10
Calibration
All testers have been calibrated during the manufacturing
process and no further adjustment or user intervention to
the tester is required.
Self-calibration should not be attempted. To minimize
any risks associated, users should contact Presidium at
[email protected] or its service center for
assistance. In the event that users require the manufacturer
to re-calibrate the unit, the users will bear the associated
to/fro freight cost for the shipping of unit to the service
center.
Recommended testing conditions
The gemstone should be clean and dry before testing.
However, elaborate cleaning procedures are not normally
necessary
(Fig. 1.6).
Fig. 1.6
The recommended testing temperature is 18°C – 27°C
or 65°F- 80°F Please allow the gemstone or jewelry
piece to adjust to room temperature prior to testing.
Exposure and/or operation of the tester outside the room
temperature would affect the results and performance of
the tester.
Battery information
Do not leave worn out batteries in the battery compartment
as the batteries may corrode, leak or damage the tester.
Batteries should be removed when the tester is expected
to be stored for an extended period of time.
To prevent inaccurate readings, replace with new battery
Summary of Contents for Multi-Tester III
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