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Fisher
™
249VS Cageless Displacer Sensor
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
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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
or Local Business Partner before
proceeding.
Description
The 249VS sensor is designed to measure liquid level, interface level, or density/specific gravity inside a process vessel.
Instruction Manual
D103288X012
249VS Sensor
July 2018
