PRESIDIUM OTI All in One Diamond Tester User Guide

PRESIDIUM OTI All in One Diamond Tester

IMPORTANT INFORMATION

• OTi is intended to be used on polished colorless gemstones that are proportionately cut with a minimum table width of 1.6mm x 1.6mm from Color Grade of D to J only.

• Our tip is constructed with fibre optic glass and should be handled carefully.

• For gemstones that have non-ideal cut proportions, inaccuracies may arise due to light leakage. Refer to diagram below.
  

• For smaller gemstones or gemstones in an enclosed setting, user should allow gemstone to cool down for 3-5 seconds before retesting.

• OTi comes with a replacement tip function.

GETTING STARTED

Powering up your OTi

• Rechargeable Lithium batteries or Power Bank via the provided USB cable is recommended for prolonged usage with portability.
• If electrical power is preferred, ensure that only Presidium universal USB adaptor is used. Kindly note that the adaptor is not meant for charging of batteries.

Turning on your OTi

• Press the power button to turn ON the tester.
  Extend the tip outwards by sliding the knob down.

• Press power button to return to previous page.

INITIALIZE DETECTOR

• Initializing detector will occur one time only upon turning on.

• Press the Test icon and tip will heat up.
  To initialize detector, depress tip against round disk on the stone rest.

• In the event Initialize Detector is unsuccessful, it is possible the tip is defective. User is advised to calibrate and if it does not rectify the problem, a tip replacement is required.

• To check on the functionality of UV LED, gently depress the tip onto a piece of paper.
  Should you notice a UV LED blue light, this confirms the UV LED is operational. Absence of light indicates a faulty UV LED and need for tip replacement.

• Upon completion, tip will reheat until “Depress tip to start test” appears. Do not perform any test till heating is completed.

Cleaning the Probe Tip

• Gently rub the tip in a circular motion against a piece of paper
• Hold the probe pen with the pen tip forming a right-angle (90-degree) with alcohol wipe.

Cleaning your gemstone prior to testing

• The gemstone should be clean and dry before testing.

PERFORMING A TEST

• For testing of loose gemstones, ensure the gemstone is placed securely on the metal stone rest.
• During the test, the tip must be placed at a right angle or perpendicular to the table of the gemstone for an accurate reading.
• Depress tip on the table of gemstone.
• Results will be shown after each test.
• To start next test, wait for the heating icon to complete or until “Depress tip to start test” appears.

READING TEST RESULTS

The test results are indicated as follows:

Single Beep
CVD/HPHT/ Type IIa| The tested gemstone has the characteristic light transmittance ability of a Type IIa diamond, suggesting that this could be a CVD/HPHT/Type IIa Diamond| Single Long Beep
Moissanite| The tested gemstone has the characteristic light transmittance ability of a Moissanite, suggesting that this could be a Moissanite| Double Beep
Simulant| The tested gemstone has the characteristic low thermal conductivity compared to diamonds and Moissanite, suggesting that this could be a simulant| No Beep

SHUTTING DOWN

• Press and hold the power button to initiate shutting down sequence. Retract probe tip from the tester when not in use.

OTHER FUNCTIONS

• Press the gear icon on the main page, to enter the settings function.
  

Calibration

• Depress tip against round disk on the stone rest and follow the instructions to complete the calibration.

CUSTOMER SUPPORT

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Quick Guide
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References

• Presidium Instruments | Quality, Precision & Reliability

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