1.3.3 Operational Considerations
The Modulevel transmitter should be located for easy
access for service, configuration, and monitoring. There
should be sufficient headroom to allow installation and
removal of the transmitter head and, in cases of tank top
configuration, the displacer. Special precautions should be
made to prevent exposure to corrosive atmosphere, exces-
sive vibration, shock, or physical damage.
The operating temperature range for the transmitter elec-
tronics is -40° to +160° F (-40° to +70° C). The operating
temperature range for the digital display is -4° to +160° F
(-20° to +70° C).
Operation of all buoyancy type level devices should be
done in such a way as to minimize the action of dynamic
forces on the float or displacer sensing element. Good prac-
tice for reducing the likelihood of damage to the control is
too equalize pressure across the device very slowly.
1.4
Mounting
The Modulevel transmitter can be mounted to a tank using a
variety of configurations and process connections. Generally,
either a threaded, welded or flanged connection is used with
an external cage. A flanged connection is always used on a
tank top model. For information about the sizes and types of
connections available, see
Model Numbers, Section 4.9
.
Ensure all mounting connections are in place on the tank
and properly sized for the specific unit being installed.
Compare the model on the nameplate with the product
information to ensure the Modulevel transmitter is correct
for the intended installation.
1.4.1 Installing a Tank Top Mounted Modulevel (E61, E62,
E51 and E52 models)
Figure 1 illustrates a typical tank top installation.
Before installing, ensure that:
•
There is adequate headroom for the installation of the
Modulevel head and displacer and that it has unobstructed
entry into the vessel.
•
Using a level, the mounting flange is horizontal within 3°.
•
If the adjustable hanger assembly (P/N 32-3110-001) is
used, it is cut to the required length and attached to the
displacer stem.
Liquid
Level
Displacer
Figure 1
Tank Top Mounted
Installation
3
48-618 ES/EZ Modulevel Displacer Level Transmitter (Top Hat Assembly Design)
