8/19/03
910-198E
Model 8500
Page 2-3
Perform a Multi-Point Calibration:
•
At least once per month
•
If superior accuracy is desired
•
If the probe is replaced, dropped, or contacts strong
magnetic material
•
If the probe tip is worn from abrasive material
Note:
If the unit has just been turned on, or the probe just connected,
allow the gage to warm-up for at least five (5) minutes with
the probe connected before performing either a Ball Calibra-
tion or Multi-Point Calibration.
2.3
Ball Calibration
Ball Calibration matches each target ball being used to an internal
lookup table from the unit’s memory. Ball calibration also measures
the two extremes of the ball’s possible locations (Ball On and Ball Off)
and assigns these endpoints to the lookup table. If no table exists for
the ball, then the unit automatically creates a default table from which
subsequent measurements are displayed. The table is preserved in the
unit’s memory, even if powered off, until overwritten by a new
calibration or deliberately erased by a Measurement or Master Reset.
1.
With the probe sitting in the probe stand, press the [CAL] key.
The gage display instructions will read "Ball Off".
2.
Remove any target ball from proximity to the probe tip by lifting
the ball straight up, and press [CAL]. The display will read
“Wait” while the gage measures the field strength at the probe
tip, and will then change to “Ball On”.
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