10
48-635 E3 Modulevel
®
Displacer Level Transmitter
• A stilling well is installed for applications where continuous
agitation is present. The stilling well must be vertically level
so as not to restrict displacer movement.
See Figure 6 for a typical stilling well installation.
• The process temperature, pressure and specific gravity are
within the unit’s specifications for installation.
See
Specifications, Section 3.6
.
To install:
1. Position the head flange gasket on the vessel flange and gen-
tly lower the displacer into the vessel. To prevent damage to
the stem/spring assembly, avoid tipping the unit or, in any
way, putting lateral forces on the stem.
2. Align the flanges and ensure that the gasket is seated properly.
3. Install the flange bolts and nuts and tighten alternating nuts
in a star pattern. Flange bolting torque specifications are
listed on page 9.
Caution:
All MODULEVEL units are shipped from the factory with the
enclosing tube tightened and the transmitter head set
screws locked to the enclosing tube. Failure to loosen the
set screws prior to repositioning the supply and output con-
nections may cause the enclosing tube to loosen, resulting
in the possible leakage of the process liquid or vapor.
4. Loosen the transmitter head lock screws (socket type) and
position conduit outlet in the desired direction.
See Figure 7.
5. Retighten lock screws.
NOTE: Since the transmitter head is rotatable through 360º, it is impor-
tant to make certain that the controller locking screws are tight
before making electrical connections.
2.4.2 External Chamber Installation (E3C, E3D, E3E & E3F)
The chamber type MODULEVEL is mounted on the side
of the vessel with either a side/side or side/bottom connection,
as furnished. Figure 8 on page 11 illustrates a typical chamber
type installation.
Before installing, ensure that:
• There is adequate room for installation of the MODULEVEL.
• Using a level, the vessel mounting connections are level
within 3° in all directions.
• The process temperature, pressure and specific gravity are
within the unit’s specifications for installation.
See
Specifications, Section 3.6
.
• If not already done, remove the shipping strap and wire
assembly holding the displacer in place in the chamber. This
assembly must be removed through the bottom chamber
connection or drain before start-up.
Size
Always unlock for
repositioning or removal
of head assembly
and always relock,
after final positioning
Figure 7
Transmitter Head
Lock Screws
Use stilling well in
case of turbluent
medium
Figure 6
Tank Top Mounted
with Stilling Well
