sensing diaphragm is down. The bottom balanced
valve will close. The top balanced valve opens, allowing gas
to vent through the exhaust port. The combination of these
actions results in a decrease in output pressure. If the sensing
pressure falls below the setpoint, the net force on the diaphragm
is upward. The bottom balanced valve opens, increasing the
flow of power gas to the output. The top balanced valve will
close. This combination creates a rise in output pressure.
As the name implies, the dynamics are completely “reversed”
from the direct acting configuration. The same can be said about
the feedback chamber dynamics. The output pressure is now fed
into the top side of the feedback diaphragm, while elimination of
the “offset” is accomplished by feeding the output pressure to
the bottom side of the feedback diaphragm.

5 | GE Oil & Gas © 2016 General Electric Company. All rights reserved.
Sensing
Pressure
Integral
Derivative
Output
Derivative
Integral
Output
Output
Block Valve
Exhaust
P2
4P3P
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

Becker VRP-SB-PID Series Natural Gas Controllers Instruction Manual | 6© 2016 General Electric Company. All rights reserved.
Control Spring Range Selection for VRP-SB-PID Controllers
Table 3 - Control Spring Range Selection for VRP-SB-PID-40
VRP-SB-PID
Model No.
Control Range
(pisg/kPa)
Spring Color
(Part
Number)
Proportional Band with 3-15 psig
(21-103 kPa) Output
Setpoint
Change per
Revolution of
Setpoint Screw
(psig/kPa)
Setpoint
Range Discreet
Remote Control
(SM-1100)
Setpoint
Range Analog
(4-20 mA)
Remote Control
(SM-1000)
No Rings Large
Rings
Small
Rings
VRP-600-SB-PID-40 35-60 psig
(241-414 kPa)
Gold
(25-8236)
51 pisg
(352 kPa)
36 psig
(248 kPa)
23 pisg
(159 kPa)
2.1 psig
(14.5 kPa)
11.6 psig
(80 kPa)
25 psig
(172 kPa)
45-135 psig
(310-931 kPa)
Beige
(25-8238)
7.4 psig
(51 kPa)
41 psig
(283 kPa)
90 psig
(631 kPa)
70-195 psig
(483-1345 kPa)
Burgundy
(25-8239)
11.3 pisg
(78 kPa)
62 psig
427 kPa)
125 psig
(862 kPa)
155-320 psig
(1069-2206 kPa)
Pink
(25-8240)
24 psig
(165 kPa)
132 psig
(910 kPa)
165 psig
(1138 kPa)
295-600 psig
(2034-4137 kPa)
Yellow
(25-1306)
85 psig
(586 kPa)
405 psig
(2792 kPa)
405 psig
(2792 kPa)
VRP-1000-SB-PID-40 115-300 psig
(793-2275 kPa)
Burgundy
(25-8239)
87 psig
(600 kPa)
61 psig
(421 kPa)
39 psig
(270 kPa)
19.2 psig
(132 kPa)
106 psig
(731 kPa)
215 psig
(1482 kPa)
260-540 psig
(1793-3723 kPa)
Pink
(25-8240
41 psig
(283 kPa)
226 psig
(1558 kPa)
280 psig
(1931 kPa)
500-1000 psig
(3447-6895 kPa)
Yellow
(25-1306)
143 psig
(989 kPa)
680 pisg
(4688 kPa)
680 pisg
(4688 kPa)
VRP-1500-SB-PID-40 800-1300 psig
(5654-8964 kPa)
Grey
(25-1562 87 psig
(600 kPa)
61 psig
(421 kPa)
39 psig
(270 kPa)
227 psig
(1565 kPa)
830 psig
(5723 kPa)
830 psig
(5723 kPa)
900-1500 psig
(6205-10342 kPa)
Violet
(25-8073)
276 psig
(1903 kPa)
930 psig
(6412 kPa)
930 psig
(6412 kPa)
Repair Kit #30-9301 for VRP-600
Repair Kit #30-9307 for VRP-1000/1500
Sample Controller Gain Calculation:
VRP-600-SB-PID-40, High Gain (Small Rings), Yellow Spring
Controller Gain (K) =Output Range(1) =12 psig =0.522
Proportional Band 23 psig
(1)Output Range 30 psig - 6 psig = 24 psig (165 kPa)

7 | GE Oil & Gas © 2016 General Electric Company. All rights reserved.
Table 4 - Control Spring Range Selection for VRP-SB-PID-80
VRP-SB-PID
Model No.
Control Range
(pisg/kPa)
Spring Color
(Part
Number)
Proportional Band with 6-30 psig
(41-207 kPa) Output
Setpoint
Change per
Revolution of
Setpoint Screw
(psig/kPa)
Setpoint
Range Discreet
Remote Control
(SM-1100)
Setpoint
Range Analog
(4-20 mA)
Remote Control
(SM-1000)
No Rings Large
Rings
Small
Rings
VRP-600-SB-PID-80
70-160 psig
(483-1103 kPa)
Beige
(25-8238)
102 pisg
(703 kPa)
72 psig
(496 kPa)
46 pisg
(317 kPa)
7.4 psig
(51 kPa)
41 psig
(281 kPa)
90 psig
(621 kPa)
95-220 psig
(655-1517 kPa)
Burgundy
(25-8239)
11.3 psig
(78 kPa)
62 psig
(429 kPa)
125 psig
(862 kPa)
180-345 psig
(1241-2379 kPa)
Pink
(25-8240)
24 pisg
(165 kPa)
132 psig
(910 kPa)
165 psig
(1138 kPa)
320-600 psig
(2206-4137 kPa)
Yellow
(25-1306)
85 psig
(586 kPa)
380 psig
(2620 kPa)
380 psig
(2620 kPa)
VRP-1000-SB-PID-80
155-370 psig
(1069-2551 kPa)
Burgundy
(25-8239)
174 psig
(1200
kPa)
122 psig
(841 kPa)
78 psig
(538 kPa)
19.2 psig
(132 kPa)
106 psig
(728 kPa)
215 psig
(1482 kPa)
300-580 psig
(2069-4000 kPa)
Pink
(25-8240)
41 psig
(283 kPa)
226 psig
(1558 kPa)
280 psig
(1931 kPa)
540-1000 psig
(3723-6895 kPa)
Yellow
(25-1306)
143 psig
(989 kPa)
680 pisg
(4516 kPa)
680 pisg
(4516 kPa)
VRP-1500-SB-PID-80
860-1300 psig
(5930-8964 kPa)
Grey
(25-1562) 87 psig
(600 kPa)
61 psig
(421 kPa)
39 psig
(270 kPa)
227 psig
(1565 kPa)
805 psig
(5550 kPa)
805 psig
(5550 kPa)
960-1500 psig
(6619-10342 kPa)
Violet
(25-8073)
276 psig
(1903 kPa)
905 psig
(6240 kPa)
905 psig
(6240 kPa)
Repair Kit #30-9301 for VRP-600
Repair Kit #30-9307 for VRP-1000/1500
Sample Controller Gain Calculation:
VRP-600-SB-PID-80, Low Gain (No Rings), Yellow Spring
Controller Gain (K) =Output Range(1) =24 psig =0.235
Proportional Band 102 psig
(1)Output Range 30 psig - 6 psig = 24 psig (165 kPa)

Becker VRP-SB-PID Series Natural Gas Controllers Instruction Manual | 8© 2016 General Electric Company. All rights reserved.
Table 5 - Control Spring Range Selection for VRP-SB-PID-125
VRP-SB-PID
Model No.
Control Range
(pisg/kPa)
Spring Color
(Part
Number)
Proportional Band with 40-70 psig
(276-483 kPa) Output
Setpoint
Change per
Revolution of
Setpoint Screw
(psig/kPa)
Setpoint
Range Discreet
Remote Control
(SM-1100)
Setpoint
Range Analog
(4-20 mA)
Remote Control
(SM-1000)
No Rings Large
Rings
Small
Rings
VRP-600-SB-PID-125
115-195 psig
(793-1345 kPa)
Beige
(25-8238)
127.5 psig
(879 kPa)
90 psig
(621 kPa)
57.5 psig
(396 kPa)
7.4 psig
(51 kPa)
41 psig
(281 kPa)
90 psig
(621 kPa)
130-225 psig
(896-1758 kPa)
Burgundy
(25-8239)
11.3 psig
(78 kPa)
62 psig
(429 kPa)
125 psig
(862 kPa)
215-380 psig
(1482-2620 kPa)
Pink
(25-8240)
24 psig
(164 kPa)
132 psig
(910 kPa)
165 psig
(1138 kPa)
355-600 psig
(2448-4137 kPa)
Yellow
(25-1306)
85 psig
(586 kPa)
345 psig
(2379 kPa)
345 psig
(2379 kPa)
VRP-1000-SB-PID-125
215-430 psig
(1482-2967 kPa)
Burgundy
(25-8239)
217.5 psig
(1500
kPa)
52 psig
(1051
kPa)
97.5 psig
(672 kPa)
19.2 psig
(132 kPa)
106 psig
(728 kPa)
215 psig
(1482 kPa)
360-640 psig
(2482-4413 kPa)
Pink
(25-8240)
41 psig
(283 kPa)
226 psig
(1558 kPa)
280 psig
(1931 kPa)
600-1000 psig
(4137-6895 kPa)
Yellow
(25-1306)
143 psig
(989 kPa)
620 pisg
(4275 kPa)
620 pisg
(4275 kPa)
VRP-1500-SB-PID-125
920-1300 psig
(6343-8964 kPa)
Grey
(25-1562) 217.5 psig
(1500
kPa)
52 psig
(1051
kPa)
97.5 psig
(672 kPa)
227 psig
(1565 kPa)
770 psig
(5309 kPa)
770 psig
(5309 kPa)
1020 -1500 psig
(7033-10342 kPa)
Violet
(25-8073)
276 psig
(1903 kPa)
870 psig
(5998 kPa)
870 psig
(5998 kPa)
Repair Kit #30-9301 for VRP-600
Repair Kit #30-9307 for VRP-1000/1500
Sample Controller Gain Calculation:
VRP-600-SB-PID-125, Low Gain (No Rings), Yellow Spring
Controller Gain (K) =Output Range(1) =30 psig =0.235
Proportional Band 127.5 psig
(1)Output Range 30 psig - 6 psig = 24 psig (165 kPa)