Filtec FT-70c, Service And Technical Reference Manual

Page: 174 / 243

Chapter 6: Calibration Procedures
6-35
4. Slowly turn the High Voltage Output Adjustment. The STD
Calibration LEDs will rise until they peak and then begin to
fall. Stop precisely when the LEDs begin to fall.
5. The peak, the point immediately before the LEDs begin to fall,
is the proper calibration point. Turn the adjustor counter-
clockwise slowly until the LEDs return to the peak level again.
This is the proper setting.
Note
Continuing to turn the adjustor past the calibration point will
cause all LEDs to light. This is the high noise region of the STD
sensitivity range. This is not the correct setting and will create
malfunctions during fill level inspection.
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