Fisher 249 series User manual

www.Fisher.com

D200100X012

Cageless 249 Series Displacer Sensors

Contents

Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scope of Manual 1. . . . . . . . . . . . . . . . . . . . . . . . . .

Description 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Type Number Description 2. . . . . . . . . . . . . . . . . .

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

Maintenance 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing the Displacer and Stem 3. . . . . . . . . . .

Replacing the Displacer, Cotter Spring,

Stem End Piece, and Displacer Spud 5. . . . . .

Replacing the Displacer Rod/Driver Assembly 5.

Replacing the Torque Tube 6. . . . . . . . . . . . . . . . .

Replacing the Torque Tube Arm and

Changing the Mounting 7. . . . . . . . . . . . . . . . . .

Parts Ordering 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Kits 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts List 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sensor Common Parts 8. . . . . . . . . . . . . . . . . . . .

Indicating Gauge 12. . . . . . . . . . . . . . . . . . . . . . . . .

Introduction

Scope of Manual

This instruction manual includes maintenance and

parts ordering information for the cageless 249

Series sensors.

Although a Type 249 sensor is usually shipped with

attached controller or transmitter, this manual does

not include operation, installation, calibration,

maintenance, and parts ordering information for the

controller/transmitter or for the complete unit. For

this information, refer to the appropriate controller/

transmitter instruction manual.

No person may install, operate or maintain a

cageless Type 249 Series sensor without first D

being 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 Fisher sales office.

Figure 1. Type 249V Sensor with DLC3000 Series

Digital Level Controller

W3120-3/ IL

Description

The 249 Series sensors are designed to measure

liquid level, interface level, or density/specific gravity

inside a process vessel.

A torque tube assembly (figure 2) and displacer

provide an indication of liquid level, interface level, or

density/specific gravity. The torque tube assembly

consists of a hollow torque tube with a shaft welded

inside it at one end and protruding from it at the

other end.

The unconnected end of the tube is sealed by a

gasket and clamped rigidly to the torque tube arm,

permitting the protruding end of the shaft to twist and

therefore transmit rotary motion. This allows the

interior of the torque tube to remain at atmospheric

pressure, thus eliminating packing and the

disadvantages of packing friction.

The displacer always exerts a downward force on

one end of the displacer rod. The other end of the

displacer rod rests on the knife-edge of the driver

bearing. A keyed shaft on the bearing end of the

Instruction Manual

Form 1803

September 2004 Cageless 249 Series Sensors

Cageless 249 Series Sensors Instruction Manual

Form 1803

September 2004

Figure 2. Typical Side-Mounted Cageless Displacer

KNIFE EDGE

BEARING

TRAVEL STOP

ASSEMBLY

DISPLACER ROD

DISPLACER

TORQUE TUBE

W1800-1*/IL

W0172-1*/IL

displacer fits into a socket on the outside of the

welded end of the torque tube assembly.

A change in liquid level, interface level, or

density/specific gravity buoys up the displacer by a

force equal to the weight of the liquid displaced.

Corresponding vertical movement of the displacer

results in angular movement of the displacer rod

around the knife edge. Since the torque tube

assembly is a torsional spring which supports the

displacer and determines the amount of movement

of the displacer rod for a given displacement

change, it will twist a specific amount for each

increment of buoyancy change. This rotation is

brought through the torque tube arm by the

protruding rotary shaft. A controller or transmitter

attached to the end of the rotary shaft converts the

rotary motion into varying pneumatic or electric

signals.

Type Number Description

DType 249BP—Class 150, 300, 600 steel

top-mounted sensor.

DType 249CP—Class 150, 300, 600 stainless

steel top-mounted sensor.

DType 249P—Class 900 and 1500 steel

top-mounted sensor

DType 249V—Class 125 or 250 cast iron or

Class 150, 300, 600, 900, or 1500 steel

side-mounted sensor.

All cageless 249 Series sensors have flanged

connections.

The Parts List section shows some Type 249 sizes

by construction, standard displacer lengths, and

standard materials. However, Type 249 parts are

available in a wide variety of materials of

construction, part dimensions, and other

specifications. Contact your Fisher sales office for

assistance in selection of specific materials,

dimensions, and specifications.

Educational Services

For information on available courses for 249 Series

displacer sensors, 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

Fisher does not assume responsibility

for the selection, use, or maintenance

of any product. Responsibility for the

selection, use, or maintenance of any

Fisher product remains solely with the

purchaser and end-user.

Maintenance

Sensor parts are subject to normal wear and must

be inspected regularly and replaced as necessary.

The frequency of inspection and replacement

depends upon the severity of service conditions.

WARNING

Always wear protective clothing and

eyewear when performing any

maintenance operations to avoid

personal injury.

Cageless 249 Series Sensors

Instruction Manual

Form 1803

September 2004

Avoid personal injury or property

damage resulting from the sudden

release of pressure. Before performing

any maintenance procedure:

DRelieve any process pressure in

the process vessel where the Type 249

sensor is installed.

DDrain the process liquid from the

process vessel.

DShut off any electrical or

pneumatic input to the controller or

transmitter attached to the Type 249

sensor and vent any pneumatic supply

pressure.

DUse caution when loosening

flange bolting or pipe plugs (key 26).

DRemove the controller or

transmitter from the torque tube arm

(key 3).

Before performing any maintenance

procedure requiring the handling of

the displacer, inspect the displacer

(key 10) to make sure process

pressure or liquids have not

penetrated the displacer.

The displacer in this unit is a sealed

container. If penetrated by process

pressure or liquid, the displacer may

hold pressure or hazardous liquid for

an extended period. A displacer that

has been penetrated by process

pressure or liquid may contain:

Dpressure as a result of being in a

pressurized vessel.

Dliquid that becomes pressurized

due to a change in temperature.

Dliquid that is flammable,

corrosive, or hazardous.

Sudden release of pressure, contact

with hazardous liquid, fire, or

explosion, which might result in

personal injury or property damage,

can occur if a displacer that is

retaining pressure or process liquid is

punctured, subjected to heat, or

repaired.

Handle the displacer with care.

Consider the characteristics of the

specific process liquid in use.

Check with your process or safety

engineer for any additional measures

that must be taken to protect against

process media.

Note

Except for gaskets (keys 13, 14),

trouble symptoms peculiar to specific

parts are discussed in the following

sections. Each section is specific to

these parts. Regardless of location,

gasket failure is indicated by leakage

in the gasket area. Every time a gasket

is removed, replace it with a new one

upon reassembly.

The procedures below apply to all sensor types

except where indicated. Key numbers used are

shown in the following illustrations:

DType 249BP—figure 5

DType 249CP—figure 6

DType 249P—figure 7

DType 249V—figure 8

Removing the Displacer and Stem

The displacer (key 10) is a sealed container. If the

displacer has been penetrated by process pressure

or liquid, it may hold pressure or hazardous liquid for

an extended period.

Process residue buildup on the displacer and stem

(key 24) may change displacer weight or

displacement. A bent stem or a dented or corroded

displacer can impair performance.

If the displacer rests against the travel stop, appears

to be overweight, or causes output drift or other

output inaccuracies, it may have been penetrated by

process pressure or liquid. Such a displacer may

contain pressure because it was in a pressurized

vessel, may contain process liquid that becomes

pressurized due to a change in temperature, and

may contain process liquid that is flammable,

hazardous or corrosive.

WARNING

Sudden release of pressure, contact

with hazardous liquid, fire, or

Cageless 249 Series Sensors Instruction Manual

Form 1803

September 2004

explosion, which may result in

personal injury or property damage,

can occur if a displacer that is

retaining pressure or process liquid is

punctured, subjected to heat, or

repaired.

Handle the displacer with care.

Note

On the Types 249V, 249P, and 249BP

with travel stop, the displacer must

come out with the sensor head (key 2)

or torque tube arm (key 3) before being

completely disconnected from the

displacer rod (key 7). If separating the

displacer and displacer rod, remove

the cotter spring (key 11).

CAUTION

Be careful not to let the displacer slip

and drop into the bottom of the

process vessel, as displacer damage

could result.

1. Before starting any maintenance procedure, be

sure the following safety actions are completed.

DRelieve process pressure in the process vessel

where the Type 249 sensor is installed.

DDrain the process liquid from the process

vessel.

DShut off any electrical or pneumatic input to the

controller or transmitter attached to the Type 249

sensor and vent any pneumatic supply pressure.

Remove the controller or transmitter from the torque

tube arm.

DUse caution when loosening flange bolting or

pipe plugs.

DBe sure process pressure or liquids have not

penetrated the displacer.

2. Support the sensor head (key 2) and the torque

tube arm (key 3). Remove the bolting that holds the

sensor head to the process vessel.

Figure 3. Type 249V Travel Stop Plate Positions

BJ8646-A/DOC

CAUTION

When removing a sensor from a

process vessel, the displacer may

remain attached to the displacer rod

and be lifted out with the sensor head

(key 2) when the sensor head is

removed. If separating the displacer

and displacer rod before removing the

sensor head, remove the cotter spring

(key 11).

Be careful not to let the displacer slip

and drop into the bottom of the

process vessel, as displacer damage

could result.

3. Carefully remove the sensor head or torque tube

arm. If the displacer comes out with the head or

torque tube arm, be careful not to damage the

displacer or bend the stem when setting the head or

arm down.

4. On the Type 249V, the travel stop plate can be

located in one of four positions as shown in figure 3.

With a standard or thin-walled displacer hanging free

Cageless 249 Series Sensors

Instruction Manual

Form 1803

September 2004

on the displacer rod, the rod should not touch the

plate. If it does, remove the plate and choose a

position where the rod will not touch the plate.

5. Follow the procedure for replacing the displacer,

displacer rod assembly, cotter spring, stem end

piece, and displacer spud as necessary.

Replacing the Displacer, Cotter Spring,

Stem End Piece, and Displacer Spud

The cotter spring (key 11), the ball on the displacer

rod/driver assembly (key 7), and the stem end piece

or displacer stem connector (key 23) may be either

too worn for a secure connection or so clogged or

corroded that the displacer does not pivot properly.

Replace these parts, as necessary.

CAUTION

If the displacer is to be disconnected

from the displacer rod before being

removed from the process vessel,

provide a suitable means of

supporting the displacer to prevent it

from dropping into the process vessel

and being damaged.

1. After following the proper procedure to remove

the sensor head and the displacer from the process

vessel, move the sensor assembly to a suitable

maintenance area. Support the assembly to avoid

damage to the displacer, displacer stem, displacer

rod/driver assembly, and associated parts.

2. To help support the displacer on a unit without

travel stop (Type 249BP, 249P, 249CP), install the

stem and stem end piece (or a threaded rod) into the

0.25 inch-28 UNF threaded hole in the displacer

spud or stem connector. On the Types 249BP with

travel stop, the groove pin (key 42) will secure the

displacer as long as the travel stop plate (key 41) is

installed and the sensor head (key 2) is in position.

3. Reach the cotter spring, displacer spud, ball end

of the displacer rod/driver assembly, stem end piece,

or displacer stem connector as follows:

DTop-Mounted Type 249BP, 249CP, and 249P

Sensors—By removing the pipe plug (key 26).

DSide-Mounted Type 249V Sensor—By

removing the process vessel bolting and pulling out

the torque tube arm (key 3). The inside of the

process vessel wall will cause the displacer to swing

up so it can be pulled out through the vessel

opening.

4. Remove the cotter spring to free the displacer or

stem end piece from the ball end of the displacer

rod/driver assembly. Lift the displacer or stem end

piece from the ball.

5. Replace worn or damaged parts as necessary.

Return the displacer or stem end piece to the

displacer rod/driver assembly. Install the cotter

spring.

6. Install the sensor head and controller/transmitter.

Calibrate the controller/transmitter following the

procedures given in the controller/transmitter

instruction manual.

Replacing the Displacer Rod/Driver

Assembly

The ball on the displacer rod/driver assembly (key 7)

may be either too worn for a secure connection or so

corroded that the displacer does not pivot properly.

Replace the displacer rod/driver assembly, if

necessary.

CAUTION

If the displacer is to be disconnected

from the displacer rod/driver assembly

before being removed from the

process vessel, provide a suitable

means of supporting the displacer to

prevent it from dropping into the

process vessel and being damaged.

1. After following the proper procedure to remove

the sensor head and the displacer from the process

vessel, move the sensor assembly to a suitable

maintenance area. Support the assembly to avoid

damage to the displacer, displacer stem, displacer

rod assembly, and associated parts.

2. Remove the controller/transmitter and displacer

(key 10). Then, remove the hex nuts (key 20) that

hold the torque tube arm (key 3) to the sensor head

(key 2). Separate the torque tube arm from the

sensor head.

3. Using the proper tool, loosen and then remove

the upper bearing driver bolt (key 5). Lift the

displacer rod/driver assembly from the knife edge of

the driver bearing (key 4). Separate the displacer

rod/driver assembly from the end of the torque tube

assembly (key 9).

4. If necessary, remove the bearing driver by

removing the lower bearing driver bolt. Install a new

bearing driver and bolts.

Cageless 249 Series Sensors Instruction Manual

Form 1803

September 2004

Figure 4. Torque Tube and Displacer Rod Assemblies

W0654-1/IL

W0145-1*/IL

DISPLACER ROD

ASSEMBLY

ROTARY SHAFT

TORQUE TUBE

OUTER TUBE END

POSITIONING PLATE

DRIER BEARING

REMOVAL OR INSTALLATION OF POSITIONING PLATE EXPLODED VIEW OF TORQUE TUBE AND DISPLACER ROD ASSEMBLY

5. If necessary, replace the displacer rod/driver

assembly and install it on the knife edge of the

bearing driver. Carefully fit the keyed shaft on the

bearing end of the displacer rod into a socket on the

outside of the welded end of the torque tube

assembly.

6. Install the sensor head and controller/transmitter.

Calibrate the controller/transmitter following the

procedures given in the controller/transmitter

instruction manual.

Replacing the Torque Tube

Corrosion or leakage through the outer end of the

torque tube is evidence of deterioration in the torque

tube assembly (key 9) or torque tube end gasket

(key 14). Erratic or nonexistent rotary shaft output

may occur if the socket on the inner end of the

torque tube assembly does not engage the bearing

end of the displacer rod assembly (key 7).

1. After following the proper procedure to remove

the sensor head and the displacer from the process

vessel, move the sensor assembly to a suitable

maintenance area. Support the assembly to avoid

damage to the displacer, displacer stem, displacer

rod assembly, and associated parts.

2. Remove the controller/transmitter and displacer

(key 10). Then, remove the hex nuts (key 20) that

hold the torque tube arm (key 3) to the sensor head

(key 2). Separate the torque tube arm from the

sensor head.

3. Remove the nuts (key 18) and retaining flange

(key 6) holding the positioning plate (key 8) at the

end of the torque tube arm.

CAUTION

If the displacer is still attached to the

displacer rod at this point, be careful

not to let the torque tube assembly

slip when using the screwdriver

leverage procedure in steps 4 and 6.

Sudden release of the displacer would

cause damage.

4. Remove the positioning plate (key 8) by freeing

its two lugs.

The vertical lug fits into a hole in the flange of the

torque tube arm (top of figure 4). The horizontal lug

(hidden behind the screwdriver at the bottom of

figure 4) fits into a slot in the outer tube end of the

torque tube assembly (the figure 4 exploded view

shows this lug to the right of the outer tube end).

The positioning plate may be pried away from the

torque tube arm and outer tube end if the displacer

already has been disconnected from the displacer

rod. However, if the displacer is still connected to the

displacer rod, place a screwdriver blade in the slots

of the positioning plate and outer tube end as shown

in figure 4. Slowly turn the positioning plate to

release its lug from the torque tube arm. Then,

carefully turn the plate back to allow the displacer to

come to rest and slip the other lug of the plate from

its slot in the outer tube end.

Cageless 249 Series Sensors

Instruction Manual

Form 1803

September 2004

5. Pull the torque tube assembly and tube end

gasket out of the torque tube arm.

6. Install a new tube end gasket and insert the

torque tube assembly into the torque tube arm as

shown in figure 4. Rotate the torque tube assembly

until its socket mates with the driver member on the

displacer rod assembly and so the outer tube flange

rests against the gasket. With a thumb on the upper

portion of the positioning plate and a screwdriver in

the slots as shown in figure 4, rotate the plate and

press the lug on the plate into the hole in the torque

tube arm.

7. Install the retaining flange and secure it with four

nuts (key 18), being sure to tighten all nuts evenly.

8. Install the sensor head and controller/transmitter.

Calibrate the controller/transmitter following the

procedures given in the controller/transmitter

instruction manual.

Replacing the Torque Tube Arm and

Changing the Mounting

Looseness of the driver bearing (key 4), wear on its

knife-edged surface, or a bent, worn, or corroded

displacer rod assembly (key 7) may impair

performance. Be especially sure to check the ball on

the displacer rod.

1. After following the proper procedure to remove

the sensor head and the displacer from the process

vessel, move the sensor assembly to a suitable

maintenance area. Support the assembly to avoid

damage to the displacer, displacer stem, displacer

rod assembly, and associated parts.

2. Remove the controller/transmitter and displacer

(key 10). Then, remove the hex nuts (key 20) that

hold the torque tube arm (key 3) to the sensor head

(key 2). Separate the torque tube arm from the

sensor head.

3. Follow the proper procedure to remove the torque

tube assembly (key 9).

4. Remove the bearing bolts (key 5), displacer rod

assembly, and driver bearing.

Note

Be sure to install the driver bearing so

its knife edge is pointing up when the

torque tube arm is mounted in the

desired orientation. Since changing

the mounting position of the torque

tube arm by 180_will change

controller or transmitter action from

direct to reverse or vice versa,

controller/transmitter action must be

reversed from what it was before the

mounting method was changed.

5. Install the driver bearing, displacer rod assembly,

and bearing bolts (key 5) into the torque tube arm.

Install a new arm gasket. Install the torque tube arm

on the sensor head or process vessel and secure it

with the proper bolting (keys 19 and 20).

6. Install the torque tube assembly. Install the

displacer.

7. Install the sensor head and controller/transmitter.

Calibrate the controller/transmitter following the

procedures given in the controller/transmitter

instruction manual.

Parts Ordering

Whenever corresponding with your Fisher sales

office about this equipment, always mention the

sensor serial number. Each sensor is assigned a

serial number which is stamped on a nameplate (key

54, not shown) attached to the torque tube arm. This

same number also appears on the controller/

transmitter nameplate when a complete controller/

transmitter-sensor unit is shipped from the factory.

When ordering a replacement part, be sure to

include the 11-character part number from the

following parts list.

Note

Use only genuine Fisher replacement

parts. Components that are not

supplied by Fisher should not, under

any circumstances, be used in any

Fisher instrument. Use of components

not supplied by Fisher will void your

warranty, might adversely affect the

performance of the instrument, and

might jeopardize worker and

workplace safety.

Cageless 249 Series Sensors Instruction Manual

Form 1803

September 2004

20A7432-B

20A7433-B/DOC

Figure 5. Type 249BP Sensor Construction

Note

Fisher does not assume responsibility

for the selection, use, or maintenance

of any product. Responsibility for the

selection, use, or maintenance of any

Fisher product remains solely with the

purchaser and end-user.

Parts Kits

Key Description Part Number

SENSOR PARTS KIT

Kit contains keys 9, 11, 13, 14

For Type 249BP R249X000012

Parts List

Key Description Part Number

Sensor Common Parts

2 Sensor Head

For 249BP, 249CP, 249P

(If a part number is required, contact

your Fisher sales office.) Not req’d for 249V

3 Torque Tube Arm

For 249V

(If a part number is required, contact

your Fisher sales office.)

4 Driver Bearing, S31600 1K539536042

5 Driver Bearing Bolt, S31600 (2 req’d) 1K539435072

Cageless 249 Series Sensors

Instruction Manual

Form 1803

September 2004

Figure 6. Type 249CP Sensor Construction

30A7434-B/DOC

Key Description Part Number

6 Retaining Flange

(If a part number is required, contact

your Fisher sales office.)

7 Rod/Driver Assy, S31600

For 249BP

S31600 1B5461000A2

For 249CP 1F9579000A2

For 249P 1B5698000A2

For 249V 1B5787000A2

8 Positioning Plate, S31600 1B812325082

9* Torque Tube Assy(1)

For 249BP

N05500 (Nickel Alloy, K-Monel)

Std wall 1K4493X0012

Heavy wall 1K4497X0012

Thin wall 1K4495X0012

Key Description Part Number

9* Torque Tube Assy(1) (cont’d)

For 249CP

S31600

Std wall 1K4505000A2

Heavy wall 1K4503000A2

For 249P

N05500

Std wall 1K4499X0012

Thin wall 1K4501X0012

For 249V

N05500

Std wall 1K4499X0012

Thin wall 1K4501X0012

*Recommended spare parts

1. This part is available in a wide variety of materials of construction, part dimensions, or

other specifications. Listed here are standard or typical materials, dimensions, or

specifications. Contact your Fisher sales office for assistance in selection of specific

materials, dimensions, or specifications.

Cageless 249 Series Sensors Instruction Manual

Form 1803

September 2004

Figure 7. Type 249P Sensor Construction

20A2094-C/ DOC

SECTION A−A

Key Description Part Number

10 Displacer(1)

For 249BP, 249CP

3 inch X 14 inches (1600 psi), S30400 15A3848X012

3 inch x 14 inches (1600 psi), S31600 15A3848X022

2 inch x 32 inches (1500 psi), S30400 15A4586X012

2 inch x 32 inches (1500 psi), S31600 15A4586X022

1.5 inch x 60 inches (1800 psi), S30400 15A5017X042

1.375 inch x 72 inches (1400 psi), S30400 1C1685000A2

For 249P

2.75 inch x 14 inches (6000 psi) S30400 1L7548000A2

2.75 inch x 14 inches (6000 psi) S31600 1L7548X0012

2.875 inch x 14 inches (4000 psi) S30400 1L9152000A2

2.875 inch x 14 inches (4000 psi) S31600 1L9152X0012

Key Description Part Number

10 Displacer(1) (cont’d)

For 249P (cont’d)

1.75 inch x 32 inches (4200 psi) S30400 15A4666X032

1.75 inch x 32 inches (4200 psi) S31600 15A4666X022

1.9062 inch x 32 inches (3400 psi) S30400 15A4581X042

1.9062 inch x 32 inches (3400 psi) S31600 15A4581X012

For 249V

3 inch x 10 inches (1600 psi), S30400

(vertical or horizontal mounting) 1J7062000A2

3 inch x 10 inches (1600 psi), S31603 (NACE)

(vertical or horizontal mounting) 1J7062X0022

3 inch x 14 inches (1600 psi), S30400 15A3848X012

3 inch x 14 inches (1600 psi), S31600 15A3848X022

*Recommended spare parts

1. This part is available in a wide variety of materials of construction, part dimensions, or

other specifications. Listed here are standard or typical materials, dimensions, or

specifications. Contact your Fisher sales office for assistance in selection of specific

materials, dimensions, or specifications.

Cageless 249 Series Sensors

Instruction Manual

Form 1803

September 2004

Key Description Part Number

10 Displacer(1) (cont’d)

For 249V (cont’d)

3 inch x 14 inches (1500 psi), S31603 (NACE)15A3848X312

2 inch x 32 inches (1500 psi), S30400 15A4586X012

2 inch x 32 inches (1500 psi), S31600 15A4586X022

2 inch x 32 inches (1500 psi), S31603 (NACE)15A4586X162

1.375 inch x 48 inches (1800 psi), S30400 15A5007X022

1.5 inch x 60 inches (1800 psi), S30400 15A5017X042

11* Cotter Spring(1), N04400 (Monel) (2 req’d) 1A517942022

13* Arm Gasket(1)

For 249BP, 249CP

thru Class 600, graphite/SST 1E5629X0072

For 249P

Class 900 & 1500 graphite/SST 1A1297X0022

14* Tube End Gasket(1)

For 249BP, 249CP, or 249V

thru Class 600, graphite/SST 0Y0876X0052

For 249P

Class 900 & 1500 graphite/SST 0Y0876X0022

15 Stud Bolt(1), steel B7 (4 req’d)

For 249BP, 249CP, 249V

(249V thru Class 600) 12A8835X132

For 249P

Class 900 & 1500 1K6235X0152

16 Groove Pin, S31600

For 249BP, 249CP, 249P 1A361828992

18 Hex Nut(1), steel B7 (4 req’d)

For 249BP, 249CP, and 249V

thru Class 600 1A377324072

For 249P

Class 900 & 1500 1A3772X0892

19 Bolt Stud(1), steel B7 (4 req’d)

For 249B, 249CP

thru Class 600 1A354431012

For 249P

Class 900 & 1500 1A4212X0042

20 Hex Nut(1), steel (8 req’d)

For 249BP, 249CP

thru Class 600 1A376024072

For 249P

Class 900 & 1500 1C1727X0592

23 Displacer Stem End Piece(1), S31600

For 249BP, 249CP

w/out travel stop 1A393335072

For 249BP

w/travel stop 1E920235072

For 249P

w/out travel stop 1A393335072

For 249V

Stem End Piece 1A943635072

Rod Connector 1A943135072

24 Displacer Stem(1)

When ordering a replacement displacer stem,

specify length and desired material.

25 Hex Nut(1), B8M (2 req’d) 1A391535252

26 Pipe Plug(1), steel

For 249BP 1A398524182

For 249CP 1B765638992

For 249P 1A444228992

35 Heat Insulator Ass’y (use only when specified) 22A0033X012

36 Shaft Coupling (for heat insulator ass’y)

Use only when specified 1A577935032

Figure 8. Type 249V Sensor Construction

30A7435-C/DOC

Key Description Part Number

37 Shaft Extension (for heat insulator ass’y)

Use only when specified 1B681540022

38 Set Screw (for heat insulator ass’y) (2 req’d)

Use only when specified 1E6234X0022

39 Cap Screw (for heat insulator ass’y) (4 req’d)

Use only when specified 1A3816K0012

40 Cap Screw (for heat insulator ass’y) (4 req’d)

Use only when specified 1V239528982

41 Travel Stop Plate, steel

For 249V 1J731028992

For 249BP 1E913136072

42 Groove Pin (travel stop pin), SST

For 249BP 1A524635032

not req’d for 249V

43 Cap Screw, hex head, steel (2 req’d)

For 249BP 1A391724052

44 Stud Bolt(1), steel B7

For 249BP

w/2-inch top flange, Class 150 (4 req’d) 1J698131012

w/2-inch top flange, Class 300 (8 req’d) 1L515131012

*Recommended spare parts

1. This part is available in a wide variety of materials of construction, part dimensions, or

other specifications. Listed here are standard or typical materials, dimensions, or

specifications. Contact your Fisher sales office for assistance in selection of specific

materials, dimensions, or specifications.

Cageless 249 Series Sensors Instruction Manual

Form 1803

September 2004

Key Description Part Number

45 Hex Nut(1), steel

For 249BP

w/2-inch top flange, Class 150 (8 req’d) 1A376024072

w/2-inch top flange, Class 300, 600 (16 req’d) 1A376024072

46 Hex Nut, steel (4 req’d)

For 249V 1A345735252

52 Travel Stop Post, S31600 (4 req’d)

For 249V 1C118535072

53 Washer (for heat insulator ass’y) (4 req’d)

Use only when specified 1B865928982

54 Nameplate

55 Drive Screw

56 NACE Tag

57 Wire

Key Description Part Number

Indicating Gauge

*Gauge, steel/brass (0-100%) (3-15 psi) 21B9701X012

Mounting Bracket, steel 21B9696X012

Hex Nut, SA194-2H/zn pl (2 req’d) 1E944024112

Lock Washer, plated carbon steel (2 req’d) 1C225728982

Connector Tube, brass 15A6002X212

Pipe Tee, A197 malleable iron, galvanized 1C597547362

Pipe Plug, C36000 (brass, B16) 1A6495X0052

Pipe Nipple, SA106-B/galv/zn 1C678926232

Machine Screw, plated carbon steel (3 req’d) 1K433628992

U-bolt, steel

For use w/fabricated arm 1D764224092

For use w/cast arm 1N641924092

1. This part is available in a wide variety of materials of construction, part dimensions, or

other specifications. Listed here are standard or typical materials, dimensions, or

specifications. Contact your Fisher sales office for assistance in selection of specific

materials, dimensions, or specifications.

*Recommended spare parts

Fisher

Marshalltown, Iowa 50158 USA

Cernay 68700 France

Sao Paulo 05424 Brazil

Singapore 128461

Emerson Process Management

www.Fisher.com

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are

not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability.