Emerson Level-Trol 2500 Series Bedienungsanleitung

www.Fisher.com

D200124X012

2500 and 2503 Series Level-TrolRControllers

and Transmitters

Contents

Introduction 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scope of Manual 2. . . . . . . . . . . . . . . . . . . . . . . . .

Description 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Educational Services 2. . . . . . . . . . . . . . . . . . . . . .

Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sensor Assembly 5. . . . . . . . . . . . . . . . . . . . . . . . .

Uncrating 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Controller/Transmitter Orientation 6. . . . . . . . . . .

Mounting Caged Sensor 7. . . . . . . . . . . . . . . . . . .

Mounting Cageless Sensor 8. . . . . . . . . . . . . . . .

Side-Mounted Sensor 8. . . . . . . . . . . . . . . . . . . .

Top-Mounted Sensor 8. . . . . . . . . . . . . . . . . . . .

Supply and Output Pressure Connection 10. . . .

Supply Pressure 10. . . . . . . . . . . . . . . . . . . . . . . .

Controller/Transmitter Output Connection 12. .

Prestartup Checks 12. . . . . . . . . . . . . . . . . . . . . . . .

Type 2500 Controller or Type 2500T

Transmitter 13. . . . . . . . . . . . . . . . . . . . . . . . . . .

Type 2500S Controller 14. . . . . . . . . . . . . . . . . . .

Type 2503 Controller 14. . . . . . . . . . . . . . . . . . . . .

Adjustments 15. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control Action 15. . . . . . . . . . . . . . . . . . . . . . . . . .

Level Adjustment (Controllers Only) 15. . . . . . .

Zero Adjustment (Transmitters Only) 15. . . . . .

Proportional Band Adjustment

(Except Transmitters and 2503

Series Controllers) 15. . . . . . . . . . . . . . . . . . .

Specific Gravity Adjustment

(Transmitters Only) 15. . . . . . . . . . . . . . . . . . .

Calibration 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Precalibration Requirements 15. . . . . . . . . . . . . .

Wet Calibration 16. . . . . . . . . . . . . . . . . . . . . . . . .

Dry Calibration 16. . . . . . . . . . . . . . . . . . . . . . . . .

Controller/Transmitter and Torque Tube Arm

Disassembly 16. . . . . . . . . . . . . . . . . . . . . . . .

Determining the Amount of

Suspended Weight 16. . . . . . . . . . . . . . . . . . .

Calibration Procedure 17. . . . . . . . . . . . . . . . . . . .

Type 2500 Controller and

2500T Transmitter 18. . . . . . . . . . . . . . . . . . .

Type 2500S and 2503 Controllers 19. . . . . . . .

Figure 1. 2500 or 2503 Series Level-TrolR

Controller/

Transmitter on Caged 249 Series Sensor

2500 OR 2503 SERIES

CONTROLLER/

TRANSMITTER

249 SERIES SENSOR

W8334

Startup 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Type 2500 Controller 20. . . . . . . . . . . . . . . . . . . . .

Type 2500T Transmitter 21. . . . . . . . . . . . . . . . . .

Type 2500S Controller 21. . . . . . . . . . . . . . . . . . .

Type 2503 Controller 21. . . . . . . . . . . . . . . . . . . . .

Principle of Operation 21. . . . . . . . . . . . . . . . . . . . .

Type 2500 Controller or Type 2500T

Transmitter 21. . . . . . . . . . . . . . . . . . . . . . . . . . .

Proportional Valve 23. . . . . . . . . . . . . . . . . . . . . . .

Type 2500S Controller 23. . . . . . . . . . . . . . . . . . .

Type 2503 Controller 23. . . . . . . . . . . . . . . . . . . . .

Maintenance 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 24. . . . . . . . . . . . . . . . . . . . . . . . .

Removing Controller/Transmitter from

Sensor 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Changing Mounting Methods 26. . . . . . . . . . . . . .

Installing Controller/Transmitter on Sensor 27. .

(continued on page 2)

Instruction Manual

Form 1013

December 2005 Type 2500

Type 2500

Instruction Manual

Form 1013

December 2005

Contents (Continued)

Replacing the Bourdon Tube 27. . . . . . . . . . . . . .

Changing Action 28. . . . . . . . . . . . . . . . . . . . . . . . .

Relay Deadband Testing (Type 2500

Controller or 2500T Transmitter Only) 29. . . . .

Replacing the Proportional Valve 29. . . . . . . . . .

Changing Relay 29. . . . . . . . . . . . . . . . . . . . . . . . .

Parts Ordering 29. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts List 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction

Scope of Manual

This manual provides installation, operating,

calibration, maintenance, and parts ordering

information for the 2500 and 2503 Series pneumatic

controllers and transmitters used in combination with

249 Series displacer sensors.

Note

This manual does not include

installation or maintenance

procedures for the supply pressure

regulator, sensor, or other devices. For

that information, refer to the

appropriate instruction manual for the

other device.

No person may install, operate or maintain a 2500 or

2503 Series pneumatic controller/transmitter without

first Dbeing fully trained and qualified in valve,

actuator and accessory installation, operation and

maintenance, and Dcarefully reading and

understanding the contents of this manual. If you

have any questions about these instructions, contact

your Emerson Process Managementtsales office.

Description

These instruments control or transmit the fluid level,

the level of interface between two fluids, or the

density (specific gravity). Each unit consists of a 249

Series displacer-type fluid level sensor and a 2500

or 2503 Series pneumatic controller or transmitter.

Figure 1 shows a typical controller-sensor

combination.

Specifications

Refer to table 1 for specifications.

Educational Services

For information on available courses for 2500 or

2503 Series pneumatic controllers and transmitters,

as well as a variety of other products, contact:

Emerson Process Management

Educational Services, Registration

P.O. Box 190; 301 S. 1st Ave.

Marshalltown, IA 50158−2823

Phone: 800−338−8158 or

Phone: 641−754−3771

FAX: 641−754−3431

e-mail: [email protected]

Note

Neither EmersonR, Emerson Process

Management, FisherRnor any of their

affiliated entities assumes

responsibility for the selection, use, or

maintenance of any product.

Responsibility for the selection, use,

and maintenance of any product

remains with the purchaser and

end-user.

Type 2500

Instruction Manual

Form 1013

December 2005

Table 1. Specifications

Available Configurations(1)

Type 2500—Proportional-Only controller

Type 2500C—Proportional-Only controller with

indicator (see figure 10)

Type 2500R—Reverse acting proportional-only

controller

Type 2500S—Differential gap (snap acting)

controller. See changing controller action

procedure and figure 15

Type 2500T—Transmitter

Type 2503—Differential gap controller without

proportional valve; for applications requiring very

little adjustment

Input Signal(2)

Fluid Level or Fluid-to-Fluid Interface Level:

From 0 to 100% of displacer length—standard

lengths for all sensors are 356 mm or 812 mm

(14 inches or 32 inches). Other lengths available

depending on sensor construction.

Fluid Density: From 0 to 100% of displacement

force change obtained with given displacer

volume. Standard volume for displacers are listed

in table 2.

Output Signal(2)

Type 2500 Controller and 2500T Transmitter:

0.2 to 1 bar (3 to 15 psig) or 0.4 to 2 bar (6 to 30

psig)

Type 2500S and 2503 Differential Gap

Controllers: 0 bar (0 psig) when switched off and

full supply [1.4 or 2.4 bar (20 or 35 psig) nominal

depending on controller output pressure range]

when switched on.

Area Ratio of Relay Diaphragms

3:1

Supply Pressure Data

See table 3(3)

Supply Medium

Air or natural gas(7)

Maximum Supply Pressure(3,6)

3 bar (45 psig) to the controller or transmitter. If

controller or transmitter is equipped with an

integrally mounted Type 67FR filter/regulator,

typical supply pressure to the regulator is from 2.5

bar (35 psig) to 17 bar (250 psig), maximum. For

supply pressures to the filter/regulator, refer to the

appropriate regulator instruction manual.

Steady-State Air Consumption

2500 Series Controllers and Transmitters

(2500, 2500C, 2500R, 2500S, and 2500T): See

table 3

Type 2503 Controller: Vents only when relay is

exhausting

Proportional Band(2) Adjustment

(Proportional-Only Controllers)

Full output pressure change adjustable over 10 to

100% of displacer length(5)

Differential Gap(2) Adjustment (Differential Gap

Controllers)

Type 2500S Controller: Full output pressure

change adjustable from 20 to 100% of displacer

length.(5)

Type 2503 Controller: Full output pressure

change adjustable over approximately 25 to 40%

of displacer length(5)

Span(2) Adjustment (Type 2500T Transmitter)

Full output pressure change adjustable from 20 to

100% of displacer length(5)

Set Point(2) (controllers only) or Zero(2)

(transmitters only) Adjustment

For proportional-only controllers or transmitters,

level adjustment positions the set point or zero for

the fluid level, interface level, or displacer force

change (density) within the displacer length.

For differential gap controllers, level adjustment

simultaneously positions both ends of the gap

within the displacer length.

Performance

Independent Linearity(2) (transmitters only):

1% of output pressure change for 100% span.

Hysteresis: 0.6% of output pressure change at

100% proportional band, differential gap, or span

(continued)

Type 2500

Instruction Manual

Form 1013

December 2005

Table 1. Specifications (Continued)

Performance (continued)

Repeatability(2):0.2% of displacer length or

displacement force change

Deadband(2) (except differential gap

controllers(4)): 0.05% of proportional band or

span

Typical Frequency Response(2):4 Hz and 90

degree phase shift at 100% proportional band

with output piped to typical instrument bellows

using 6.1 meters (20 feet) of 1/4-inch tubing

Ambient Operating Temperature Limits(6)

For ambient temperature ranges and guidelines

for use of the optional heat insulator assembly,

see figure 2. Relay temperature limits are:

Standard Construction: -40 to 71_C(-40 to

160_F)

High-Temperature Construction: -18 to 104_C

(0 to 220_F)

Typical Ambient Temperature Operating

Influence

Output pressure changes 1.5% per 10_C

(50_F) change in temperature at 100%

proportional band when using a standard wall

torque tube with 249 Series sensors

Hazardous Area Classification

2500 and 2503 Series controllers/transmitters

comply with the requirements of ATEX Group II

Category 2 Gas and Dust

Supply and Output Connections

1/4-inch NPT female

Maximum Working Pressure (sensors only)

Refer to the appropriate sensor instruction

manual

1. Controllers are field adjustable between direct or reverse action. The letter R in the type number indicates that the controller/transmitter shipped from the factory set for reverse action (see

changing controller action procedures). The letter C in the type number indicates that a pointer is attached to the torque tube shaft providing visual monitoring of torque tube motion.

2. This term is defined in ISA Standard S51.1.

3. Control and stability may be impaired if the maximum pressures are exceeded.

4. Adjusting the span of the differential gap controller is equivalent to adjusting the deadband.

5. These statements apply only to units sized to produce a full output change for a 100% level change at the maximum proportional band dial setting.

6. The pressure/temperature limits in this document, and any applicable standard or code limitation should not be exceeded.

7. Natural gas to contain no more than 20 ppm of H2S.

Table 2. Standard Displacer Volumes

SENSOR TYPE STANDARD VOLUME,

Liters

STANDARD VOLUME,

Cubic Inches

249, 249B, 249BP, 249K, 249W

249C, 249CP, 249W

249L

249V

1.6

1.0

1.9

1.3(3)

100(1)

60(2)

120

80(3)

1. For 249W, with standard 812 mm (32-inch) displacer.

2. For 249W, with standard 356 mm (14-inch) displacer.

3. With standard 305 mm (12-inch) flange-face-to-displacer centerline dimension only.

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

MAXIMUM

SUPPLY PRESSURE

Bar Psig Minimum(3) Maximum(4)

0.2 to 1 bar (3 to 15 psig) 0 to 30 psig 1.4 20 4.2 scfh(5) 27 scfh(5) 3 bar (45 psig)

0.4 to 2 bar (6 to 30 psig) 0 to 60 psig 2.4 35 7 scfh(5) 42 scfh(5) 3 bar (45 psig)

1. Consult your Emerson Process Management sales office about gauges in other units.

2. Control and stability may be impaired if this pressure is exceeded.

3. At zero or maximum proportional band or specific gravity setting.

4. At setting in middle of proportional band or specific gravity range.

5. If air consumption is desired in normal m3/hr at 0_C and 1.01325 bar, multiply scfh by 0.0258.

Type 2500

Instruction Manual

Form 1013

December 2005

Figure 2. Guidelines for Use of Optional Heat Insulator Assembly

0 20 40 60 80 100 120 140 160

USE INSULATOR (CAUTION! IF AMBIENT DEWPOINT IS ABOVE

PROCESS TEMPERATURE, ICE FORMATION MAY CAUSE INSTRUMENT

MALFUNCTION AND REDUCE INSULATOR EFFECTIVENESS.)

01020

−18 −10 30 40 50 60 70

593

500

400

300

200

100

−40

400

800

1100

−20

NO INSULATOR NECESSARY

AMBIENT TEMPERATURE (_C)

STANDARD CONTROLLER OR TRANSMITTER

AMBIENT TEMPERATURE (_F)

HEAT INSULATOR

REQUIRED

TOO

HOT

NOTE:

FOR APPLICATIONS BELOW −29_C (−20_F), BE SURE THE SENSOR MATERIALS

OF CONSTRUCTION ARE APPROPRIATE FOR THE SERVICE TEMPERATURE.

PROCESS TEMPERATURE ( C)

PROCESS TEMPERATURE ( F)

0 20 40 60 80 100 120 140 200

010 20

−18 −10 30 40 50 60 70 105

593

500

400

300

200

100

400

800

1100

−20

NO INSULATOR NECESSARY

AMBIENT TEMPERATURE (_C)

HIGH-TEMPERATURE CONTROLLER OR TRANSMITTER

AMBIENT TEMPERATURE (_F)

HEAT INSULATOR

REQUIRED

TOO

HOT

PROCESS TEMPERATURE ( C)

PROCESS TEMPERATURE ( F)

180160

80 90

USE INSULATOR (CAUTION! IF AMBIENT DEWPOINT IS ABOVE PROCESS

TEMPERATURE, ICE FORMATION MAY CAUSE INSTRUMENT MALFUNCTION

AND REDUCE INSULATOR EFFECTIVENESS.)

CV6190−E

B1413-3/IL

−40

−29

−18

100

220

Table 4. Displacer and Torque Tube Materials

Part Standard Material Other Materials

Displacer 304 Stainless Steel

316 Stainless Steel,

N10276, N04400,

Plastic, and Special

Alloys

Displacer Rod,

Driver Bearing,

Displacer Rod

Driver

316 Stainless Steel

N10276, N04400,

other Austenitic

Stainless Steels, and

Special Alloys

Torque Tube N05500(1) 316 Stainless Steels,

N06600, N10276

1. N05500 is not recommended for spring applications above

232_C (450_F). Contact your Emerson Process Management

sales office or application engineer if temperatures exceeding this

limit are required.

Installation

The 2500 and 2503 Series controller/transmitters

work in combination with 249 Series displacer-type

sensors. The factory attaches the

controller/transmitter to the sensor, unless it is

ordered separately.

If using natural gas as the pneumatic supply

medium, natural gas will be used in the pressure

connections of the unit to any connected equipment.

The unit will vent natural gas into the surrounding

atmosphere.

WARNING

Always wear protective clothing,

gloves, and eyewear when performing

any installation operations to avoid

personal injury.

Check with your process or safety

engineer for any additional measures

that must be taken to protect against

process media.

WARNING

Personal injury or property damage

may result from fire or explosion if

natural gas is used as the supply

medium and preventative measures

are not taken. Preventative measures

may include: Re-evaluating the

hazardous area classification,

ensuring adequate ventilation, and the

removal of any nearby ignition

sources.

Sensor Assembly

Table 2 lists sensors recommended for use with

controller/transmitters. Table 4 contains displacer

and torque tube materials. For sensor installation

and maintenance, refer to the appropriate sensor

instruction manual.

WARNING

When replacing the sensor assembly,

the displacer may retain process fluid

or pressure. Personal injury or

property damage may occur due to

Type 2500

Instruction Manual

Form 1013

December 2005

sudden release of the pressure.

Contact with hazardous fluid, fire, or

explosion can be caused by

puncturing, heating, or repairing a

displacer retaining process pressure

or fluid. This danger may not be

readily apparent when disassembling

the sensor assembly or removing the

displacer. Before disassembling the

sensor or removing the displacer,

observe the more specific warning

provided in the sensor instruction

manual.

Uncrating

Unless ordered separately, the controller/transmitter

is attached to the sensor when shipped. Carefully

uncrate the assembly.

CAUTION

Sensors used for interface or density

control may be so large and heavy that

the torque tube cannot fully support

their weight in air. On the 249V, a

travel stop is used to prevent damage.

Do not remove this travel stop

assembly without first removing the

displacer from the displacer rod. Refer

to the instruction manual for cageless

249 Series sensors.

Note

Caged sensors have rods and blocks

installed at each end of the displacers

to protect the displacers in shipping.

Remove these parts before you install

the sensor to allow the displacer to

function properly.

Caged sensors come with the displacer installed in

the cage. If a tubular gauge glass is ordered with the

sensor, the gauge glass is crated separately and

must be installed at the site. A damping plate is

installed in the lower screwed or flanged connection

(see figure 3) to provide more stable operation. Be

certain that the cage equalizing connections and the

damping plate are not plugged by foreign material.

A cageless sensor comes with its displacer

separated from the sensor assembly. Displacers

Figure 3. Damping Plate Location

W0144−1/IL

W2141−1B/IL

DISPLACER

CAGE

SCREWED

CONNECTION

FLANGED

CONNECTION

DAMPING PLATE

longer than 813 mm (32 inches) come in a separate

crate. Shorter displacers come in the same crate as

the sensor, but are not attached to their displacer

rods. Inspect the displacer to ensure it is not dented.

A dent may reduce the pressure rating of the

displacer. If a displacer is dented, replace it.

Controller/Transmitter Orientation

The controller/transmitter attaches to the sensor in

one of the mounting positions shown in figure 4.

Right-hand mounting is with the controller or

transmitter case to the right of the displacer when

you look at the front of the case; left-hand mounting

is with the case to the left of the displacer. The

mounting position can be changed in the field.

Changing this mounting position changes the control

action from direct to reverse, or vice versa.

All caged sensors have a rotatable head. That is, the

controller/transmitter may be positioned at any of

eight alternate positions around the cage as

indicated by the numbers 1 through 8 in figure 4. To

rotate the head, remove the head flange bolts and

nuts and position the head as desired.

Type 2500

Instruction Manual

Form 1013

December 2005

Figure 4. Cage Head Mounting Positions

AH9150−A

A2613−2/IL

Mounting Caged Sensor

Note

Install the cage so that it is plumb; the

displacer must not touch the cage

wall. If the displacer touches the cage

wall, the unit will transmit an

erroneous output signal.

Note

If the controller/transmitter is not

mounted on the sensor, refer to the

Installing Controller/Transmitter on

Sensor procedures in the Maintenance

section. This section also provides

instructions for adding a heat insulator

to a unit.

Figure 5. Cage Connection Styles

A1271−2/IL

Cage connections normally are either 1-1/2 or

2-inch, screwed or flanged. Figure 5 shows the

combinations. With flanged connections, use

standard gaskets or other flat-sheet gaskets

compatible with the process fluid. Spiral-wound

gaskets without compression-controlling centering

rings cannot be used for flange connections.

As shown in figure 6, mount the cage by running

equalizing lines between the cage connections and

the vessel. A shutoff or hand valve with a 1-1/2 inch

diameter or larger port should be installed in each of

the equalizing lines. Also install a drain between the

cage and shutoff or hand valve whenever the bottom

cage line has a fluid-trapping low point.

On fluid or interface level applications, position the

sensor so that the center line on the cage (see figure

6) is as close as possible to the center of the fluid

level or interface level range being measured. Also

consider installing a gauge glass on the vessel, or

on the sensor cage (if the cage is tapped for a

gauge).

Type 2500

Instruction Manual

Form 1013

December 2005

Figure 6. Caged Sensor Mounting

EQUALIZING

LINE

DRAIN VALVE

EQUALIZING LINE

CENTER OF

LIQUID OR

INTERFACE LEVEL

DF5379-A

A1883-2/IL

SHUTOFF

VALVES

Mounting Cageless Sensor

Note

If a stillwell is used, install it plumb so

that the displacer does not touch the

wall of the stillwell. If the displacer

touches the wall, the unit will transmit

an erroneous output signal.

Since the displacer hangs inside the vessel, provide

a stillwell around the displacer if the fluid is in a state

of continuous agitation to avoid excessive turbulence

around the displacer.

Note

Displacers used in an interface level

application must be completely

submerged during operation. If

displacers aren’t completely

submerged, they will not calibrate or

perform properly. To obtain the

desired controller or transmitter

sensitivity may require using either a

thin-wall torque tube, an oversized

displacer, or both.

Note

If the controller/transmitter is not

mounted on the sensor, refer to the

Installing Controller/Transmitter on

Sensor procedures in the Maintenance

section. This section also provides

instructions for adding a heat insulator

to a unit.

Attach a cageless sensor to a flanged connection on

the vessel as shown in figure 7. For interface or fluid

level applications, install a gauge glass on the

vessel.

Side-Mounted Sensor

If a stillwell is required (see figure 7), attach the

displacer to the displacer rod from inside the vessel.

Connect the displacer as shown in figure 8, locking

the assembly with the cotter spring provided. If a

stillwell is not required, attach the displacer rod

before mounting the sensor on the vessel. Then, you

can swing the displacer out horizontally for insertion

into the vessel. However, once the sensor is

installed and the displacer drops to a vertical

position, the displacer may not be capable of being

withdrawn for servicing later. Be sure there is

another access to the displacer to permit swinging it

to a horizontal position or to permit disconnecting it

from the displacer rod.

If an extension is used between the displacer spud

and the displacer stem end piece, make sure the

nuts are tight at each end of the displacer stem

extension. Install and tighten suitable bolting or cap

screws in the flanged connection to complete the

installation.

Top-Mounted Sensor

CAUTION

If inserting the displacer into the

vessel before attaching to the

displacer rod, provide a means of

supporting the displacer to prevent it

from dropping into the vessel and

suffering damage.

Figure 7 shows an example of a top-mounted

cageless sensor. You may attach the displacer to

the displacer rod before installing the sensor on the

vessel. If the displacer diameter is small enough,

you may install a long or sectionalized displacer

Type 2500

Instruction Manual

Form 1013

December 2005

Figure 7. Cageless Sensor Mounting

CF5380-A

A3893/IL

TOP

MOUNTED

SIDE VIEW (WITHOUT STILLWELL)SIDE VIEW (SHOWING STILLWELL)

SIDE

MOUNTED

W0645−1/IL

W0229-1A/IL

COTTER SPRING

DISPLACER ROD

LOCKING NUTS

DISPLACER SPUD

DISPLACER

STEM

EXTENSION

DISPLACER

STEM

END PIECE

TYPE 249V

W0228-1A/IL DISPLACER ROD

DISPLACER

SPUD

ALL OTHER TYPES

COTTER SPRING

Figure 8. Displacer and Displacer Rod Connections

Type 2500

Instruction Manual

Form 1013

December 2005

through the sensor head access hole after the

sensor is installed on the vessel. Connect the

displacer as shown in figure 8, locking the assembly

with the cotter springs provided. If a stem extension

is used between the displacer spud and the stem

end piece, make sure the nuts are tight at each end

of the stem. Install and tighten suitable cap screws in

the flanged connection to complete the installation.

A special travel stop may be provided on

top-mounted sensors to aid in servicing of the

sensor. This option prevents dropping the displacer

and stem when the displacer rod is disconnected.

Supply and Output Pressure

Connections

WARNING

To avoid personal injury or property

damage resulting from the sudden

release of pressure, do not install any

system component where service

conditions could exceed the limits

given in this manual. Use

pressure-relieving devices as required

by government or accepted industry

codes and good engineering practices.

Figure 9 shows dimensions, locations, and

connections for controller/transmitter installation. All

pressure connections to the controller/transmitter are

1/4-inch NPT female.

Supply Pressure

WARNING

Personal injury or property damage

may occur from an uncontrolled

process if the supply medium is not

clean, dry, oil-free air, or noncorrosive

gas. While use and regular

maintenance of a filter that removes

particles larger than 40 microns in

diameter will suffice in most

applications, check with a Fisher Field

office and Industry Instrument air

quality standards for use with

corrosive air or if you are unsure about

the proper amount or method of air

filtration or filter maintenance.

Figure 9. Controller/Transmitter Dimensions

and Connections

AP4158-D

E0859

176.3

6.94

OPTIONAL HEAT

INSULATOR

EXTENSION

5/6-18 UNC-2B

4 MOUNTING HOLES

ONj95.3/3.75 DBC

1/4-18 NPT

OUTPUT CONN

1/4-18 NPT

OUTLET CONN

PLUGGED

TYPE 67CFR

1/4-18 NPT

SUPPLY CONN

VENT

223.8

8.81

117.6

4.63

123.7

4.87

239.0

9.41

255.5

10.06

231.6

9.12

58.7

2.31

TOP VIEW

FRONT VIEW

INCH

BACK VIEW

Supply pressure must be clean, dry air or

noncorrosive gas that meets the requirements of ISA

Standard S7.3.

Use a suitable supply pressure regulator to reduce

the supply pressure to the normal operating supply

pressure shown in table 3. As shown in figure 9, a

Type 67FR filter/regulator mounts on the back of the

controller/transmitter case and mates with the supply

pressure connection on the controller/transmitter

case. Pipe the supply pressure to the IN connection

of the regulator. Typically, the Type 67FR

filter/regulator accepts supply pressures between 2.5

and 17 bar (35 and 250 psig). For specific regulator

limits, refer to the appropriate regulator instruction

manual.

If operating the controller or transmitter from a high

pressure source [up to 138 bar (2000 psig)], use a

high pressure regulator system, such as the Type

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