32
TROUBLESHOOTING
ERROR MESSAGES
Over Range
If the message OVERRANGE is displayed when scanning a sample, the sample
may be over range or under range. If the sample is over range, the sample
should be diluted and tested again (see Sample Dilution Techniques and
Volumetric Measurements, page 26).
If overrange is displayed, scroll to
Calibrate
and press
ENTER
to view
the result. The concentration is only
an
approximation
. Press
EXIT
and
continue testing.
Note: If
EXIT
is not pressed the
meter will calibrate on the over
range result.
Note: Over range results will also be
displayed in the test log.
096 Urea
Overrange
<Enter> continue
Scan Blank
Scan Sample
12:00:00 001/500
CALIBRATION
As with all pre-calibrated meters, it is highly recommended, even if not required
by regulations, that the user periodically verify the performance of the meter
by running standards with a predetermined concentration. Results outside of
specification are an indication that the meter needs to be adjusted. This can be
done following the user calibration described on page 10. If the user calibration
fails to properly adjust the meter then the meter should be returned to LaMotte
Company for recalibration. (See page 21).
STRAY LIGHT
The colorimeter should have no problems with stray light. Make sure that the
sample compartment lid is always fully closed.
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