Regan Scientific Instruments BOT-3000E, Руководство по эксплуатации

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Figure 6
4. Adjust the test run distance to 8 inches (20 cm), run two
DCOF tests in opposing directions, then average both results.
Compare the averaged result to the reference surface label
target value. If the value falls within the stated tolerance band,
the sensor is conditioned and ready to perform testing.
5. If the resulting averaged value falls outside the stated
tolerance band, the reference surface may require additional
cleaning, or the sensor may require further reconditioning with
new sandpaper. The reference surface should be polished
periodically with 12 micron lapping film to remove invisible
contamination buildup.
6. As an optional feature, a sensor may be programmed to
incorporate a limited positive or negative offset value to
compensate for minute differences in the sensor material,
determined by a known reference surface value. The default
setting for this feature is disabled.
NOTE: If an offset value is
used, the value will be included in the test result data printout.