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Emerson Fisher 249VS, Instruction Manual

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Emerson Fisher 249VS Instruction Manual Download Page 14

Instruction Manual

D103288X012

249VS Sensor

July 2018

14

Figure 9. Fisher 249VS Sensor Construction; Butt Weld End

GE29733-A

WITH DISPLACER

WITHOUT DISPLACER

Key

Description

19

Displacer Stem

20

Hex Nut (2 req'd)
 use 

with

 displacer stem and

  standard displacer for vertical mounting

Key

Description

21

Positioning Plate

22

Tag, NACE (not shown)

23

Seal Wire (not shown)

Summary of Contents for Fisher 249VS

Page 1: ...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 maint...

Page 2: ...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 ...

Page 3: ... Stainless Steel N06600 N10276 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 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...

Page 4: ...S 4 RF FLANGE DISPLACER STILLWELL 1 NOTE 1 STILLWELL REQUIRED AROUND DISPLACER IF THE FLUID IS IN A STATE OF CONTINUOUS AGITATION W9356 1 Mounting the Sensor on the Process Vessel CAUTION 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 waf...

Page 5: ...ncy 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 t...

Page 6: ...ace it with a new one upon reassembly 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 s...

Page 7: ...rical 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 l...

Page 8: ...acer 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 di...

Page 9: ...earing 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 ...

Page 10: ... 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 a...

Page 11: ...mbly 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 Simulation of Process Conditions for Calibration of Fisher Level Controllers and ...

Page 12: ...displacer for vertical mounting Use without displacer stem with displacers for vertical horizontal mounting Key Description Part Number 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 ...

Page 13: ... WITH DISPLACER GE32002 A WITHOUT DISPLACER Key Description 15 Nameplate 16 Drive Screw 4 req d 17 Tube End Gasket 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 ...

Page 14: ...Sensor Construction Butt Weld End GE29733 A WITH DISPLACER WITHOUT DISPLACER Key Description 19 Displacer Stem 20 Hex Nut 2 req d use with displacer stem and standard displacer for vertical mounting Key Description 21 Positioning Plate 22 Tag NACE not shown 23 Seal Wire not shown ...

Page 15: ...Instruction Manual D103288X012 249VS Sensor July 2018 15 ...

Page 16: ...available upon request We reserve the right to modify or improve the designs or specifications of such products at any time without notice E 2007 2018 Fisher Controls International LLC All rights reserved 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 ...

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