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L2 Controller
July 2015
Installation
WARNING
Always wear protective clothing, gloves, and eyewear when performing any installation operations to avoid personal
injury.
To avoid personal injury or property damage caused by the sudden release of process fluid, be certain the service
conditions do not exceed the sensor pressure limits. Use pressure‐limiting or pressure‐relieving devices to prevent service
conditions from exceeding these limits.
Personal injury or property damage may result from fire or explosion if natural gas is used as the supply medium and
appropriate preventive measures are not taken. Preventive measures may include, but are not limited to, one or more of
the following: Remote venting of the unit, re‐evaluating the hazardous area classification, ensuring adequate ventilation,
and the removal of any ignition sources. For information on remote venting of this controller, refer to page 6.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
If installing this into an existing application, also refer to the WARNING at the beginning of the Maintenance section of this
instruction manual.
CAUTION
If the L2 level controller is installed on a vessel that is to be shipped to a different location (e.g. skid mounted units), remove
the displacer and displacer rod extensions before shipment. Failure to do so could result in damage to the displacer rod due
to vibration and impact loading during shipment. After the vessel is installed at its final location, reassemble the displacer
and displacer rod extension.
1. Be sure there are no obstructions inside the tank that will interfere with displacer installation or operation.
2. Provide the appropriate connection in the tank wall to match the sensor connection. Locate the tank wall
connection such that the displacer will be at the desired control level.
Attaching a Vertical Displacer
Refer to figure 7 for part locations.
1. Thread jam nut (key 68) all the way onto the threaded portion of the universal joint assembly (key 69).
2. Thread the displacer (key 81) all the way onto the threaded portion of the universal joint assembly.
3. Tighten the jam nut (key 63) against the displacer (key 81).
Attaching a Horizontal Displacer
Refer to figure 7 for part locations.
1. Thread the displacer (key 81) all the way onto the displacer rod (key 64) or extension (key 82).
2. Tighten the jam nut (key 63) against the displacer (key 81).
4
Instruction Manual
D103032X012
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