Fisher 2506 User manual

D200129X012
250 6 S eries Multi-Trol R eceiver/Controllers
(Type
s 2 506 , 2 516 , 2 516F)
Contents
Introduction 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting the Controller 2 . . . . . . . . . . . . . . . . .
Actuator Yoke Mounting 4. . . . . . . . . . . . . . . . . . . . . .
Wall Mounting 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Diaphragm Case Mounting 5. . . . . . . . . . . .
Pipestand Mounting 6. . . . . . . . . . . . . . . . . . . . . . . . . .
2500 Series Controller/Transmitter and
2506 Series Receiver/Controller Mounting 6. . . .
Connections 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply Connection 7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Connections 8. . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Connection 8. . . . . . . . . . . . . . . . . . . . . . . .
Vents 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Set Point Connection 9. . . . . . . . . . . . . . . . .
Startup 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustments 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Set Point Adjustment 10. . . . . . . . . . . . . . . . . . . . . . .
Remote Set Point Adjustment 10. . . . . . . . . . . . . . .
Proportional Band Adjustment 11. . . . . . . . . . . . . . .
Reset Adjustment
(Type 2516 Receiver/Controller Only) 11. . . . . .
Anti-Reset Windup Valve Adjustment
(Type 2516F Receiver/Controller Only) 11. . . . .
Calibration 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Principle of Operation 12 . . . . . . . . . . . . . . . . . .
Type 2506 Receiver/Controllers 12. . . . . . . . . . . . . .
Types 2516, 2516F Receiver/Controllers 13. . . . . .
Figure 1. T ype 2506 Multi-T rol

Receiver-Controller
W4687 / IL
Figure2. T ype 2516 Multi-T rol

Receiver-Controller
W4688 / IL
Instruction Manual
Form 1041
September 1993 Types 2506, 2516, 2516F

Types 2506, 2516, 2516F
2
Contents (Continued)
Maintenance 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing Controller Action 14. . . . . . . . . . . . . . . . . .
Troubleshooting 15 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing Relay Deadband 15. . . . . . . . . . . . . . . . . . . .
Replacing Receiver/Controller Parts 16. . . . . . . . . .
Bellows Replacement 16. . . . . . . . . . . . . . . . . . . . .
Changing the Relay 16. . . . . . . . . . . . . . . . . . . . . . .
Relay Assembly Maintenance 16. . . . . . . . . . . . . .
Changing Proportional or Reset Valve 17. . . . . . .
Parts Ordering 17. . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Kits 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver/Controller Common Parts 18. . . . . . . . . . .
Relay Assembly 20. . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-Reset Windup Valve for Type 2516F Only 22.
Type 2516F Reset and Anti-Reset Windup
Valve Assembly 22. . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Parts 22. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Yoke Mounting 22. . . . . . . . . . . . . . . . . . . . . . . . . . .
Wall Mounting 22. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Case Mounting 23. . . . . . . . . . . . . . . . . . . . . . . . . . .
Pipestand Mounting 23. . . . . . . . . . . . . . . . . . . . . . .
2500 Series Controller/Transmitter and
2506 Series Receiver/Controller Mounting 23.
Introduction
Scope of Manual
This manual provides installation, startup, calibration,
maintenance, and parts ordering information for Fisher
Controls 2506 Series Multi-Trol receiver/controllers.
Figure 1 shows a Type 2506 receiver/controller. Figure
2 shows a Type 2516 receiver/controller.
A 2506 Series receiver/controller is often used with a
Fisher Controls 2502 Series Level-Trolcontroller/
transmitter. For more information about 2502 Series
controller/transmitters or associated equipment such
as pressure regulators, sensors, accessories, or re-
lated control devices, see the appropriate instruction
manual. Contact your Fisher Controls sales office or
representative for applications assistance.
Only personnel qualified through training or experience
should install, operate, or maintain these receiver/con-
trollers and associated equipment. If you have any
questions concerning the instructions in this manual,
contact your Fisher sales office or sales representative
before proceeding.
Description
See table 2.
The receiver/controllers described in this manual pro-
vide:
DProportional-only control: Type 2506 (with snap
action: Type 2506S)
DProportional-plus-reset control (Type 2516)
DProportional-plus-reset-plus-anti-reset windup
control (Type 2516F)
See figures 9, 10, 11.
The receiver/controller takes a pneumatic input signal
from either a 2500 Series controller/transmitter or a
control device. The unit then provides a pneumatic
output signal that operates a final control element.
When a Type 2506 receiver/controller is used to pro-
vide proportional-only control, the pneumatic output
signal from the unit can also be piped to a remote re-
ceiving indicator or recording device. This provides a
visual indication of receiver/controller action.
The INCREASE OUTPUT PRESSURE adjustment is
used to increase or decrease the output pressure in
relationship to the input pressure. Changing this ad-
justment changes the position of the nozzle in relation-
ship to the beam/flapper assembly. In turn, the amount
of supply pressure released by the relay is changed
and the pneumatic output signal that operates a final
control element is affected.
If a remote set point signal is used, it is piped to the
remote set point connection and into remote set point
bellows. The remote signal expands the bellows and
moves the beam/flapper assembly. This affects the
controller output in the same way a change in the IN-
CREASE OUTPUT PRESSURE adjustment affects
the output.
Specifications
Specifications are shown in table 1.
Mounting the Controller
Note
Mounting Parts May Be Required
If a separate receiver/controller unit has
been ordered for field installation with
an existing valve/actuator assembly or
2500 Series controller/transmitter, addi-
tional mounting parts may be required.
In the parts list at the end of this manu-
al, find the mounting description. Then,
order any additional parts.

Types 2506, 2516, 2516F
3
Table1. Specifications
Available Configurations
For additional information, refer to table 2
Type 2506: A receiver/controller(1) that is set for
either proportional or snap action (S) control or for
either direct or reverse (R) action
Type 2516: A Type 2506 that also provides propor-
tional-plus-reset control
Type 2516F: A Type 2516 that also provides anti-
reset windup control
Input Signal Range(2)
From a transmitter or control device, a signal of 3 to
15 psig (0.2 to 1.0 bar) or 6 to 30 psig (0.4 to 2.0
bar) is required depending on receiver/controller
range. Refer to receiver/controller nameplate for
specific range
Output Signal Range(2,3)
See table 3
Output Action
Direct Action: An increasing fluid, interface level,
or density increases output pressure or,
Reverse Action: An increasing fluid, interface lev-
el, or density decreases output pressure
Remote Set Point Signal Range
From a control device, provide a remote set point
signal that is 3 to 15 psig (0.2 to 1.0 bar) or 6 to 30
psig (0.4 to 2.0 bar) that matches the receiver/con-
troller input signal range.
Supply Pressure(2)
Normal Operating Pressure: See table 3
Maximum Pressure to Prevent Internal Part
Rupture: 50 psig (3.4 bar)
Steady State Air Consumption(3)
See table 3
Proportional Band(2) Reset(2), and Anti-Reset
Windup
See table 2 and the Changing Controller Action pro-
cedure
Performance
Hysteresis: 0.6 percent of output pressure change
at 100 percent of proportional band for Type 2506
proportional receiver/controllers only
Standard Supply and Output Pressure Gauge Indi-
cations
See table 3
Standard Tubing Connections
All connections are 1/4-inch NPT female
Operative Ambient Temperature Limits
Standard: –40 to 160°F (–40 to 71°C)
High Temperature: 0 to 220°F (–18 to 104°C)
Approximate Weight
10 Pounds (4.54 kg)
1. Receiver/controllers are field adjustable between direct or reverse action. If the receiver/controller is set for reverse action at the factory, an R suffix will appear in the type number.
Receiver/controllers are field-adjustable between proportional and snap action.If the receiver/controller is set for snap action at the factory, an S suffix appears in the type number.
2. These terms are defined in ISA Standard S51.1-1979.
3. Scfh at 60°F, 14.7 psia (m3/hr at 0°C, 1.01325 bar absolute).
Table 2. Additional Information
Control Mode(1) Action (Full Output Change) Output Signal
Proportional control
(Type 2506) Proportional Band: Adjustable from 0 to 100% of transmitter signal.
3 to 15 psig
(0.2 to 1.0 bar) or
6 to 30 psig
(0.4 to 2.0 bar)
Snap action control
(Type 2506S) Snap Action: Control output is at 0 or 100% of input supply pressure. Switching depends on position of sensor and is adjustable.
0 to 20 psig
(0 to 1.4 bar) or
0 to 35 psig
(0 to 2.4 bar)
Proportional-plus-reset
control (Type 2516)
Proportional Band: Adjustable from 0 to 200% of transmitter signal. Recommended setting is
from 20 to 200%.
Reset: Adjustable form 0.01 to 74 minute per repeat with standard reset valve setting. 3 to 15 psig
Proportional-plus-reset with
differential relief control
(Type 2516F)
Proportional Band: Adjustable from 0 to 200% of transmitter signal. Recommended setting is
from 20 to 200%.
Reset: Adjustable from 0.01 to 74 minute per repeat with standard reset valve setting.
Differential Relief: Provides relief when output pressure falls or when output pressure rises
depending on valve adjustment.
3
to
15
sig
(0.2 to 1.0 bar) or
6 to 30 psig
(0.4 to 2.0 bar)
1. Proportional control is continuously active between 0 and 100 percent of the transmitter signal span. Differential gap provides snap action between 0 and 100 percent of the
transmitter signal. Do not use reset controllers in snap action.

Types 2506, 2516, 2516F
4
Table 3. Supply Pressure Data
OUTPUT SIGNAL
RANGE
STANDARD SUPPLY
AND OUTPUT
PRESSURE GAUGE
INDICATIONS(1)
NORMAL
OPERATING
SUPPLY
PRESSURE(2)
AIR CONSUMPTION AT
NORMAL OPERATING
SUPPLY PRESSURE
INDICATIONS
(1)
Psig Bar Minimum(3) Maximum(4)
3 to 15 psig (0.2 to 1.0 bar) 0 to 30 psig 20 1.4 4.2 scfh(5) 27 scfh(5)
6 to 30 psig (0.4 to 2.0 bar) 0 to 60 psig 35 2.4 7 scfh(5) 42 scfh(5)
1. Consult your Fisher Controls sales office or representative for gauges calibrated in
other units of measurement.
2. Control and stability may be impaired if this pressure is exceeded.
3. At zero or maximum proportional band or span setting.
4. At setting in middle of proportional band or span range.
5. If air consumption is desired in normal m3/hr at 0°C and 1.01325 bar, multiply scfh
by 0.0268.
Figures 3 through 8 show dimensions and connection
locations used when you install a receiver/controller.
Actuator Yoke Mounting
See figure 4 for a typical mounting plate. Key numbers
are shown in figure 5.
1. Locate the mounting plate (key 164, figure 5). Se-
lect appropriate mounting holes in the mounting plate
for the receiver/controller. Then, align the mounting
holes in the mounting plate with the mounting holes in
the receiver/controller case.
2. Place the two cap screws (key 48) through the
mounting plate from “back to front”. Engage the cap
screw threads in the mounting holes in the receiver/
controller case and tighten the cap screws to attach
the mounting plate to the back of the receiver/control-
ler.
3. Place cap screws (key 39) through the yoke mount-
ing holes in the mounting plate from “front to back”.
Place a spacer (key 174) over the threads of the cap
screws extending from the mounting plate to properly
separate the mounting plate and the lower yoke boss
of the actuator (figure 5).
4. Attach the mounting plate with receiver/controller to
the lower yoke boss of the actuator yoke. Be sure the
spacers support the mounting plate. Be sure the re-
ceiver/controller is parallel with the actuator yoke and
then tighten the cap screws into the yoke boss.
5. If supply pressure is piped through a filter/regulator,
bolt the regulator directly to the upper yoke boss using
the cap screws (key 85). Provide appropriate piping
from the filter/regulator output connection to the re-
ceiver/controller supply connection.
Wall Mounting
See figure 6 for key number locations. The mounting
plate is shown in figure 5.
Figure 3. Dimensions and Location of Connections
AD4913-H
A3844-1 / IL
1. Install lock washers (key 83) on the cap screws
(key 39). Then, insert the cap screws through the
mounting plate from “back to front“. Place a spacer
(key 174) over the threads of each cap screw as it ex-
tends from the mounting plate. The spacers are re-
quired to properly separate the receiver/controller from
the mounting plate. Then, thread the cap screws into
the mounting holes in the receiver/controller case and
tighten.

Types 2506, 2516, 2516F
5
Figure 4. Mounting Plate for Y oke Mounting, W all Mounting
IC2218-E / IL
Figure5. Y oke Mounting
AD4913-H
A3848-1 / IL
2. Install lock washers (key 83) on the cap screws
(key 48). Then, insert the cap screws through the
mounting plate from ‘‘front to back’’. Place a spacer
(key 174) over the threads of each cap screw as it ex-
tends from the mounting plate. The spacers are re-
quired to properly separate the mounting plate from
the wall mounting position. Then, thread the cap
screws into holes prepared at the wall mounting posi-
tion and tighten.
3. Provide appropriate piping from the filter/regulator
output connection to the receiver/controller supply
connection.
Actuator Diaphragm Case Mounting
To mount a receiver/controller to the diaphragm casing
of a standard Fisher Controls diaphragm actuator, re-
move two hex nuts and hex head cap screws securing
the upper and lower diaphragm casings. If necessary,
refer to the appropriate actuator instruction manual to
locate the hex head cap screws and nuts.
Figure6. W all Mounting
AD4913-H
A3847-1 / IL
Figure 7. Case Mounting
AD4913-H
A3846-1 / IL
See figure 7 for key number locations.
1. Locate the receiver/controller mounting holes in
mounting bracket (key 164, figure 7).
2. Place the two cap screws (key 48) through the re-
ceiver/controller mounting plate holes from ‘‘back to
front’’. Engage the threads in the receiver/controller
mounting holes and tighten the cap screws to attach
the mounting plate to the back of the receiver/control-
ler.
3. Locate the receiver/controller mounting position on
the horizontal edge of the diaphragm case. A typical
Fisher Controls diaphragm actuator features upper
and lower diaphragm casings held together with hex
head cap screws and hex nuts. Remove the hex nuts
from two hex head cap screws joining the upper and
lower casing. Then, remove the cap screws.
4. Place the mounting bracket over the empty casing
holes. Insert the casing cap screws through the
mounting bracket, upper casing, and lower casing.

Types 2506, 2516, 2516F
6
Add the nuts and tighten to secure the mounting
bracket with receiver/controller to the casing.
5. If supply pressure is piped through a filter/regulator,
the regulator may be attached in one of two locations:
DAttach the regulator directly to the upper yoke
boss using the cap screws (key 85) for yoke mounting.
DAttach the regulator to the casing using a mount-
ing bracket (key 177). The mounting bracket for the
regulator is the same as the mounting bracket for the
receiver/controller. Follow steps 1 through 4 to mount
the regulator.
6. Connect the filter/regulator output connection to the
receiver/controller supply connection.
Pipestand Mounting
See figure 8 for key number locations.
1. Locate the mounting plate (key 164). Select ap-
propriate mounting holes in the mounting plate for the
receiver/controller. Then, align the mounting holes in
the mounting plate with the mounting holes in the re-
ceiver/controller case.
2. Place the two cap screws (key 48) through the
mounting plate from ‘‘back to front’’. Place a spacer
(key 174) over the threads of each cap screw as it ex-
tends from the mounting plate. The spacers are re-
quired to properly separate the receiver/controller from
the mounting plate.
3. Engage the cap screw threads in the mounting
holes in the receiver/controller case and tighten the
cap screws to attach the mounting plate to the back of
the receiver/controller.
4. Attach the mounting plate with receiver/controller to
a 2-inch (nominal) pipe with pipe clamps (key 175).
Each pipe clamp includes two nuts. Tighten clamp
nuts.
5. If supply pressure is piped through a filter/regulator,
the regulator may be attached to the mounting plate
using cap screws (key 85), lock washers (key 84), and
hex nuts (key 40).
6. Provide appropriate piping from the filter/regulator
output connection to the receiver/controller supply
connection.
2500 Series Controller/Transmitter and
2506 Series Receiver/Controller
Mounting
If the controller/transmitter and receiver/controller are
ordered simultaneously, the factory will mount them
together before shipment (figure 9). For examples of
Figure 8. Pipestand Mounting
AD4913-H
A3845-1 / IL
typical transmitter/receiver mounting arrangements,
see figures 10 and 11.
If the receiver/controller is ordered separately for use
with a 2500 Series controller/transmitter, it may not
have the required mounting parts. If mounting parts
are required, consult the parts list under the specific
mounting application.
See figure 9 for key number locations.
1. Install lock washers (key 83) on the cap screws
(key 39). Then, insert the cap screws through the
mounting plate from ‘‘back to front’’. Thread the cap
screws into the mounting holes in the receiver/control-
ler case and tighten.
2. Install lock washers (key 83) on the cap screws
(key 48). Then, insert the cap screws through the
mounting plate from ‘‘back to front’’. Thread the cap
screws into the mounting holes in the controller/trans-
mitter.
3. If supply pressure is piped through a filter/regulator,
bolt the regulator to the back of the controller/transmit-
ter.
4. Provide appropriate piping connections between
the units as shown in figures 10 or 11.
Connections
WARNING
The controller is capable of providing
full supply pressure to connected equip-
ment. To avoid personal injury and
equipment damage, make sure the sup-
ply pressure never exceeds the maxi-
mum safe working pressure of any con-
nected equipment.

Types 2506, 2516, 2516F
7
Figure 9. 2500 Series Controller -T ransmitter and 2506 Series Receiver -Controller Mounting
AR5748-B
3V7594-A
B2115-1 / IL
To complete the installation of a receiver/controller,
make connections with tubing and fittings between the
receiver/controller and the actuator. The fittings, tub-
ing, and mounting parts required depend on the type
number and optional equipment such as filter, regula-
tor, and bypass valve.
All pressure connections on the 2506 Series receiver/
controllers are 1/4-inch NPT female fittings (figures 3,
9). Use 1/4-inch piping or 3/8-inch tubing to these con-
nections.
If remote venting is required, see the Vents subsection
below.
Supply Connection
WARNING
Personal injury or property damage may
occur from an uncontrolled process if
the supply medium is not clean, dry, oil-
free, or non-corrosive gas. Industry in-
strument air quality standards describe
acceptable dirt, oil, and moisture con-
tent. Due to variations in nature of the
problems, these influences can have on
pneumatic equipment, Fisher Controls
has no technical basis on which to rec-
ommend the level of filtration equipment
required to prevent performance degra-
dation of pneumatic equipment. A filter
or filter regulator capable of removing
particles 40 microns in diameter should
suffice for most applications. Use of
suitable filtration equipment and the es-
tablishment of a maintenance cycle to
monitor its operation is recommended.
If the existing supply is corrosive, make
sure the tubing and instrument compo-
nents that contact the corrosive medium
are of suitable corrosion-resistant mate-
rials, or change to a noncorrosive sup-
ply medium.
CAUTION
Personal injury or property damage may
occur from bursting due to overpressur-
ing any system component. To avoid
injury or damage, provide pressure-
relieving or pressure-limiting devices if
supply or input pressure could exceed
the maximum allowable pressures listed
in table 3.
It is recommended that supply pressure pass through
a filter/regulator combination such as a 67AFR. See
table 3 for recommended supply pressures to the re-
ceiver/controller.
Typical supply pressure for the 67AFR is clean dry air
or a gas at a pressure of 35 psig (2.5 bar) to a maxi-
mum of 250 psig (17 bar). For specific regulator limits,
see the appropriate regulator instruction manual.

Types 2506, 2516, 2516F
8
Figure 10. T ypical Transmitter with Receiver and Control Valve Installation Assembly
DF5357-A
A3701-2 / IL
Output Connections
See figure 3.
Use 3/8-inch tubing between the actuator and the re-
ceiver/controller. Connect the output (diaphragm) con-
nection to the appropriate actuator connection.
Instrument Connection
See figure 3.
Use 3/8-inch tubing to connect the output from the
control device to the INSTRUMENT connection on the
receiver/controller.
Vents
WARNING
If a flammable, toxic, corrosive, or reac-
tive gas is used as supply pressure me-
dium, personal injury or property dam-
age could result from fire or explosion
caused by the accumulated gas. Injury
or property damage could also result
from contact with the flammable, toxic,
corrosive, or reactive gas.
The case and cover assembly does not
form a gas-tight seal and flammable,
toxic, corrosive, or reactive gas could
leak from this unit. Therefore, if the re-
ceiver/controller unit is enclosed, install
a remote vent line to remove part of the
exhaust gas to a properly ventilated
area. However, a remote vent line can-
not be relied upon to remove all hazard-
ous gas. Vent line piping should comply
with local and regional codes and
should be as short as possible. Select
vent line piping with adequate inside
diameter and install with few bends to
reduce case pressure buildup.
See figure 3 for vent locations.
A receiver/controller may be ordered with one of two
vent configurations:
DStandard, with 1/4-inch case vent open. The
standard receiver/controller case (key 1,
p/n 4D396044012) is not drilled and tapped for the
optional tapped vent.

Types 2506, 2516, 2516F
9
Figure 1 1. T ypical T ransmitter and Receiver Installation with an Indicator and Remote Set Point Connection
DF5379-A
A3702-2 / IL
DOptional, with tapped vent, for applications re-
quiring vent line attachment to receiver/controller case.
The optional receiver/controller case (key 1, p/n
2E355544012) features a tapped vent for applications
requiring a remote vent line. The standard case vent
should be sealed with a machine screw.
An air vent plug (key 137) with gasket (key 138) and
hex nut (key 139) can be added to the tapped vent.
The air vent plug provides a 1/4-inch NPT female fit-
ting.
DReceiver/controllers feature an open bellows
vent/remote set point connection. An external vent
assembly (key 128) is recommended if the remote set
point connection is not made. The external vent as-
sembly can be driven into the open bellows vent.
Protect all vents against the entrance of any foreign
material that could plug them. Check the vents periodi-
cally to be certain they are not plugged.
Remote Set Point Connection
See figure 3.
The remote set point connection is made at the tapped
bellows vent/remote set point connection on the rear
of the receiver/controller case. A vent assembly (key
128) is recommended if the remote set point connec-
tion is not made.
To make a remote set point connection, remove the
vent assembly from the connection. Install piping from
the remote set point loader or regulator.
When a panel loader or regulator is used for remote
set point adjustment, as shown in figure 11, an adjust-
able output range of 3 to 15 psig (0.2 to 1 bar) or 6 to
30 (0.4 to 2 bar) is required to match the receiver/con-
troller output range.
Use clean, dry air or a noncorrosive gas for supply
pressure to the remote set point bellows.

Types 2506, 2516, 2516F
10
Startup
It is important that the output range of the transmitter
or other device used as the input to the receiver/con-
troller be adjusted so that its output range corresponds
to the input signal range of the receiver/controller. Be
sure the receiver/controller action (direct or reverse) is
correct for the application.
To start the system:
DFor all receiver/controllers, perform steps 1
and 2.
1. See table 3 for specific pressure limits. Be sure the
correct supply pressure is available. If necessary, ad-
just the regulator to 20 psig (1.4 bar) for a 3 to 15 psig
(0.2 to 1 bar) or 35 psig (2.4 bar) for a 6 to 30 psig
(0.4 to 2 bar) receiver/controller range.
2. Turn on the supply pressure to the receiver/control-
ler.
DTo make the proper level or output pressure
setting for a Type 2506 receiver/controller, go to
step 3. To make the proper level or output pres-
sure setting for a Type 2516 receiver/controller, go
to step 9. For the Type 2506 receiver/controller:
3. Set the proportional band adjustment at 15 percent
(1.5 on the adjustment dial). At this setting, a 1.8 psig
(0.1 bar) input pressure causes a 12 psig output pres-
sure change. Operate the receiver/controller with the
proportional band setting as small as possible.
4. Provide an input pressure equal to the output pres-
sure of the transmitter at a value desired or halfway
between the transmitter output range. For example, on
a receiver/controller, if the desired control point is half-
way between the ends of the displacer, provide an in-
put of 9 psig (0.6 bar) which is halfway between 3 and
15 psig (0.2 and 1 bar) transmitter output range.
5. Set the output pressure adjustment to give a con-
troller output that is halfway between its output range.
6. Vary the input pressure to be sure the full controller
output pressure range is produced within the specified
input pressure range.
7. Lock the output pressure adjustment and connect
the receiver/controller to the final control element.
8. If the proportional band setting is too narrow, caus-
ing instability, widen the proportional band just enough
to stabilize control. After making this adjustment, it
may be necessary to reset the output pressure slightly
to produce the proper control range.
DFor the Type 2516 receiver/controller:
9. Set the proportional band adjustment dial at 0 per-
cent (minimum proportional band).
10. Set the reset adjustment to the fastest speed
(0.005 minutes-per-repeat).
11. Provide an input pressure equal to the output
pressure of the transmitter at a value desired or half-
way between the transmitter output range. For exam-
ple, on a receiver/controller, if the desired control point
is halfway between the ends of the displacer, provide
an input of 9 psig (0.6 bar) which is halfway between 3
and 15 psig (0.2 and 1 bar) transmitter output range.
12. Adjust the output pressure dial to give a controller
output somewhere within the output range of the re-
ceiver/controller.
13. Lock the output pressure dial and connect to the
final control element.
14. If the proportional band is too narrow causing in-
stability, widen the proportional band or slow the reset
just enough to stabilize control.
Adjustments
To adjust the receiver/controller, open the cover and
locate the appropriate adjustment. See figures 15, 18,
19 for the location of adjustments.
Set Point Adjustment
To adjust the level set point, loosen the knurled knob
and rotate the knob around the INCREASE OUTPUT
PRESSURE or RAISE LEVEL dial. To raise fluid or
interface level or increase density, rotate the knob in
the direction of the arrow.
To lower level or decrease density, rotate the knob in
the opposite direction. The INCREASE OUTPUT
PRESSURE or RAISE LEVEL dial is graduated (in
percent) to show approximate indications of the receiv-
er/controller set point. When making adjustments, do
not rely only on the dial setting. Monitor the process
fluid level to be sure the receiver/controller attains the
desired set point.
For differential gap receiver/controllers, the level set-
ting adjustment determines the location of the gap
within the range of the sensing element.
Remote Set Point Adjustment
On a receiver/controller with remote set point adjust-
ment capability, adjust the set point by changing the
pressure to the remote set point connection. Increase
the remote set point signal pressure to decrease the
receiver/controller set point (for a direct acting receiv-
er/controller) or increase the receiver/controller set
point (for a reverse acting receiver/controller).