1. Manuals
  2. Brands
  3. Fisher Manuals
  4. Accessories
  5. 249W
  6. Instruction manual

Fisher 249W Instruction Manual

Cageless wafer style displacer sensor
Hide thumbs Also See for 249W:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Instruction Manual
Instruction Manual
D102803X012
Fisher
249W Cageless Wafer Style Displacer
™
Sensor
Contents
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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.
www.Fisher.com
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .
. . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
. . . . . .
. . . . . . . . . . .
Figure 1. Fisher 249W Sensor with FIELDVUE™
DLC3010/DLC3020f Digital Level Controller
1
1
2
3
3
4
5
5
9
11
12
13
13
14
16
16
17
17
17
19
249W Sensor
July 2018

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 249W and is the answer not in the manual?

Questions and answers

Related Manuals for Fisher 249W

Summary of Contents for Fisher 249W

  • Page 1: Table Of Contents

    ........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.

  • Page 2: Description

    July 2018 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.

  • Page 3: Type Number Description

    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 249W level sensors, as well as a variety of other products, contact: Emerson Automation Solutions...

  • Page 4: Installation

    The 249W sensor can be installed directly on the vessel as shown in figure 4. It also can be installed in a user fabricated cage mounted on the side of the vessel as shown in figure 5. The sensor mounts on the top of the vessel or in the displacer cage using an NPS 3 raised face flange with the NPS 3 249W wafer body, or an NPS 4 raised‐face flange with...

  • Page 5: Installation On Top Of Vessel

    Figure 5 shows the 249W sensor mounted on the side of a vessel using a displacer cage. Figure 6 provides the 249W dimensions required to fabricate a cage. Figure 7 provides overall envelope dimensions for a 249W sensor and DLC3010/DLC3020f controller, and figure 8 provides overall envelope dimensions for a 249W and 2500 controller or transmitter.
  • Page 6 Instruction Manual 249W Sensor July 2018 D102803X012 Figure 6. Typical Cage Connections STYLE 2 CAGE WITH TOP AND LOWER SIDE VESSEL CONNECTIONS STYLE 1 GE06686 CAGE WITH TOP AND BOTTOM VESSEL CONNECTIONS GE06685 NPS 3 OR 4 CL150, CL300, OR...
  • Page 7 Instruction Manual 249W Sensor D102803X012 July 2018 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 MATCHES NPS 3 RAISED‐FACE FLANGE RAISED‐FACE FLANGE (5.00)
  • Page 8 Instruction Manual 249W Sensor July 2018 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 MATCHES NPS 3 RAISED‐FACE FLANGE RAISED‐FACE FLANGE (3.88) (3.88) (5.00) (5.00)

  • Page 9: Mounting The Sensor On The Process Vessel Or Displacer Cage

    Instruction Manual 249W Sensor D102803X012 July 2018 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.
  • Page 10 Instruction Manual 249W Sensor July 2018 D102803X012 Figure 9. Displacer and Displacer Rod Connections Figure 10. Positioning Fisher 249W Wafer Body on the Connecting Flange DISPLACER COTTER SPRING STEM END PIECE DISPLACER ROD DISPLACER STEM EXTENSION LOCKING NUTS DISPLACER SPUD...

  • Page 11: Maintenance

    D Relieve any process pressure in the process vessel where the 249W 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 249W sensor and vent any pneumatic supply pressure.

  • Page 12: Removing The Displacer And Stem

    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 the 249W assembly as shown in figure 14. Refer to figure 14 for key number locations. Removing the Displacer and Stem WARNING Refer to the Maintenance WARNING at the beginning of this section.

  • Page 13: Replacing The Displacer, Cotter Spring, Stem End Piece, And Displacer Spud

    Instruction Manual 249W Sensor D102803X012 July 2018 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: Replacing The Torque Tube

    Instruction Manual 249W Sensor July 2018 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.
  • Page 15 Instruction Manual 249W Sensor D102803X012 July 2018 Figure 13. Torque Tube and Displacer Rod Assemblies DISPLACER ROD ASSEMBLY ROTARY SHAFT GASKET TORQUE TUBE OUTER TUBE END POSITIONING PLATE DRIVER BEARING W0145‐2 EXPLODED VIEW OF TORQUE TUBE AND DISPLACER ROD ASSEMBLY W0654‐1...

  • Page 16: Changing The Mounting From Left-Hand To Right-Hand Or Vice Versa

    Simulation of Process Conditions for Calibration of Fisher Level Controllers and Transmitters Contact your Emerson sales office or Local Business 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).

  • Page 17: Related Documents

    Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Automation Solutions 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.
  • Page 18 Instruction Manual 249W Sensor July 2018 D102803X012 Figure 14. Fisher 249W Sensor Construction PARTS NOT SHOWN: 23 19B3127...

  • Page 19: Parts List

    Instruction Manual 249W Sensor D102803X012 July 2018 Parts List Description Cotter Spring (2 req'd) Displacer Stem  When ordering a replacement displacer stem, Note  specify length and desired material. Contact your Emerson sales office or Local Business Partner for Part Ordering information.

  • Page 20: D102803X012 July

    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.

Table of Contents