Sterling SVL-A, SVL-B, SVL-C, SVL-D installation instructions Note:

SVL-A, SVL-B, SVL-C, & SVL-D Self-Contained Material Loaders - Venturi Style 26 of 49
Programming:
Overview of the modes and their basic functions:
• Operating mode: Normal operating mode. In this mode all normal sensor functions are
active.
• Adjustment mode: Setting of the switching threshold by empty and full adjustment.
• Locking mode: Locking and unlocking of the unit possible to avoid tampering.
Empty adjustment
The unit must be adjusted after installation in the empty tank (empty adjustment). The tank can
be considered to be "empty" when the medium to be detected is a minimum of 20mm (0.9
inches) away from the active zone. If the sensor detects a medium after adjustment, its
switching status changes.
Note: The sensor is operational just with empty adjustment. However, it is
recommended to carry out a "full adjustment" with the active zone being
completely covered after empty adjustment. On the basis of the values for the
empty state/full state the internal microprocessor determines the optimum position
of the switching thresholds between the two states. Using both adjustment criteria
(empty and full adjustment) results in the maximum operational reliability for the
application. For empty adjustment the internal microprocessor generates 2 values.
The first value corresponds to the sensor signal measured in the empty state. The second value
is an assumed measured value for the full state. It is calculated from the just measured empty
state and a factory signal preset. For full adjustment this second value is replaced by a real
measured value.