Instruction Manual

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Fisherr 249W Cageless Wafer Style Displacer

Sensor

Contents

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

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

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

Type Number Description 3.....................

Educational Services 3.........................

Installation 4..................................

Installation on Top of Vessel 5...................

Installation with Displacer Cage

on Side of Vessel 5..........................

Mounting the Sensor on the Process

Vessel or Displacer Cage 9....................

Maintenance 11................................

Removing the Displacer and Stem 12.............

Replacing the Displacer, Cotter Spring,

Stem End Piece, and Displacer Spud 13.........

Replacing the Displacer Rod/Driver

Assembly 13...............................

Replacing the Torque Tube 14...................

Changing the Mounting from Left‐Hand to

Right‐Hand, or Vice Versa 16.................

Simulation of Process Conditions for Calibration

of Fisher Level Controllers and Transmitters 16......

Related Documents 17..........................

Parts Ordering 17...............................

Determining Displacer Stem Length 17...........

Parts List 18...................................

Figure 1. Fisher 249W Sensor with FIELDVUE™

DLC3010/DLC3020f Digital Level Controller

W8231

Introduction

Scope of Manual

This instruction manual includes maintenance, and parts ordering information for the 249W cageless wafer style

sensor.

Although the sensor is usually shipped with attached controller or transmitter, as shown in figure 1, 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.

Instruction Manual

D102803X012

249W Sensor

December 2012

Summary of content (20 pages)

PAGE 1
Instruction Manual 249W Sensor D102803X012 December 2012 Fisherr 249W Cageless Wafer Style Displacer Sensor Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Type Number Description . . . . . . . . . . . . . . . . . . . . . 3 Educational Services . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 2
Instruction Manual 249W Sensor December 2012 D102803X012 Do not install, operate, or maintain a 249W sensor and the attached controller or transmitter 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.
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Instruction Manual 249W Sensor D102803X012 December 2012 Figure 3.
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Instruction Manual 249W Sensor December 2012 D102803X012 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 to avoid personal injury. D Check with your process or safety engineer for any additional measures that must be taken to protect against process media.
PAGE 5
Instruction Manual 249W Sensor D102803X012 December 2012 Figure 5. Fisher 249W Sensor Cage‐Mounted on Side of Vessel W8267 CAGE WITH TOP AND BOTTOM CONNECTIONS W8268 CAGE WITH SIDE CONNECTIONS Installation on Top of Vessel Note If a stillwell is used, install it plumb so that the displacer does not touch the wall of the stillwell. If the displacer touches the wall, the unit will transmit an erroneous output signal.
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Instruction Manual 249W Sensor December 2012 D102803X012 Figure 6. Typical Cage Connections 1 G 1 G STYLE 2 CAGE WITH TOP AND LOWER SIDE VESSEL CONNECTIONS STYLE 1 CAGE WITH TOP AND BOTTOM VESSEL CONNECTIONS GE06685 GE06686 NPS 3 OR 4 CL150, CL300, OR CL600 FLANGE 1 1 G G 356 mm (14‐INCHES) STYLE 3 CAGE WITH UPPER AND LOWER SIDE VESSEL CONNECTIONS GE06687 STYLE 4 CAGE WITH UPPER SIDE AND BOTTOM VESSEL CONNECTIONS NOTES: GE06688 1 DIMENSION G IS CUSTOMER SPECIFIED 2.
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Instruction Manual 249W Sensor D102803X012 December 2012 Figure 7. Overall Envelope Dimensions for Fisher 249W / DLC3010 or DLC3020f for Mounting on Customer Supplied Cage LEFT HAND MOUNT RIGHT HAND MOUNT MATCHES NPS 3 RAISED‐FACE FLANGE MATCHES NPS 3 RAISED‐FACE FLANGE 127 (5.00) 204 (8.04) 127 (5.00) MATCHES NPS 4 RAISED‐FACE FLANGE 507 (19.75) MATCHES NPS 4 RAISED‐FACE FLANGE 204 (8.04) 507 (19.75) 157 (6.19) 59 (2.34) 139 (5.49) 157 (6.19) 73 (2.87) 73 (2.87) 59 (2.34) 66 (2.
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Instruction Manual 249W Sensor December 2012 D102803X012 Figure 8. Overall Envelope dimensions for Fisher 249W / 2500 for Mounting on Customer Supplied Cage LEFT-HAND MOUNT RIGHT-HAND MOUNT MATCHES NPS 3 RAISED‐FACE FLANGE MATCHES NPS 3 RAISED‐FACE FLANGE 98 (3.88) 98 (3.88) 127 (5.00) 127 (5.00) MATCHES NPS 4 RAISED‐FACE FLANGE MATCHES NPS 4 RAISED‐FACE FLANGE 417 (16.40) 157 (6.19) 417 (16.40) 157 (6.19) 203 (8.00) 203 (8.00) 318 (12.51) 328 (12.
PAGE 9
Instruction Manual D102803X012 249W Sensor December 2012 When fabricating the cage, maintain a minimum clearance of 1/4‐inch between the displacer and the cage wall. Dirty or viscous fluids may require a larger clearance. Provide sufficient cage length below the displacer to ensure that the displacer does not hit the bottom of the cage. The A dimension should be sufficient to permit adequate clearance for installation and to allow access to isolation valves, etc.
PAGE 10
Instruction Manual 249W Sensor December 2012 D102803X012 Figure 9. Displacer and Displacer Rod Connections DISPLACER STEM END PIECE Figure 10. Positioning Fisher 249W Wafer Body on the Connecting Flange COTTER SPRING DISPLACER ROD DISPLACER STEM EXTENSION LOCKING NUTS DISPLACER SPUD W8224 Note In the next step, if mounting the wafer body on a displacer cage and a flange adaptor is required, install the flange adaptor instead of the blind flange. 5. Refer to figure 11.
PAGE 11
Instruction Manual 249W Sensor D102803X012 December 2012 Table 2.
PAGE 12
249W Sensor December 2012 Instruction Manual D102803X012 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, hazardous, or corrosive.
PAGE 13
Instruction Manual D102803X012 249W Sensor December 2012 CAUTION When removing the sensor from a process vessel or displacer cage, the displacer may remain attached to the displacer rod and be lifted out with the wafer body (key 1) when the wafer body is removed. If separating the displacer and displacer rod before removing the wafer body, remove the cotter spring (key 10).
PAGE 14
249W Sensor Instruction Manual December 2012 D102803X012 CAUTION If the displacer is to be disconnected from the displacer rod/driver assembly before being removed from the process vessel or displacer cage, provide a suitable means of supporting the displacer to prevent it from dropping into the vessel or cage and being damaged. 1.
PAGE 15
Instruction Manual 249W Sensor D102803X012 December 2012 Figure 13. Torque Tube and Displacer Rod Assemblies DISPLACER ROD ASSEMBLY GASKET ROTARY SHAFT TORQUE TUBE OUTER TUBE END POSITIONING PLATE W0145‐2 W0654‐1 DRIVER BEARING EXPLODED VIEW OF TORQUE TUBE AND DISPLACER ROD ASSEMBLY REMOVAL OR INSTALLATION OF POSITIONING PLATE 1.
PAGE 16
249W Sensor Instruction Manual December 2012 D102803X012 against the gasket. With a thumb on the upper portion of the positioning plate and a screwdriver in the slots as shown in figure 13, 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 18), being sure to tighten all nuts evenly. 9.
PAGE 17
Instruction Manual D102803X012 249W Sensor December 2012 Related Documents This section lists other documents containing information related to the 249W level sensor. These documents include: D 2500‐249 Pneumatic Controllers and Transmitters (Bulletin 34.2:2500) D Fisher Level Controller and Transmitter Dimensions (Bulletin 34.2:249) D Fisher L3 Pneumatic Level Controller (Bulletin 34.
PAGE 18
Instruction Manual 249W Sensor December 2012 D102803X012 Figure 14. Fisher 249W Sensor Construction PARTS NOT SHOWN: 23 19B3127 Parts List Key Description 1 Wafer Body NPS 3 WCC steel CF8M (316 SST) NPS 4 LCC steel CF8M (316 SST) Torque Tube Arm WCC steel LCC CF8M (316 SST) Note Part numbers are shown for recommended spares only. For part numbers not shown, contact your Emerson Process Management sales office.
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Instruction Manual 249W Sensor D102803X012 Key Description 3* Torque Tube Assy(1) Std wall N05500 (std w/WCC steel) 316 SST (std w/CF8M) N06600 N10276 Thin wall N05500 (std w/WCC steel) 316 SST (std w/CF8M) N06600 N10276 Heavy wall N05500 (std w/WCC steel) 316 SST (std w/CF8M) N06600 N10276 4 December 2012 Part Number Key Description 4 Displacer(1) (cont'd) 1‐1/2 x 60 inches (106 cubic inches) 4.
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Instruction Manual 249W Sensor December 2012 Key Description 12* Arm Gasket Graphite/SST N04400/PTFE Tube End Gasket(1) Graphite/SST N04400/PTFE 13* 14 Retaining Flange For SA‐193 B7 and B7M bolting For SA‐193 B8M bolting 15 16 Positioning Plate, zn pl steel Groove Pin, plated steel 17 Stud Bolt(1) (4 req'd) For SA‐193 B7 bolting For SA‐193 B7M bolting For SA‐193 B8M bolting 18 Hex Nut(1) (4 req'd) For SA‐193 B7 bolting For SA‐193 B7M bolting For SA‐193 B8M bolting D102803X012 Pa