2.3 Preparing for Installation
2.3.1 Installation precautions
Any questions with respect to the installation should be
addressed prior to beginning the installation. Failure
to install the
Sentinel LCT8
correctly can increase
measurement uncertainty.
All the mechanical and electronic components are shipped
fully assembled, however the following precautions should
be observed:
• Only authorized personnel should perform the installation.
The proper personal protection equipment (PPE) should
always be used when working with this equipment.
• The vessel shall be installed in such a way that it can be
safely operated, maintained and inspected. Please refer
to specific outline and installation drawings for proper
clearances and specific distances for each system size.
In general, allow for a minimum of 12” of space on all
sides of pressure vessel and transmitter, with an ideal
clearance of 24” on all sides.
• You must provide suitable over-pressure protection
at or in the main piping to the flowcell in order to
prevent damage to the flowcell and injury to personnel.
The utilized over-pressure protection device shall be
supplied with all declarations of conformity and
EC-type design certificates.
• Make sure the difference between the inside diameter
of the pipe and that of the
Sentinel LCT8
meter does
not exceed 0.5%, as changes in internal diameters
will cause flow profile disturbances.
• Make sure any non-symmetrical offset does not
exceed 1%, as misalignment between the piping and
the meter may cause flow profile disturbances.
• Make sure the gasket is centered on the flange faces
and does not protrude into the pipe, as protrusion of the
gasket into the pipe may cause flow profile disturbances.
• Make sure the
Sentinel LCT8
is oriented with the flow
transmitter in a vertical position at the top, as shown in
Figure 7
below.
Figure 7: Lifting strap locations
2.3.2 Lifting Instructions
WARNING!
To avoid possible strain, refer to the
Sentinel
LCT8
label for the assembly weight, use a
properly-rated lifting assembly, and place
the lifting straps in the indicated locations
Never stand
below any object being lifted!
Use proper lifting techniques when moving the
Sentinel LCT8
(see
Figure 8
below). No lifting hooks or eyelets are provided.
The recommended method for lifting the
Sentinel LCT8
is by
using lifting straps on each side of the pressure vessel with a
stabilizer bar between them, located above the transmitter
enclosure. Additional care may need to be taken to prevent
the transmitter from rotating, especially on smaller systems
where the transmitter weight is a larger percentage of the
total system weight.
Stabilizer bar
Figure 8: Proper lifting method
WARNING!
Do not use the transmitter to support the
weight of the flowcell, as shown in
Figure 9
below. The transmitter cannot support the
weight of the pressure vessel.
Figure 9: Improper lifting method
66
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