PRESIDIUM Diamond Mate PDMT Series, User Handbook Manual

Page: 11 / 108

11
The tester will shut down automatically after 10 minutes
of inactivity.
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 service@presidium.com.sg 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).
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 room temperature
will 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, and
damage the tester. Batteries should be
removed when the tester is expected to be stored for an
extended period of time.
Fig. 1.6