CALIBRATION INSTRUCTIONS
PLEASE READ THE ENTIRE CALIBRATION PROCEDURE BEFORE CALIBRATING
A. Fail Safe Selection
The fail safe feature provides a “false alarm” in case of power outage or major component failures. When
properly selected, the fail safe feature can protect equipment or alert you of a unit failure.
Fail Safe High (FSH) means that the relay is energized when NO PRODUCT is touching the probe. When
product comes into contact with the probe, the relay is de-energized.
Fail Safe Low (FSL) means that the relay is energized when PRODUCT IS touching the probe.
Fail Safe High or Fail Safe Low is selected by plugging the jumper next to the transformer in the appropriate
position.
NOTE:
Due to the wide variety of applications and possible control or alarm functions, the proper
fail safe selection will depend on your circumstances. Please call your distributor or the factory if
you need assistance.
B. Sensitivity Calibration
The LS2000 should be calibrated when no material is touching the probe and when the unit is installed where it
will be used.
1) Observe the red LED. If it is on, go to step 3.
2) If the red LED is off, turn the sensitivity adjustment potentiometer clockwise (CW) until it comes on.
3) Turn the sensitivity adjustment pot counter-clockwise (CCW) until the red LED just goes out. This sets the
unit to its maximum sensitivity. If in your application this is too sensitive, you can turn the sensitivity
adjustment pot further CCW; usually ¼ to ½ turn is sufficient to reduce the units sensitivity. Always bring
the product into contact with the probe after calibration to assure proper performance.
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