Instruction Manual
D103288X012
Fisher™ 249VS Cageless Displacer Sensor
249VS Sensor
May 2022
Contents
Introduction 1.................................
Scope of Manual 1.............................
Description 1.................................
Educational Services 3.........................
Installation 3..................................
Mounting the Sensor on the Process Vessel 4......
Maintenance 5.................................
Removing the Displacer and Stem 6..............
Replacing the Displacer, Cotter Spring,
Stem End Piece, and Displacer Spud 8..........
Replacing the Displacer Rod/Driver Assembly 8....
Replacing the Torque Tube 9....................
Replacing the Torque Tube Arm and
Changing the Mounting Position 10............
Simulation of Process Conditions for
Calibration of Fisher Level Controllers
and Transmitters 11............................
Parts Ordering 11...............................
Parts Kits 12...................................
Parts List 12...................................
Sensor Common Parts 12.......................
Figure 1. Fisher 249VS Sensor with FIELDVUE
DLC3010/DLC3020f Digital Level Controller
W9355-1
™
Introduction
Scope of Manual
This instruction manual includes maintenance and parts ordering information for the cageless Fisher 249VS sensor.
Although a 249VS sensor is usually shipped with an attached controller or transmitter, this manual does not include
operation, installation, calibration, maintenance, or parts ordering information for the controller/transmitter or for the
complete unit. For this information, refer to the appropriate controller/ transmitter instruction manual.
Do not install, operate, or maintain a 249VS sensor without being fully trained and qualified in valve,
actuator, and accessory installation, operation, and maintenance. To avoid personal injury or property
damage, it is important to carefully read, understand, and follow all of the contents of this manual,
including all safety cautions and warnings. If you have any questions about these instructions contact
your Emerson sales office
Description
The 249VS sensor is designed to measure liquid level, interface level, or density/specific gravity inside a process vessel.
before proceeding.
www.Fisher.com
249VS Sensor
May 2022
Instruction Manual
D103288X012
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.
Figure 2. Side‐Mounted Cageless Wafer‐Style Sensor Assembly
TRAVEL STOP
ASSEMBLY
KNIFE EDGE BEARING
W1800‐1
DISPLACER ROD
DISPLACER
TORQUE TUBE
W9353
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 displacer rod 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. Figure 3 shows how the controller or transmitter mounts on the torque tube
arm.
The 249VS wafer‐style sensor mates with cast iron CL125 flat face and CL250 raised face flanges, and CL150, 300, 600,
900, and 1500 raised face steel flanges. The 249VS is also available with CL600, 900, 1500, and 2500 butt weld end
process connections.
Unless otherwise noted, all NACE references are to NACE MR0175‐2002.
The Parts List section shows some standard 249VS displacer lengths. Table 1 contains displacer and torque tube
materials. However, 249VS parts are available in a wide variety of materials of construction, part dimensions, and
other specifications. Contact your Emerson sales office
for assistance in selection of specific materials, dimensions,
and specifications.
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Instruction Manual
D103288X012
Figure 3. Torque Tube Arm Exploded View Showing Controller or Transmitter Mounting
249VS Sensor
May 2022
CONTROLLER OR TRANSMITTER
(DLC3010/DLC3020f
SHOWN)
X1469
RETAINING
FLANGE
ROTARY SHAFT
POSITIONING
PLATE
MOUNTING HOLES ACCEPT
FOUR STUDS OR CAP SCREWS
DEPENDING ON CONTROLLER OR
TRANSMITTER
OUTER
TUBE END
GASKET
HEX NUTS OR CAP
SCREWS DEPENDING ON
CONTROLLER OR TRANSMITTER
TORQUE
TUBE ARM
Table 1. Displacer and Torque Tube Materials
Part Standard Material Other Materials
Displacer 304 Stainless Steel 316 Stainless Steel, N10276, N04400, Plastic, and Special Alloys
Displacer Stem, Driver Bearing,
Displacer Rod and Driver
Torque Tube N05500
1. N05500 is not recommended for spring applications above 232_C (450_F). Contact your Emerson sales office or application engineer if temperatures exceeding
this limit are required.
316 Stainless Steel N10276, N04400, other Austenitic Stainless Steels, and Special Alloys
(1)
316 Stainless Steel, N06600, N10276
Educational Services
For information on available courses for 249VS sensors, as well as a variety of other products, contact:
Emerson Automation Solutions
Educational Services - Registration
Phone: 1-641-754-3771 or 1-800-338-8158
E-mail: education@emerson.com
emerson.com/fishervalvetraining
Installation
WARNING
To avoid personal injury or property damage resulting from the sudden release of pressure:
D Always wear protective clothing, gloves, and eyewear when performing any installation operations.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
D If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section of this
instruction manual.
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249VS Sensor
May 2022
Instruction Manual
D103288X012
The 249VS is installed directly on the vessel as shown in figure 4. The sensor mounts on the side of the vessel using an
NPS 4 flat face or raised face flange.
Because the displacer hangs inside the vessel, provide a stillwell around the displacer if the fluid is in a state of constant
agitation to avoid excessive turbulence around the displacer. For interface or fluid level applications, install a gauge
glass on the vessel.
Figure 4. Fisher 249VS Sensor Side Mounted on Vessel
NPS 4 RF FLANGE
DISPLACER
STILLWELL
NOTE:
1STILLWELL REQUIRED AROUND DISPLACER IF THE FLUID IS IN A STATE OF
CONTINUOUS AGITATION
W9356-1
249VS
1
Mounting the Sensor on the Process Vessel
NOTICE
If inserting the displacer into the vessel before attaching it to the displacer rod, provide a means of supporting the displacer
to prevent it from dropping into the vessel and being damaged.
Install the sensor wafer body on the vessel using the following procedure.
Attach the displacer to the displacer rod (see figure 5) before installing the sensor on the vessel.
1. Place a connecting flange gasket on the sensor assembly.
2. Install four line flange studs and nuts in the connecting flange at locations that correspond to the sensor mounting
lug locations.
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Instruction Manual
D103288X012
Figure 5. Displacer and Displacer Rod Connections
COTTER SPRING
DISPLACER ROD
DISPLACER STEM
EXTENSION
LOCKING NUTS
DISPLACER SPUD
249VS Sensor
May 2022
3. Insert the displacer and the 249VS sensor into the process connection/vessel.
4. Place a blind flange on the back of the sensor and lightly secure (tightening nuts enough to hold wafer body and
gasket in place) using four line flange bolt nuts, centering the connecting flange gasket and sensor on the vessel
connecting flange.
5. Install the remaining line flange bolts and nuts.
6. Tighten all nuts in a crisscross fashion.
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, gloves, and eyewear when performing any maintenance operations to avoid personal
injury.
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 249VS 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 249VS sensor and vent any
pneumatic supply pressure.
D Use caution when loosening flange bolting.
D Remove the controller or transmitter from the torque tube arm (key 1).
Before performing any maintenance procedure requiring the handling of the displacer, inspect the displacer (key 9) 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:
5
249VS Sensor
May 2022
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, hazardous, or corrosive.
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. Damage to the displacer will decrease its ability to withstand process pressure.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
Note
Except for gaskets (key 7), trouble symptoms peculiar to specific parts are discussed in the following sections. Each section is
specific to these parts. Gasket failure is indicated by leakage in the gasket area. Every time a gasket is removed, replace it with a
new one upon reassembly.
Instruction Manual
D103288X012
Refer to figure 8 or 9 for key number locations.
Removing the Displacer and Stem
The displacer (key 9) 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 19) 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 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 a 249VS with travel stop, the displacer must come out with the torque tube arm (key 1) before being completely disconnected
from the displacer rod assembly (key 14). If separating the displacer and displacer rod, remove the cotter spring (key 8).
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Instruction Manual
D103288X012
249VS Sensor
May 2022
NOTICE
Be careful not to let the displacer slip and drop into the bottom of the process vessel, as displacer damage could result.
When removing a sensor assembly from a process vessel, the displacer may remain attached to the displacer rod and
removed with the sensor assembly.
If the displacer is removed with the sensor assembly, be careful not to damage the displacer or bend the displacer stem
when setting the sensor assembly down.
If separating the displacer and displacer stem during the removal of the sensor assembly from the process vessel, remove
the cotter spring (key 8) and separate the displacer/displacer stem from the sensor assembly.
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 249VS 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 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. Carefully remove the torque tube arm.
3. On the 249VS, the travel stop plate can be located in one of four positions, as shown in figure 6.
For proper operation in the target application, the displacer rod must not touch either plate over the expected
range of process conditions.
D When the displacer is completely submerged in the upper fluid, the net load of weight minus buoyancy must be
low enough to allow the displacer rod to be above the lower plate.
D When the displacer is completely submerged in the lower fluid, the net load of weight minus buoyance must be
high enough to keep the displacer rod from hitting the upper plate.
If necessary, remove the place and choose a position where the rod will not touch the plate.
4. Follow the procedure for replacing the displacer, displacer rod assembly, cotter spring, stem end piece, and
displacer spud as necessary.
Figure 6. Fisher 249VS Travel Stop Plate Positions
4
LOW
BJ8646‐A
1
HIGH
2
INTERMEDIATE
3
INTERMEDIATE
7
249VS Sensor
May 2022
Instruction Manual
D103288X012
Replacing the Displacer, Cotter Spring, Stem End Piece, and Displacer
Spud
The cotter spring (key 8), the ball on the displacer rod/driver assembly (key 14), and the stem end piece or displacer
stem connector (key 18) 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.
NOTICE
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 torque tube arm assembly 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. Reach the cotter spring, displacer spud, ball end of the displacer rod/driver assembly, stem end piece, or displacer
stem connector as follows:
Remove the process vessel bolting and pull out the torque tube arm assembly (key 1). The inside of the process
vessel wall will cause the displacer to swing up so it can be pulled out through the vessel opening.
3. 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.
4. Replace worn or damaged parts as necessary. Return the displacer or stem end piece to the displacer rod/driver
assembly. Install the cotter spring.
5. Install the 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 14) 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.
NOTICE
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 torque tube arm assembly 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 9).
3. Remove the nuts (key 13) and retaining flange (key 12) at the end of the torque tube arm.
4. Remove the positioning plate (key 21) by freeing its two lugs.
The vertical lug fits into a hole in the flange of the torque tube arm (top of figure 7, left). The horizontal lug (hidden
behind the screwdriver at the bottom of figure 7, left) fits into a slot in the outer tube end of the torque tube
assembly (the figure 7 exploded view shows this lug to the right of the outer tube end).
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Instruction Manual
D103288X012
249VS Sensor
Place a screwdriver blade in the slots of the positioning plate and outer tube end as shown in figure 7. 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.
Figure 7. Torque Tube and Displacer Rod Assemblies
DISPLACER ROD
ASSEMBLY
ROTARY
SHAFT
W0145‐2
GASKET
TORQUE TUBE
OUTER TUBE END
POSITIONING PLATE
DRIVER BEARING
May 2022
W0654‐2
REMOVAL OR INSTALLATION OF POSITIONING PLATE
EXPLODED VIEW OF TORQUE TUBE AND DISPLACER ROD ASSEMBLY
5. Pull the torque tube assembly out of the torque tube arm. Remove the tube end gasket (key 17) and discard (a new
gasket will be installed in step 9). Clean and inspect the gasket mating surfaces.
6. Using the proper tool, loosen and then remove the upper bearing driver bolt (key 4). Lift the displacer rod/driver
assembly from the knife edge of the driver bearing (key 3).
7. Visually inspect the bearing driver for corrosion or wear. If replacement is necessary, remove the bearing driver by
removing the lower bearing driver bolt. Install a new bearing driver and the lower bearing driver bolt.
8. Install the new displacer rod/driver assembly on the knife edge of the bearing driver. Install the upper bearing driver
bolt (key 4), but do not tighten.
9. Insert new tube end gasket into recess in torque tube arm.
10. Insert the torque tube assembly and rotate until its socket mates with the displacer rod assembly and so that the
outer tube flange rests against the gasket.
11. With a thumb on the upper portion of the positioning plate and a screwdriver in the slots as shown in figure 7,
rotate the plate and press the lug on the plate into the hole in the torque tube arm (this will preload the torque
tube).
12. Install the retaining flange and secure it with four nuts (key 13), being sure to tighten all nuts evenly.
13. Tighten the upper bearing driver bolt (key 4). It will be necessary to put slight pressure on the displacer rod/driver
assembly to access the upper bearing driver bolt.
14. Install the 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 10) or torque tube end gasket (key 17). 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 14).
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249VS Sensor
May 2022
Instruction Manual
D103288X012
NOTICE
Support the sensor assembly to avoid damage to the displacer, displacer stem, displacer rod assembly, and associated
parts.
1. After following the proper procedure to remove the sensor assembly from the process vessel, move the sensor
assembly to a suitable maintenance area.
2. Remove the controller/transmitter and displacer (key 9).
3. Remove the nuts (key 13) and retaining flange (key 12) holding the positioning plate (key 21) at the end of the
torque tube arm.
NOTICE
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 21) by freeing its two lugs.
The vertical lug fits into a hole in the flange of the torque tube arm (top of figure 7). The horizontal lug (hidden
behind the screwdriver at the bottom of figure 7) fits into a slot in the outer tube end of the torque tube assembly
(the figure 7 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 7. 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.
5. Pull the torque tube assembly and tube end gasket out of the torque tube arm. Remove the tube end gasket
(key 17) and discard (a new gasket will be installed in step 6). Clean and inspect the gasket mating surfaces.
6. Install a new tube end gasket into recess in torque tube arm.
7. Insert the torque tube assembly into the torque tube arm as shown in figure 7. 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 7, rotate the plate and press the lug on the plate into the hole in the torque tube arm (this will
preload the torque tube).
8. Install the retaining flange and secure it with four nuts (key 13), being sure to tighten all nuts evenly.
9. 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 Position
Looseness of the driver bearing (key 3), wear on its knife‐edged surface, or a bent, worn, or corroded displacer rod
assembly (key 14) may impair performance. Be especially sure to check the ball on the displacer rod.
NOTICE
Support the sensor assembly to avoid damage to the displacer, displacer stem, displacer rod assembly, and associated
parts.
10
Instruction Manual
D103288X012
1. After following the proper procedure to remove the sensor assembly and the displacer from the process vessel,
move the sensor assembly to a suitable maintenance area.
2. Remove the controller/transmitter and displacer/displacer stem (key 9).
3. Follow the proper procedure to remove the torque tube assembly (key 10).
4. Remove the bearing bolts (key 4), 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 bearing driver and the lower bearing bolt into the torque tube arm. Place the rod/driver assembly on the
knife‐edged surface of the driver bearing. Install the bolt and tighten both the top and the bottom bearing bolts.
6. Install a new tube end gasket (key 17) and torque tube into the torque tube arm. Install the controller/transmitter
and attach the displacer/displacer stem to the rod/driver assembly.
7. Install the sensor assembly to the process vessel and calibrate the controller/transmitter following the procedures
given in the controller/transmitter instruction manual.
8. Calibration of the controller/transmitter can be done prior to installing of the sensor assembly to the process vessel
using the simulation of process conditions method.
249VS Sensor
May 2022
Simulation of Process Conditions for Calibration of Fisher Level
Controllers and Transmitters
Contact your Emerson sales office for information on obtaining the Supplement to 249 Sensor Instruction
Manuals—Simulation of Process Conditions for Calibration of Fisher Level Controllers and Transmitters
(D103066X012
), or visit our website at www.Fisher.com .
Parts Ordering
When corresponding with your Emerson sales office about this equipment, always refer to 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.
WARNING
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson should not, under any
circumstances, be used in any Fisher instrument. Use of components not supplied by Emerson may void your warranty,
might adversely affect the performance of the instrument, and could cause personal injury or property damage.
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249VS Sensor
May 2022
Instruction Manual
D103288X012
Parts Kits
Description Part Number
Sensor Part Kit
Kit contains keys 8, 10, 17 R249VSX0012
Parts List
Note
Contact your Emerson sales office
Key Description
Sensor Parts
1 Torque Tube Arm
CL125, CL150 FF, CL150 through1500 RF
CL600, 900, 1500, 2500, Butt Weld End
3 Driver Bearing
Use with displacer stem and
standard displacer for vertical mounting
Use without displacer stem with
displacers for vertical / horizontal mounting
4 Driver Bearing Bolt (2 req'd)
Use with displacer stem and
standard displacer for vertical mounting
Use without displacer stem with
displacers for vertical / horizontal mounting
for Part Ordering information.
Key Description
5 Travel Stop Post (4 req'd)
6 Travel Stop
7 Nut (4 req'd)
8* Cotter Spring
9* Displacer
3 inch x 10 inches (1600 psi)
(vertical or horizontal mounting)
3 inch x 10 inches (1600 psi) (NACE)
(vertical or horizontal mounting)
3 inch x 14 inches (1600 psi)
3 inch x 14 inches (1500 psi) (NACE)
2 inch x 32 inches (1500 psi)
2 inch x 32 inches (1500 psi) (NACE)
1.375 inch x 48 inches (1800 psi)
1.5 inch x 60 inches (1800 psi)
10* Torque Tube Assembly
Standard Wall
Thin Wall
11 Stud Bolt (4 req'd)
12 Retaining Flange
13 Hex Nut (4 req'd)
14 Rod & Driver, w/vertical displacer
Spud & Driver, w/vertical displacer or no displacer
Rod, w/vertical displacer
Rod & Driver
horizontal mounting
12
*Recommended spare parts
Instruction Manual
D103288X012
Figure 8. Fisher 249VS Sensor Construction; Flanged Connections
WITH DISPLACER
249VS Sensor
May 2022
GE18352-A
GE32002-A
Key Description
15 Nameplate
16 Drive Screw (4 req'd)
17* Tube End Gasket
WITHOUT DISPLACER
Key Description
18 Stem End Piece
use with displacer stem and
standard displacer for vertical mounting
Rod Connector
use without displacer stem with
standard displacers for vertical mounting
*Recommended spare parts
13
249VS Sensor
May 2022
Figure 9. Fisher 249VS Sensor Construction; Butt Weld End
WITH DISPLACER
Instruction Manual
D103288X012
GE29733-A
Key Description
19 Displacer Stem
20 Hex Nut (2 req'd)
use with displacer stem and
standard displacer for vertical mounting
WITHOUT DISPLACER
Key Description
21 Positioning Plate
22 Tag, NACE (not shown)
23 Seal Wire (not shown)
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Instruction Manual
D103288X012
249VS Sensor
May 2022
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249VS Sensor
May 2022
Instruction Manual
D103288X012
Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Fisher and FIELDVUE are marks owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson
Automation Solutions, Emerson, and the Emerson logo are trademarks and service marks 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. All sales are
governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such
products at any time without notice.
Emerson Automation Solutions
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Cernay, 68700 France
Dubai, United Arab Emirates
Singapore 128461 Singapore
www.Fisher.com
16
E 2007, 2022 Fisher Controls International LLC. All rights reserved.
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