Fisher 249 Series Instruction Manual

Instruction Manual

Form 1803
September 2004

Cageless 249 Series Sensors

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. . . . . . . . . . . . . . . . . . . . . . . . .

W3120-3 / IL

Figure 1. Type 249V Sensor with DLC3000 Series

Digital Level Controller

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 D carefully reading and
understanding the contents of this manual. If you
have any questions about these instructions, contact
your Fisher sales office.

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

www.Fisher.com

D200100X012

Cageless 249 Series Sensors

TRAVEL STOP
ASSEMBLY

W1800-1*/IL

DISPLACER ROD

DISPLACER

TORQUE TUBE

W0172-1*/IL

Figure 2. Typical Side-Mounted Cageless Displacer

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

D Type 249BP—Class 150, 300, 600 steel

top-mounted sensor.

D Type 249CP—Class 150, 300, 600 stainless

steel top-mounted sensor.

D Type 249P—Class 900 and 1500 steel

top-mounted sensor

KNIFE EDGE
BEARING

Instruction Manual

Form 1803

September 2004

D Type 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: [phone] or
Phone: [phone]
FAX: [phone]
e-mail: [e-mail]

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.

2

Instruction Manual

Form 1803
September 2004

Cageless 249 Series Sensors

Avoid personal injury or property
damage resulting from the sudden
release of pressure. Before performing
any maintenance procedure:

D Relieve any process pressure in
the process vessel where the Type 249
sensor is installed.

D Drain the process liquid from the
process vessel.

D Shut off any electrical or
pneumatic input to the controller or
transmitter attached to the Type 249
sensor and vent any pneumatic supply
pressure.

D Use caution when loosening
flange bolting or pipe plugs (key 26).

D Remove 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.

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:

D Type 249BP—figure 5
D Type 249CP—figure 6
D Type 249P—figure 7
D Type 249V—figure 8

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:

D pressure as a result of being in a
pressurized vessel.

D liquid that becomes pressurized
due to a change in temperature.

D liquid 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.

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

3

Cageless 249 Series Sensors

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).

Instruction Manual

Form 1803

September 2004

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.

D Relieve process pressure in the process vessel

where the Type 249 sensor is installed.

D Drain the process liquid from the process

vessel.

D Shut 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.

D Use caution when loosening flange bolting or
pipe plugs.

D Be 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.

BJ8646-A/DOC

Figure 3. Type 249V Travel Stop Plate Positions

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

4

Instruction Manual

Form 1803
September 2004

Cageless 249 Series Sensors

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:

D Top-Mounted Type 249BP, 249CP, and 249P
Sensors—By removing the pipe plug (key 26).

D Side-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.

5

Cageless 249 Series Sensors

W0654-1/IL

REMOVAL OR INSTALLATION OF POSITIONING PLATE

Figure 4. Torque Tube and Displacer Rod Assemblies

Instruction Manual

Form 1803

September 2004

DISPLACER ROD
ASSEMBLY

ROTARY SHAFT

TORQUE TUBE

OUTER TUBE END

POSITIONING PLATE

W0145-1*/IL

EXPLODED VIEW OF TORQUE TUBE AND DISPLACER ROD ASSEMBLY

DRIER BEARING

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.

6

Instruction Manual

Form 1803
September 2004

Cageless 249 Series Sensors

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.

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.

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.

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.

7

Cageless 249 Series Sensors

Instruction Manual

Form 1803

September 2004

20A7432-B
20A7433-B/DOC

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

8

Figure 5. Type 249BP Sensor Construction

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

Instruction Manual

Form 1803
September 2004

Cageless 249 Series Sensors

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

For 249BP

N05500 (Nickel Alloy, K-Monel)

Std wall 1K4493X0012
Heavy wall 1K4497X0012
Thin wall 1K4495X0012

*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.

(1)

Figure 6. Type 249CP Sensor Construction

Key Description Part Number

9* Torque Tube Assy

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

(1)

(cont’d)

9

Cageless 249 Series Sensors

Instruction Manual

Form 1803

September 2004

SECTION A−A

A

20A2094-C / DOC

Figure 7. Type 249P Sensor Construction

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

A

Key Description Part Number

10 Displacer

(1)

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

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

3 inch x 14 inches (1600 psi), S30400 15A3848X012
3 inch x 14 inches (1600 psi), S31600 15A3848X022

(cont’d)

(vertical or horizontal mounting) 1J7062000A2

(vertical or horizontal mounting) 1J7062X0022

10

*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.

Instruction Manual

Form 1803
September 2004

Cageless 249 Series Sensors

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

11* Cotter Spring

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

13* Arm Gasket

(1)

, N04400 (Monel) (2 req’d) 1A517942022

(1)

For 249BP, 249CP

thru Class 600, graphite/SST 1E5629X0072

For 249P

14* Tube End Gasket

Class 900 & 1500 graphite/SST 1A1297X0022

(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

23 Displacer Stem End Piece

Class 900 & 1500 1C1727X0592

(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

24 Displacer Stem

Rod Connector 1A943135072

(1)

When ordering a replacement displacer stem,

specify length and desired material.
25 Hex Nut
26 Pipe Plug

(1)

, B8M (2 req’d) 1A391535252

(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

30A7435-C/DOC

Figure 8. Type 249V Sensor Construction

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.

11

Cageless 249 Series Sensors

Instruction Manual

Form 1803

September 2004

Key Description Part Number

45 Hex Nut

46 Hex Nut, steel (4 req’d)

52 Travel Stop Post, S31600 (4 req’d)

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

54 Nameplate
55 Drive Screw
56 NACE Tag
57 Wire

(1)

For 249BP

For 249V 1A345735252

For 249V 1C118535072

Use only when specified 1B865928982

, steel

w/2-inch top flange, Class 150 (8 req’d) 1A376024072
w/2-inch top flange, Class 300, 600 (16 req’d) 1A376024072

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

*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.

Fisher is a mark owned by Fisher Controls International LLC, a member of the Emerson Process Management business division of Emerson
Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their respective owners.

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.
We reserve the right to modify or improve the designs or specifications of such products at any time without notice.

Fisher does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and
maintenance of any Fisher product remains solely with the purchaser and end-user.

Emerson Process Management

Fisher

Marshalltown, Iowa 50158 USA
Cernay 68700 France
Sao Paulo 05424 Brazil
Singapore 128461

www.Fisher.com

12

EFisher Controls International LLC 1977, 2004; All Rights Reserved Printed in USA