Description

GEO EXAMINER ground radar

Specifications Display: 10.1” LED, 1280 x 800 resolution Processor: INTELL Core Atom Input device: Resistive touch screen Operating system: Windows 10 Working memory: 2 GB Data memory: 64 GB HDD Feedback: Voice commands, visual Dimensions & weight: 250 mm x 180 mm x 50 mm / 1200 grams Αaccessories: AC/DC adapter, Power Cord, Protective bag Safety Certification: CE Battery: Lithium polymer, lasts up to 9 hours With external battery up to 15 hours Charging Time (Battery fully discharged): ca. 1 Hours Leather carry bag and neck straps

• 3 integrated systems Geophysical locator: 4 or 22 probe resistivity measurement. Manual ground rejection control to work at all soil types Magnetometer: 1 m. antenna. Automatic ground cancel 3D Metal Detector: with discrimination. Mineral rejection Other optional antenna systems are under development! • Frequency range Geophysical locator : 137 Hz Magnetometer : +/- 50,000 nT Metal Detector : 25 KHz • Computer controlled data collection – Automatic Mode: Recording and Readings are captured automatically at intervals selectable from 1/sec to 100/sec – Manual Mode: Manual capture. Real time data graphics for both modes • Data Points 10.000 scans per survey, ability to store unlimited data files on hard disk • Data point density Dependent on step length, distance between measured profiles and system used : from 5 cm to 10 m.	• Resolution 10 Bit / 5V • Ambient temperature -20 to 55 C • Data processing On site real time 2D and 3D target presentations, interpretation, modeling, replay, exporting to bmp, jpg, metafile, png and data file formats, printing • Standard equipment – GEO EXAMINER GPR Computer, -Interface, – Geophysical locator with 4 probes / cables, in watertight case • Additional equipment – Geophysical 22 probes module, 22 probes with their 2 x 17m multi cables, – Magnetometer in hard carry case, – Metal Detector

Geophysical locator survey with probes

GEO EXAMINER analyses digital the signal from pairs of transmitting and receiving probes continuously. Working with probes is like “X-raying”, the soil between the probes is scanned by the induced signal completely, and all structures laying in become visible. The EXAMINER probe signal is ELECTRICAL and it has a direct connection to the ground through the probes, the ELECTRICAL signal travels through minerals and wet ground without loosing its penetration ability. Ground radars ( GPR ) and VLF systems use ELECTROMAGNETIC signal, the ELECTROMAGNETIC waves are transmitted aerial towards the ground, minerals and wet ground often absorb them and the depth is reduced significantly. The EXAMINER ELECTRICAL signal encounters ground resistance and takes the path of least resistance to travel from transmitters to receivers.	Precious metals in the ground due to their conductivity create LOW electrical resistance and attract the EXAMINER signal. At the opposite a voids due to the air trapped inside creates HIGH electrical resistance. Therefore voids, caves have a high Soil Data profile while metals indicate low. Conventional instruments on the market use only one transmitter and receiver, but the EXAMINER is on a league of its own! Its twin transmitter / receiver will push the signal at even greater depths than single ones, also detects small changes in ground geology, the result is accuracy, better depth, more resolution from underground. The EXAMINER is adjustable to all ground types, canceling out errors from minerals and wet ground. Also the signal has 8 gain levels to select the suitable for every area.
22 Probes Select “22 Probe” and click on “START X 10”, underground data are automatically collected and viewed, from 2 multi-cable strings of 17 meters and 11 electrodes each. This is a great advantage over conventional geophysical systems on the market that use only 4 electrodes which make the field work time consuming – with poor images. The multi rod data acquisition is found on geophysical locators that retail twice the cost! Storing of values, co-ordinate field settings and target imaging are operated by the locator. The automatic EXAMINER data collection speeds up the scan, which also will be enhanced with detailed imaging ! For 22 probe survey the “22 Probe module” is needed, along with the 2 multi cables shown.
	4 Probes Α conventional 4 electrode survey using 4 x 10 meter cables, the operator moves manually the transmitting and receiving probe pairs, controlling data capture. A useful mode for limited spaces, target pinpointing or where finer surveys are in demand.

GEO EXAMINER
magnetometer & 3D metal detector

The magnetic components of the soil «iron oxides», have been created at the time when earth was a burning magma, and have been dispersed in the soils at a varying percentage for every area. Human constructions distort the natural soil magnetism by creating stronger or weaker in strength magnetic materials.

For example a void in the ground, ferrous metals, stone foundations, walls from ceramic bricks, a ceramic vase, a pit and in general objects or constructions originated by fire or those that have been fired or burned, show a variation from the 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 on the local magnetic field.
The EXAMINER magnetometer antenna consists of dual magnetic field sensors, positioned in line at 80 cm apart for increased sensitivity. The survey is been carried out on normal pace with real time data capture and visualization.



The EXAMINER 3D metal detector has a very 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 that rejects trash targets. 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 EXAMINER 3D metal detector uses the “transmit / receive” coils technology like on 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 the EXAMINER. It is so sensitive, that even geological features like voids and man made structures, may be visualized at some degree. With the discrimination control set, 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, iron, foil, in blue and precious metals (like gold for example) in red.