1/2019
Installation, Operation, and
Maintenance Instructions
www.beaumontmanufacturing.com
Model LC10 Operation Cont.
Sensitivity & Span
The span of the Level Controller is the distance that the level changes
between when the Pilot opens and closes. To adjust the span loosen
the Thumb Screw located on the Fulcrum. Then slide the Fulcrum
along the Flapper Bar. Moving the Fulcrum toward the center of the
Case increases the sensitivity of the Displacer to changes in liquid
level thereby decreasing the span. Moving the Fulcrum away from the
center of the Case decreases the sensitivity and increases the span.
Increasing the span means that a dump valve actuated by the LC10
will stay open longer draining more of the liquid in the vessel before it
closes. Decreasing the span close the dump valve sooner draining
less fluid.
Figure 7
Figure 8
Figure 9
