4. Measuring environment and safety
information
Conventional testing devices at the moment only dispose of
the possibility to determine the testing object's conductivity in
layers near the surface. Core areas made of tungsten or
tantalum that are plated with thick galvanicly deposited
precious metal layers can't therefore be distinguished
reliably.
Unlike the GoldScreenCard: the patented inductive testing
process uses the lowfrequency electromagnetic alternating
fields. The measurement frequency is chosen in a way that
guarantees a complete pervasion of all coin types by the
testing field. The whole sensor system and evaluation
technology is inside the compact casing. Using a USB
interface cable, the signals can be compared to the saved
reference data and interpreted with the included evaluation
software "GoldScreen Software".
Because of the high penetration depth, there will be different
measuring results despite of the same conductivity of the
coins' metal, e.g. for 1 ounce coins and their corresponding
1/2 ounce variants. For this reason, the evaluation software
distinguishes between these coin sizes.
Inside the GoldScreenCard, there is a sensitive evaluation
technology to perform the measurement. In order to perform
an ideal measurement, please keep the following in mind:
1. ) Only use the included microUSB adaptor cable. Low
quality products can cause false measurements or the
destruction of the GoldScreenCard.
2. ) Make sure that the GoldScreencard isn't put on a
metallic surface when measuring and calibrating and don't
put metallix objects near the GoldScreenCard because this
can cause measurement inaccuracies.
Instructions Goldscreencard | 5
