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Goldanalytix GoldScreenBox Instruction Manual

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Instruction Manual

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Summary of Contents for Goldanalytix GoldScreenBox

  • Page 1 CREEN Instruction Manual...
  • Page 2 November 2020, Rev 3, 05/21 © 2020 MARAWE GmbH & Co. KG, All rights reserved. Printed in the EU. All product names in this manual are trademarks of the respective holders.

  • Page 3: Table Of Contents

    7. Starting the Device and Performing a Measurement ..............5 8. Evaluation and Interpretation of the Results ................9 9. Important Hints for Measuring with the GoldScreenBox ............12 10. Special case small coins and bars ....................15 11. A1. Overview of the conductance for typical alloys in investment objects ....... 21 12.

  • Page 4: About Goldanalytix / Contact

    Germany. In our team we are working on the development of safe and reliable testing methods for each kind of precious metal. The GoldScreenBox has been developed and is manufactured completely in Regensburg/Germany. Thanks to the close synergy of analytics know-how and device development, we are always up to date.

  • Page 5: Scope Of Supply

    The frequency of the GoldScreenBox was adjusted in a manner, that chemically or galvanically plated metal layers of falsifications are totally pervaded. The penetration depth depends on the conductance of the testing sample and ranges from approximately 250 µm (pure...

  • Page 6: Safety Instructions For Optimal Measurement Conditions

    Inferior products can cause incorrect measurements or damage the internal electronic components of the GoldScreenBox.  Do not use the testing device in the presence of explosive gases, vapours or dust, or in wet environment.

  • Page 7: Operation And Display Elements

    6. Operation and Display Elements ④ ⑤ ⑥ ② ③ ⑦ ① Description ① LCD Colour Screen ② Sensor Field (Ø 20 mm) Control knob to control and select the desired metal / ③ alloy in the menu ② ④ Connector for charger ⑤...
  • Page 8 You can choose a language with the control knob. After selecting you will automatically be brought back to the menu. On demand, we also can provide the GoldScreenBox with other language packages. If you would like to verify an object please choose “Metal selection”...
  • Page 9 For a fake coin (e.g. made of a tungsten alloy) the result might look like the picture on the left. Your GoldScreenBox gets calibrated precisely before shipping. This means the GSB does not need to be calibrated by the user prior to the first measurement.
  • Page 10 For calibration please use the copper calibration piece, that you got together with your GoldScreenBox [more precisely: Cu-DHP; it contains a small amount of phosphorus (0.015-0.040%) leading to a conductance of only ca. 46-50 MS/m instead of approx. 58 MS/m for pure copper]. Place the calibration piece on the sensor field and confirm “Calibration”.

  • Page 11: Evaluation And Interpretation Of The Results

    PLEASE NOTE: This step is not a guarantee that your object is not a fake. The GoldScreenBox is a penetrating eddy current measuring device and no independent fake detector, because it is possible to develop and produce an alloy with e.g. the same electric conductivity as gold (e.g.
  • Page 12 Step 3: Detection of lower alloys and counterfeits made of e.g. molybdenum, tantalum or tungsten, tungsten alloys, tungsten carbide, brass, copper and so on up to a penetration depth of about 250 µm (in case of silver) up to 650 µm (in case of Krügerrand) with our GoldScreenBox (pure gold: ca. 350 µm).
  • Page 13 GREEN RANGE In the case of being in this range (i.e. the black measuring bar is in front of the green background and the "VAL" is green), you know that up to the corresponding penetration depth, the material is in the target range of a genuine precious metal. This normally excludes foreign metal cores (as long as they do not have the same conductivity).

  • Page 14: Important Hints For Measuring With The Goldscreenbox

    XRF-analysis. This means that Vreneli coins from 1922 sometimes were minted inaccurately and that not all components were controlled properly. Through its highly accurate measuring system the GoldScreenBox recognizes those impurities, which leads to lower conductivity values for the measured coins (iron lowers the conductance).
  • Page 15 Then the GoldScreenBox will not give you a reliable answer. "Smaller" objects are normally penetrated completely by the magnetic induction field - in case of bigger ones (from 50 to 100 g, according to their geometry), forgers would have to use very little amounts of fake material in order to not get caught.
  • Page 16 We do not assume any responsibility for any financial losses that result from the use of the GoldScreenBox. An absolute security can only be provided by a total chemical analysis. The GSB can "only" show you if the conductivity of the measured material in the set value at room temperature.

  • Page 17: Special Case Small Coins And Bars

    16 mm 1.2 mm When we place the 1-ounce coin on the 20 mm wide measuring circle of the Goldscreenbox, we obtain almost the standard reference conductance of pure gold at 20 °C [45.0 MS/m]. This is logical, as the 37 mm wide coin covers the measuring circle completely. How does the 16 mm wide...
  • Page 18 1.) 1/10 Au 999 Our measurements with various 1/10 ounce coins have shown, for example, that the target value for 1/10 ounce pure gold is around 41 MS/m. This means that if the coins have a diameter of 16 to approx.
  • Page 19 In the following table you can see the dimensions and the measured values obtained by us of the most common 1/10 ounce coins. Fineness Conductance Measuring Name Diameter Thickness Weight [‰] [MS/m] mode Lunar II (from 2008) 17.1 mm 1 mm 3.11 g 43.5 Au 999...
  • Page 20 - it can be assumed with a high degree of certainty that .900 coins of similar dimensions and weights should also show corresponding behaviour on the GoldScreenBox. Fineness...
  • Page 21 thickness of the rectangular shaped bodies. But also for most and especially the most common, most traded bars, groupings can be found. Therefore, please pay attention to the minimum requirements regarding length and width which we set for the respective ingot size (to be found in the respective measuring screen as well as in this manual).
  • Page 22 example of the Umicore bar (marked orange) shows that bars that are significantly larger than the normal 2.5 g bars can be measured in the regular Au999 mode. In the following table you can see the values of the most commonly traded bars of this size: Fineness Length Width...

  • Page 23: A1. Overview Of The Conductance For Typical Alloys In Investment Objects

    A1. Overview of the conductance for typical alloys in investment objects Precious Metal Selection Page 1: Conductance Fineness Density Designation Type [MS/m] [‰] [g/cm Gold 999 45.0 999,9 19.3 Gold 986 26.5 19.0 Gold 916 (A) 17.5 Gold 916 (B) 11.1 17.8 Gold 916 (C)
  • Page 24 Metal selection page 2: Conductance Fineness Density Designation Type [MS/m] [‰] [g/cm 1/10 Gold 999 41.0 999.9 19.3 1/10 Gold 916 (A) 17.5 1/10 Gold 916 (B) 10.9 17.8 5 g Goldbars 999 40.8 999.9 19.3 2 g/2,5 g Goldbars 999 31.5 999.9 19.3...

  • Page 25: A2. Overview Of Conductance Of More Precious Metal Alloys And Metals

    A2. Overview of Conductance of more Precious Metal Alloys and Metals Conductance Conductance Embossing Foreign Metal [MS/m] [MS/m] Alloys of yellow gold Copper (pure form) 58.0 .999 45.0 Copper alloys 41-57 .916 16.3 Aluminum (pure form) 36.5 .750 Brass 13-33 .585 Magnesium .333...

  • Page 26: More Non-Destructive Gold-Testing Devices By Goldanalytix

    DensityScreenScale The Goldanalytix Density Balance is a great device for testing precious metals of different sizes for their authenticity. Most fake coins, barss or jewellery can be detected by using the Density Balance because of different densities of the objects.
  • Page 27 Notes:...
  • Page 28 Goldanalytix – a registered trademark of MARAWE GmbH & Co. KG Donaustaufer Str. 378, Building 64 93055 Regensburg Amtsgericht – Registergericht – Regensburg HRA 9148, Seat: Regensburg Personally liable partner: MARAWE Verwaltungs GmbH, Seat: Regensburg Amtsgericht Regensburg HRB 14591 Managers: Dr. Jonas Mark, Dr. Peter Raster, Dr. Stefan Weiß...

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