Quick Start Guide
D103470X012
DLC3020f Digital Level Controller
April 2022
4
Protecting the Coupling and Flexures
NOTICE
Damage to flexures and other parts can cause measurement errors. Observe the following steps before moving the sensor
and controller.
Lever Lock
The lever lock is built in to the coupling access door. When the door is open, it positions the lever in the neutral travel
position for coupling. In some cases, this function is used to protect the lever assembly from violent motion during
shipment.
A DLC3020f digital level controller will have one of the following mechanical configurations when received:
1. A fully assembled and coupled caged‐displacer system shipped with the displacer or driver rod blocked within the
operating range by mechanical means. In this case, the access handle (figure 2) will be in the unlocked position.
Remove the displacer blocking hardware before calibration (see the appropriate sensor instruction manual). The
coupling should be intact.
NOTE:
1 SET SCREW IS USED TO LOCK THE LEVER IN PLACE FOR OPERATION
PRESS HERE TO
MOVE ACCESS HANDLE
SLIDE ACCESS HANDLE TOWARD FRONT OF
UNIT TO EXPOSE ACCESS HOLE
ACCESS HOLE
MOUNTING STUDS
SHAFT CLAMP
SET SCREW
1
Figure 2. Sensor Connection Compartment (Adapter Ring Removed for Clarity)
NOTICE
When shipping an instrument mounted on a sensor, if the lever assembly is coupled to the linkage, and the linkage is
constrained by the displacer blocks, use of the lever lock may result in damage to bellows joints or flexure.
