PRESIDIUM Gem Indicator PGI Manual Del Usuario página 7

An "Error" message will appear if "SYS CHECK" fails
(Fig 1.4.3). The error can be due to the following reasons:
1. The tip is not connected properly.
2. A new tip has been inserted and its settings are
different as it has not been properly calibrated.
3. There are broken pin connections within the unit or
the tip has been damaged.
In such situations, it is recommended for you to remove,
re-insert and recalibrate the tip. If the error persists,
please contact Presidium.
Cleaning of gemstone prior to testing
Prepare a clean tissue or jewelry cloth. Carefully retrieve
the gemstone with tweezers and place the gemstone face
down on its table facet. (Fig 1.5a)
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Fig. 1.4.3
Fig. 1.5a
Gently rub the table of the gemstone against the tissue/
jewelry cloth (Fig. 1.5b).
If your stone is mounted in jewelry, please carefully clean
the stone (Fig 1.6).
Operating Conditions
The gemstone should be clean and dry before testing.
Elaborate cleaning procedures
necessary.
Recommended Normal Operating Conditions
The recommended testing temperature is between
23°C – 27°C or 73°F – 80°F. Please allow the gemstone
or jewelry piece to adjust to room temperature prior to
testing. Exposure and/or operating the tester outside the
recommended testing temperatures will affect the result
and performance of the tester.
Operating under Extreme Conditions
In the event that testing is done outside the recommended
operating conditions, the tester must first be calibrated
under the same temperature setting as the testing site.
Please refer to Section 5 of this handbook for calibration
procedure. This calibration is done to ensure the accuracy
and consistency of the testing results.
However please note that the temperature conditions
should be kept between 20°C to 33°C.
Fig. 1.5b
Fig. 1.6
are not normally
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