Testers(PDMT, PMUT, PGT, PDT & PRIM)
Why doesn’t my tester work when powered with an AC adaptor?Only use the AC adaptor supplied by Presidium, otherwise the polarity of the plug might not be suitable. Remove the AC adaptor from the inlet and try operating it with batteries. If the tester is operating normally using batteries, the AC adaptor is not working. If the tester is not working when using batteries, the tester is faulty. In the event that the tester is not working when using batteries, please send the unit to the authorized dealer nearest to you for repair.
Why does moissanite register as diamond when using my PMuT with a metal tray?a) Forming incomplete test loop
PMuT provides results by using both the electrical and thermal conductivity property of gemstones. Moissanite is conductive while diamond is not. Hence, it is important to place the stone on a metal tray and to hold the metal tray with one hand and the tester with another to form a complete electrical loop. Otherwise, moissanite will not be conductive and PMuT will register diamond.
b) Property of moissanite The uneven distribution of impurities in moissanite could also cause the above observation. Hence, try to take a few tests at the girdle and different locations on the table for better results.
Why can’t the reflectivity reset to zero on my PRM/PDT?Ensure that the protective cover is replaced by the cylinder before pressing the Display button. When the protective cover touches the aperture of the light ray and sensor, some light will be reflected and the 7-segment LED will display a reading.
Scales (PCS-50LFT, PCS-100)
Gauges(PDG, PEGG & PGCG)
Engraving Machines(PIREM, PJEM)
Why does my ring move during engraving?The ring is not securely fastened. For regularly-shaped rings, take note of the width of the ring and use the appropriate self-centering jaw. Use the red self-centering jaw for narrower rings and the blue one for wider rings. Ensure that the ring is securely fastened by using the chucking knob.
Why are my engraved letters distorted?The letters are distorted due to excessive pressure exerted on the level. Do not push the level all the way down, as the engraving diamond will sink too deeply into the metal surface during engraving.
As a rule of thumb, push the level down lightly until it reaches a point where the level comes to a stop. At this point, the engraving diamond is at the surface of the ring. Exert slightly more pressure and start engraving. Practice makes perfect!
For further product support, please contact us.
