LaMotte SMART 3 Electronic Soil Lab - Manual (Page 49)

SMART3 Soil 1.11 49
reuse, and recycling systems contact local or regional waste administration or
recycling services.
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 12).
If overrange is displayed, press
ENTER to continue testing on
diluted samples.
NOTE: After pressing
ENTER , the
overrange concentration will be
displayed. This concentration is
an approximation only.
002 Aluminum
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 24. If the user calibration
fails to properly adjust the meter then the meter should be returned to LaMotte
Company for recalibration. (See page 48).
STRAY LIGHT
The SMART3 Colorimeter should have no problems with stray light. Make sure
that the sample compartment lid is always fully closed, except when testing
COD with the adapter.