Goldanalytix BARSCREENSENSOR User manual

BARS
CREEN
THE U
LTRASOUND
Instruction manual
CREEN
S
ENSOR
LTRASOUND
SCANNER BY G
OLDANALYTIX
Instruction manual
ENSOR
OLDANALYTIX
Instruction manual

0
September 2020, Rev. 1, 09/20
© 2020 MARAWE GmbH & Co. KG, All rights reserved. Printed in the EU.
All brand names and product names in this manual are registered trademarks of the respective
manufacturer or enterprise.

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Table of contents
1. About Goldanalytix / Contact..................................................................................................... 2
2. Introduction ............................................................................................................................... 2
3. Scope of supply .......................................................................................................................... 3
4. Ultrasound scanning .................................................................................................................. 4
5. Scanning bars ............................................................................................................................. 5
6. Tips & Tricks ............................................................................................................................. 10
7. Environmental and Disposal Instructions ................................................................................ 11
8. More non-destructive Gold-Testing Devices by Goldanalytix ................................................. 12

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1. About Goldanalytix / Contact
Goldanalytix, established in 2010, nowadays is the leading provider of precious metal testing
methods in Germany. In our team we are working on the development of safe and reliable
testing methods for each kind of precious metal. Thanks to the close synergy of analytics
knowhow and device development, we are always up to date. Due to continuous improvements
we achieve and guarantee highest standards of quality.
Do you need support with product data, service assistance or customer service? Feel free to
contact us through one of the following channels:
Homepage: www.gold-analytix.com
E-Mail: gold-analyti[email protected]
Phone: [phone]
We are looking forward to your contact!
2. Introduction
Congratulations on your purchase of the Goldanalytix BarScreenSensor, the professional
scanning device for precious metal bars and coins.
Important! Please read this instruction manual thoroughly prior to the first use of the
BarScreenSensor. Please keep in mind that no testing method can detect every fake. We will not
assume any responsibility for false identifications. The most recent instruction manual can be
found on www.gold-analytix.com/BarScreenSensor by clicking on “information” in order to
always be up-to-date after your purchase.
The ultrasound test is used to examine the authenticity of bigger objects. An important
characteristic for exact examination is that opposite surfaces are arranged in a parallel order.
The value can differ because of strong hallmarks, flutings or scratches.
.

3. Scope of supply
Your Goldanalytix
BarScreenSensor
In the unlikely event that something is damaged or missing please contact Goldanalytix
immediately (for contact data see page 2)
BarScreenSensor
set
is delivered with the following elements
In the unlikely event that something is damaged or missing please contact Goldanalytix
immediately (for contact data see page 2)
.
Ultrasound measuring
device
Ultrasound gel
3x AA
Instruction manual
Small suitcase
3
is delivered with the following elements
:
In the unlikely event that something is damaged or missing please contact Goldanalytix
Ultrasound measuring
device
Ultrasound gel
3x AA
-batteries
Instruction manual
Small suitcase

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4. Ultrasound scanning
Fun
ctions of the ultrasound analysis device
The ultrasound measuring device is controlled by a
measurement of the thickness and sound speed of materials.
transmission circuit, a receive circuit, a high
operating surface.
For the connect
100 ml of coupling gel.
Specification
Measuring frequency
Measuring head (Radius)
Ultrasound speed range
Display
Minimum unit
Measuring range
Precision
Working temperature
Power supply
Exterior dimensions
ctions of the ultrasound analysis device
The ultrasound measuring device is controlled by a
microprocessor and allows quick and precise
measurement of the thickness and sound speed of materials.
This device consists of a
transmission circuit, a receive circuit, a high
-
frequency oscillator, a CPU, a screen and an
For the connect
ions between sample and measuring head, the set contains
Description
5 MHz
5 mm
1000-9999 m/s
4-digit visualization
0.1 mm
1.2-225.0 mm (steel)
+/- (1% D +0.1) mm, D
describes the measured
thickness, for thicknesses inferior to
20 mm
precision is of +/- 5%
0 to 40 °C
3x 1.5 V AA-batteries
70 x 145.5 x 28 mm
microprocessor and allows quick and precise
This device consists of a
frequency oscillator, a CPU, a screen and an
ions between sample and measuring head, the set contains
describes the measured
20 mm
, the

5
5. Scanning bars
In this chapter, we briefly explain the scanning of bars with the ultrasound measuring device.
The bar has been divided by the middle and provided with drill holes then filled with lead. This
method is used frequently to fake silver bars using lead-tin alloys.
Preparation of measurement: Calibrating the BarScreenSensor
The first step consists of the calibration of the measurement unit by using the included stainless
steel measurement plate. The calibration should be done at least after every replacement of the
measurement head and/or the batteries. Apply enough coupling gel on the measurement head
and/or the stainless steel plate and press the measurement head on the test block on the device.
Press CAL to get to the calibration mode. Wait until the display shows 4.0 mm, which indicates
that the calibration has finished. After that, the device will turn back to the selected speed and
the measurement can begin.
Measurement 1: Testing with already known sound speed
1.) Establishing the speed value
We have summarized some values of the most important (precious) metals for you in an
overview that you can find in “6. Tips and tricks“. If you know the material you want to test, you
can read the values in this overview.
After starting the device, please adapt the sound speed in the menu by pressing the VEL-button.
You can now use the arrow keys up and down to switch between the saved sound speeds. If the
sound speed is close to your desired value, push the VEL-button again. This allows fine
adjustment oft he sound speed. In this example, we have selected 4329 m/s for the brass bar.

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The next step is measuring the bar’s thickness at the spot you want to test by using calipers.
Over its complete length, our bar has a thickness of 20 mm. In case of bars of unusual forms, you
might have to measure the thickness of various spots.
Now you can carry out the actual ultrasound measurement. Apply enough ultrasound gel on the
spot you want to measure and lay the measurement head onto it. Now the device will give you
the object’s thickness. In our example, the value matches exactly with the previously established
thickness. This means that the selected sound speed of 4329 m/s for this object at this spot is
correct.

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After this, you should „scan“ the bar. To do so, you lay the measurement head on different
spots to exclude inclusions of foreign material. In case of a fake, the value of the thickness can
differ significantly.
Measurement 2: Examination of UNKNOWN sound speeds
There are several situations where the sound speed is not exactly known. Some bars are made
of alloys, others of uncommon materials. The sound speeds for those are not listed in our
overviews and the online data sources sometimes differ significantly from each other. In this
case, you have to choose the procedure that is explained as follows.
If you know that the material (for example on the exterior edge) is not pervaded by the normally
centrally situated foreign metal bars, you can establish the speed of sound here. The
measurement head is laid on spot in question with the ultrasound gel. In this case, it is
irrelevant, which speed of sound is selected.

8
The device now gives you a value for the object‘s thickness.
Of course, this value is incorrect because the previously selected sound speed is wrong. This is
why you now take off the measurement head from the bar and measure the objects thickness
with calipers. Use the arrow keys to adjust the thickness for the BarScreenSensor in a way that it
matches with the actual thickness.

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As a last step, you press the VEL-button once again. The device then calculates the correct speed
of sound. Having done this, you can scan the rest of the bar like you did in measurement 1.
Saving the data
The established value can now be saved on the device’s memory. In order to do so, push STORE
for 2 seconds to get to the save mode. Push the up / down buttons to select the save file. In
order to look at the saved data, push STORE for 2 seconds when in normal mode and you will
obtain the saved data. Push STORE to exit the save mode.

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6. Tips & Tricks
Surface quality
Surfaces which are too rough will cause measurement errors. Please only use smooth and plane
surfaces for the investigation. In case of bars, please do not adapt the measuring head on the
hallmark but on the smooth area of the bar.
Non-parallel surface
The contact area should be parallel to the opposite side in order to avoid wrong measured
values.
Temperature
Please be aware of a constant environmental temperature as well as the temperature of the
testing object.
Calibration
Calibrate the device regularly with the integrated circular blank (4 mm thickness).
Thin testing objects
In case of the testing object features a thickness <20 mm measurement errors can occur.
Rough surfaces
On rough, embossed or otherwise uneven surfaces on the opposite side of the measured area
inaccurate measured values can arise.
Wear of the measuring head
Since the measuring head is made from plastics wear marks can appear after long-term use of
the device. Sometimes, polishing with sandpaper might help. In some cases it is inevitable that
the measuring head has to be replaced.
Metal Longitudinal Sound Velocity [m/s]
Aluminum 6250-6350
Antimony 3420
Beryllium 12900
Lead 2160
Cadmium 2770
Chromium 6200
Iron 5170
Gold 3240
Copper 4700
Magnesium 5800

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Continuation of page 10
Metal Longitudinal Sound Velocity [m/s]
Manganese 4660
Molybdenum 6250
Nickel 4900
Palladium 3250
Platinum 3960
Mercury 1450
Silver 3607
Titanium 6100
Uranium 3380
Bismuth 2000
Tungsten 5180
Zinc 4170
Tin 3300
Table 1 – Ultrasound velocity in pure metals
7. Environmental and Disposal Instructions
Used electronic devices are not allowed to be deposited in the household
waste according to European regulations [1], but have to be disposed
separately. The symbol on the dustbin indicates on the necessity of the
separation from the household waste. Please help to protect the
environment. Please asure that in case of not using the device anymore to
give it to the corresponding garbage pick-up.
Please inform yourself about the local waste calendar and your city or municipal administration,
respectively, about the opportunities of returning old equipment.
[1] Regulation 2002/95/EG of the European Parliament and Council for electronic old equipment

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8. More non-
destructive Gold
GoldScreenPen
The
precious metal testers
user to measure of
films and blisters)
detected up to a depth of 0.5 mm, is displayed on the digital
screen
www.gold
GoldScreenCard
The GoldScreenCard tests coins and ingots by utilising the
eddy current method. The penetratio
depending on the metal species
.
purchased software, features values of most common coins
and can be extended by the user with own values
solution for numismatists.
www.gold-analytix.com/gold
screenc
DensityScreenScale
The Goldanalytix
DensityScreenScale is a great device for testing
precious metals of different sizes for their authenticity.
coins, ingots or jewellery
can b
DensityScreenScale
because of different densities of the objects. The
density of gold, for example, is higher than the density of many
counterfeit alloys.
www.gold-
analytix.com/density
destructive Gold
-Testing Devices by Goldanalytix
GoldScreenPen
The
GoldScreenPen
is one of the most versatile electronic
precious metal testers
.
The world´s smallest probe tip enables the
user to measure of
coins, ingots and jewellery
films and blisters)
.
The measured conductivity
detected up to a depth of 0.5 mm, is displayed on the digital
screen
.
www.gold
-analytix.com/goldscreenpen-
electronic
The GoldScreenCard tests coins and ingots by utilising the
eddy current method. The penetratio
n depth is up to 4 mm
.
The database, included in the
purchased software, features values of most common coins
and can be extended by the user with own values
– the perfect
screenc
ard-gsc
GoldScreenBox
The GoldScreenBox
measures the conductivity of coins and
ingots by using the eddy current method with penetration
depths up to 650
µm. You can characterise the authenticity of
those precious metal objects even through capsules
bilsters up to a thickness of 3 mm.
www.gold-analytix.com/goldscreenbox
DensityScreenScale is a great device for testing
precious metals of different sizes for their authenticity.
Most fake
can b
e detected by using the
because of different densities of the objects. The
density of gold, for example, is higher than the density of many
analytix.com/density
-balance
is one of the most versatile electronic
The world´s smallest probe tip enables the
coins, ingots and jewellery
(even through
The measured conductivity
value, which is
detected up to a depth of 0.5 mm, is displayed on the digital
electronic
-gold-tester
measures the conductivity of coins and
ingots by using the eddy current method with penetration
µm. You can characterise the authenticity of
those precious metal objects even through capsules
, films and

13

14
Goldanalytix
Donaustaufer Str. 378,
Amtsgericht
MARAWE Verwaltungs GmbH, Seat
Amtsgericht Regen
Managers
: Dr. Jonas Mark, Dr. Peter Raster, Dr. Stefan Weiß
E
-
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 Regen
sburg HRB 14591
: Dr. Jonas Mark, Dr. Peter Raster, Dr. Stefan Weiß
Phone: [phone]
Fax: [phone]
-
Mail: [email protected]
www.gold-analytix.com
: Dr. Jonas Mark, Dr. Peter Raster, Dr. Stefan Weiß