GDI GeoExaminer 3D Metal Detector Ground Radar - Pro Version
Delivery time varies by product
Delivery time varies by product
Geo Examiner locator processes digitally the signal from pairs of transmitting & receiving probes continuously. When using probes, the signal is electrical, induced direct into the ground. GPR ground radars and VLF metal detectors at the opposite have electromagnetic wave type of signal that is transmitting aerial, towards the ground, therefore loses in penetration ability occur as it is absorbed from ground minerals – wetness.
The Geo Examiner electrical signal provides more effective ground coverage compared to the metal detectors, much like X rays, scanning completely the area between the probes. Once Geo Examiner signal meets ground resistance, it is attracted by the route of least resistance to travel from the transmitter to receiver probes. If masses of gold / precious metals are found in the signal path, they attract the signal as good conductors, producing low electrical resistance. Ground voids, tombs due to the traped air and dug ground, are bad conductors and produce high electrical resistance to Geo Examiner signal. The resistivity signals are converted to low data for metal targets and high data for voids on the screen. Older geophysical detectors operated with single transmitter / receiver probe, resulting to poor resolution. With Geo Examiner the signal outputs from 2 transmitters towards 2 receivers.
The software processes an average from the 2 received values, and optimized depth, sensitivity and detection for difficult targets is achieved. Before starting the scan, the user zeroes the ground data, for example the mineral and wetness readings, so their resistivity value is displayed as zero and does not interfere with the scan. Geo Examiner signal amplifier has 8 gain levels, for professional users to select the stronger according the soil level of difficulty.
3 INTEGRATED SYSTEMS
COMPUTER CONTROLLED DATA SCAN MODES
COMPUTER CONTROLLED DATA SCAN MODES
22 PROBES GEOPHYSICAL
To operate Geo Examiner 22 probes mode, it is necessary to acquire the accessory 22 probe system, module and 2 multi cables as shown. Select 22 PROBES, click START and Geo Examiner scans and visualizes automatically within 20 sec’s underground data from 11 probes on each of the 2 multi cables. The advantage of acquiring data from many scan points, increases the image resolution and speeds up the scan process. To compare, the 4 probe geophysical detectors require a lot more time for scanning the same area, and the scan image is not accurate. The ability of surveying using multi probes can be found to more expensive, bulky and complex 3D ground radar locators than the Geo Examiner.
GEO EXAMINER MAGNETOMETER MODE
The soil magnetic components or «iron oxides», have been created at the time when earth was a burning magma. They were stabilized aligned towards the magnetic north direction, that changes according the geological periods. Magnetic field is a “frozen” compass that varies in strength and orientation with different areas and materials, hence it can be measured. Human constructions distort the natural soil magnetism by creating stronger or weaker magnetic materials.
For example a void, ferrous metals, stone foundations, ceramic brick walls, a ceramic vase, a pit and in general objects or constructions originated by fire or those that have been fired or burned, show variations from the natural soil magnetic field. Also the ground surface is by nature more magnetic than the subsoil, since it receives for million years rain and heat – both factors that enhance the magnetic components. As a result every human excavation distorts the top soil magnetic components, generating a change to the local magnetic field. The GEO EXAMINER gradiometer probe consists of dual magnetic field sensors, positioned in line at 80 cm apart for increased sensitivity. The scan is been carried out on normal pace with real time data capture and visualization.
GEO EXAMINER 3D METAL DETECTOR MODE
The Geo Examiner metal detector has a simple operation, a “SENSITIVITY” ground tuning knob to cancel the interference from minerals, a “RESET” key to adapt to the changes of the ground conditions and a “DISCRIMINATION” control to reject trash targets. The metal detector produces various color tones to differentiate between the rejected and the accepted targets. The graph displays information of all metal targets, and the user can view the unwanted targets, like iron, foil, in blue and precious metals (gold for example) in red. The detector head can be swept right and left, according the selected sweep direction.
At every step it should be hold motionless above the new piece of ground to scan and visualize correctly. The Geo Examiner metal detector uses the “transmit / receive” coils technology like all metal detecting systems, but the signal procession is been carried out on the computer software. This way the weakest signals produced by the detector coils are amplified by the computer and presented as colorful 3D graphics. Deep targets have very low signal responses that are missed by the limited performance of the detector circuits. Targets that would be missed with an ordinary metal detector either because the signal was weak or even not heard at all, are indicated clearly by Geo Examiner. It is so sensitive, that even geological features like voids and man-made structures, may be visualized at some degree.
Accessories From Factory:
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Please check with your country’s custom office to determine what these additional costs will be prior to buying.
** Detector Power is not responsible and does not accept returns for the incorrect handling of the equipment sold and can not guarantee the customer the discovery of valuable treasures or metals if in the place of search there is really nothing. Detector Power guarantees that the devices detect efficiently as they are constantly evaluated by detectorists and manufacturers to provide the best results. We suggest our clients before making any purchase that analyzes the equipment well since they are high-end and very modern equipment that can not be returned.
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