OKM EXP 4000 Ground Scanner

OKM EXP 4000 GROUND SCANNER


Pulse Induction Metal Detector

image

The eXp 4000 is the successor of the eXp 3000. Advanced technology allows measurements in brillant resolutions. The handling is absolutely easy and possible without the need of a laptop. The measurement unit of the eXp 4000 includes a pc-module which calculates the data to be displayed immediately on the color screen. All measured data will be stored in the internal 128 MB memory and can be transfered to a normal computer to evaluate and determine depth, size and position of targets with our professional software Visualizer 3D.

The eXp 4000 has many different functions especially for treasure hunters. So it has:

  • Distinction of metals ( gold, silver, iron )
  • Detection of cavities ( bunkers, tunnels, burial chambers, graves )
  • Intuitive menu navigation with voice output
  • Easy handling and compact equipment
  • No laptop is needed for working

To ease the work with eXp 4000 and the subsequently image evaluation the following functionality was integrated:

  •   Automatic display of object differentiation
  •   Automatic signal stabilization during measurement
  •   Automatic antenna identification
  •   Pre-filtration of potential mineral structures

The comprehensive equipment of the eXp 4000 is only one point that makes it a unique treasure hunting unit. Every single probe was optimized for its own purpose. So you can work with the following antennas:

  •   GPR-Antenna ( 25cm, 50cm, 75cm, 100cm )
  •   Antenna for metal discrimination ( DDV-System )
  •   Antenna for tunnel detection
  •   Super Sensor for high resolution ground scans

Technical Specifications


The following technical indications are medial values. During operation small variations are quite possible.

Operating temperature 
0 °C – 50 °C
Storage temperature 
-20 °C – 60 °C
Air humidity 
5 % – 75 %
Waterproof 
No
Dimensions (H x W x D) 
430mm x 150mm x 260mm
Weight 
About 3kg
Voltage 
9,6 - 14,4 VDC, 22W maximum
Safety class 
IP40
Operating time (delivered power supply full charged, 25°C) 
Approx. 3 hours
Display 
300mcd backlight, 6.4" diagonal, 640 x 480 Pixel TFT, Color
Processor 
300 MHz Prozessor, INTEL i586-compatible
Working memory 
128 MB RAM
Data memory 
128 MB
Feedback 
Audible, visual

Data transmission (USB)

Technology 
USB
Maximum Transfer Rate 
19200 Baud

Computer, minimum requirements

The computer is not part of the scope of delivery. The indicated values should help you for a correct selection of a suitable computer for analysis of your measured results.

CD-ROM drive 
Minimum 4x
Interface (Data transmission) 
USB
Free disk space 
Minimum 50 MB
Working memory (RAM) 
Minimum 256 MB
Graphic card 
Minimum 128 MB, OpenGL-compatible
Processor 
Minimum 1.2 GHz
Operating system 
Windows XP, Windows Vista, Windows 7, 98SE, 2000

Scope of delivery


In the following table you can see the complete delivery contents and all optional accessories.

The used symbols have the following signification:

x   =   x times included  
  =   Not included
  =    Optionally available, only for additional charge.

Description Basic Gold Pro
3D software ( "Visualizer 3D" ) with data cable 1 1 1
Control unit 1 1 1
GPR-antenna ( 25cm ) 1 1 1
Headphones 1 1 1
Joystick 1 1 1
Power Pack incl. charger and travel adapter 1 2 1
Telescopic rod assembly 1 1 1
User's manual 1 1 1
Waterproof and shock resistant Peli case 1 1 2
Antenna for tunnel detection 1
DDV, Disc Detector Visualization System 1 1
FS-Thermoscan 1
GPR-antenna ( 100cm ) 1
GPR-antenna ( 50cm ) 1
GPR-antenna ( 75cm ) 1
Super sensor 1 1

Discoveries


The metal detector eXp 4000 has been successfully used in various countries. Here only some of the discoveries which has been made with this 3d gold detector. These are only some testimonials. We cannot publicate all discoveries because we respect the privacy of our customers. 

If you have a OKM metal detector, ground penetrating radar or other geophysical instrument and like to share your discovery with us, please contact us via email info@okmmetaldetectors.com or use this online form. We would be happy to share your treasure story with other OKM users. You can also inform us if you like to handle your story anonymously.



Treasure story button

Fascinating gold discovery in Saudi Arabia

A customer from Saudi Arabia informed us about this beautiful discovery. The treasure has been located by the metal detecting instrument eXp 3000 - the former model of eXp 4000. Here some pictures of the findings which has been made. 

Golden Statue of a woman - found with eXp device
  • golden statue Saudi Arabia
    • Golden Statue
    • Length: 6.5 cm
    • Width: 3 cm
  • golden statue Saudi Arabia
    • Golden Statue
    • Length: 6.5 cm
    • Width: 3 cm
  • golden statue Saudi Arabia
    • Golden Statue
    • Length: 6.5 cm
    • Width: 3 cm
  • golden statue Saudi Arabia
    • Golden Statue
    • Length: 6.5 cm
    • Width: 3 cm

Nofretete Statue - detected with eXp series

  • Nofretete Statue found in Saudi Arabia
    • Nofretete Statue  
    • Length: 11 cm
    • Width: 6 cm
    • Weight: 0.5 kg
  • Nofretete Statue found in Saudi Arabia
    • Nofretete Statue  
    • Length: 11 cm
    • Width: 6 cm
    • Weight: 0.5 kg
  • Nofretete Statue found in Saudi Arabia
    • Nofretete Statue  
    • Length: 11 cm
    • Width: 6 cm
    • Weight: 0.5 kg
  • Nofretete Statue found in Saudi Arabia
    • Nofretete Statue  
    • Length: 11 cm
    • Width: 6 cm
    • Weight: 0.5 kg

  • Nofretete Statue found in Saudi Arabia


    • Nofretete Statue  
    • Length: 11 cm  
    • Width: 6 cm  
    • Weight: 0.5 kg  
  • Nofretete Statue found in Saudi Arabia

    • Nofretete Statue  
    • Length: 11 cm  
    • Width: 6 cm  
    • Weight: 0.5 kg  

Pharao statue - discovered with eXp series

  • Pharaoh Statue found in Saudi Arabia
    • Pharaoh statue  
    • Length: 17.5 cm  
    • Width: 6 cm  
    • Weight: 250 g  

  • Pharaoh Statue found in Saudi Arabia
    • Pharaoh statue  
    • Length: 17.5 cm  
    • Width: 6 cm  
    • Weight: 250 g  
  • Pharao Statue found in Saudi Arabia
    • Pharaoh statue  
    • Length: 17.5 cm  
    • Width: 6 cm  
    • Weight: 250 g  

  • Pharaoh Statue found in Saudi Arabia
    • Pharaoh statue  
    • Length: 17.5 cm  
    • Width: 6 cm  
    • Weight: 250 g  
  • Pharaoh Statue found in Saudi Arabia
    • Pharaoh statue  
    • Length: 17.5 cm  
    • Width: 6 cm  
    • Weight: 250 g  
  • Pharaoh Statue found in Saudi Arabia
    • Pharaoh statue  
    • Length: 17.5 cm  
    • Width: 6 cm  
    • Weight: 250 g  
  • Pharaoh Statue found in Saudi Arabia
    • Pharaoh statue  
    • Length: 17.5 cm  
    • Width: 6 cm  
    • Weight: 250 g  
  • Pharao Statue found in Saudi Arabia
    • Pharaoh statue  
    • Length: 17.5 cm  
    • Width: 6 cm  
    • Weight: 250 g  

Ancient dagger from Middle Age found with eXp

This ancient dagger was found by metal detector eXp in a depth of 60 cm. The discovery is claimed to be from the early Middle Age. After unsuccessful searches with different other metal detectors the dagger has been detected with the basic equipment of the 3d Earth Imager eXp incl. the GPR antenna 25 cm. Only the iron blade kept well preserved over all the long time the object was buried in the ground. There is only a small piece left which belongs to the wooden handle of the dagger. The exact place of this discovery is undisclosed. The dagger is of high historical value.

Ancient dagger

Ancient dagger

Gold seeker in Greece detects historic gold coins

A Greek gold prospector, metal detecting with Earth Imager eXp 4000, found several gold coins. He told us about his finding during a visit in our company along with his photos. He located the treasure in approx. 2 meters depth. These ancient coins are very precious, as confirmed by archaeologists. Near to the place of the buried gold coins he also located an ancient spearhead.

Ancient spearhead

Spearhead

  • Greek gold coin
    • Greek gold coin
  • Greek gold coin
    • Greek gold coin
  • Greek gold coin
    • Greek gold coin  
  • Greek gold coin
    • Greek gold coin  

Gold bullions of the greek guerillas located - The lost gold of the guerillas

Some of our lucky customers found a wooden chest filled up with gold bars in Greece. Those bullions were buried during the World War II by Greek guerillas. The treasure hunters and archaeologists used different metal detectors and geophysical instruments like the Earth Imager eXp 3000, the predecessor of eXp 4000.

Chest with gold bullions

chest filled with gold bars from WWII

3d scan of chest with gold bars

3d scan image showing the wooden box filled with gold bars

This great discovery was publicated in the Lost Treasure magazine, a famous american treasure hunting magazine. Here the article from the September 2006 issue of Lost Treasure Magazine:

Article Lost Treasure Magazine gold discovery

This discovery has also been reported in the Dutch treasure hunter magazine. Here the article:

Dutch treasure hunting magazine gold discovery

Historical tomb of shepherd discovered in Iran

Also in the beginning of 2008 satisfied customers inform us about their new discoveries with one of our metal detectors. An old grave including human remains together with some copper rings, and valuable historical goat or sheep bells has been detected in Iran by using the Future 2005 and gold detector eXp 4000. 

The grave, probably the tomb of a shepherd, including its valuable objects has been located in a depth of 210 cm in clay soil. The ancient bells with sizes 10 cm, 12 cm, 15 cm length and 6 cm, 9 cm, 13 cm width show different forms and unique structures. Each bell includes 1, 2 or 3 small balls who create the pleasant sound when ringing the bell. In former times bells were hung on goats or sheep to keep evil spirits away, so does inhabitants tell.

Ancient goat bell from Iran

Ancient goat bell detected by 3d metal detector eXp 4000

Ancient targets found in Iran

Ancient goat bell detected by 3d metal detector eXp 4000

3d image of ancient target

3d scan image of goat bells

3d scan image of ancient target and tomb of shepherd

Ancient goat bell detected by 3d metal detector eXp 4000

Along with the pictures of the excavated objects the customer send us his scan images of the area. In both graphics there are typical indications of metal parts in red color visible. Inside the second image even the grave is identifiable (blue colouration).

Wine bottles from 17th century excavated

Dutch bottles

Various bottles which has been located at the coast of Suriname.

Wine bottles

Bottles found with 3d ground scanner eXp 4000

Onion bottles

Some of the located bottles dated on 1620 - 1715.

Detected ancient bottles

The small team of treasure hunters found more than 200 bottles with eXp 4000.

They probably located a secret pirate camp while scanning with the 3d ground scanner eXp 4000. The treasure site was hidden about 150 meters from the coast line. On the camp site there were charred wood and also rocks who surrounded ancient fire places. Along with the bottles they found a Spanish silver sword and old silver coins.

Spanish sword

Spanish sword dating from 1620 found with gold detector eXp 4000

Silver coin

Silver coin found with metal detector for treasure hunting eXp 4000

There are a lot of more hidden treasures all around the world, which still wait to be discovered. Start now metal detecting and order this successful gold detector eXp 4000 now!

Accessories of eXp 4000


The geophysical instrument exp 4000 comes with many optional connectible probes and accessories. So it is possible to select the accessories you like to get your individual package with optimal performances. You can compose for example your ultimate treasure hunting package, your specialized cave detection package or others. Or you can optimize the metal detector in accordance to your searching area (flat ground, uneven ground, mountains, beach, jungle, urban terrain etc.). Here you can find some short info about each detecting probe.

GPR probes for ground scanning

GPR antennas (25cm, 50cm, 75cm, 100cm) 

Scan the underground and get a 3d image!

These horizontal gpr antennas can be used for ground scanning in different areas to locate metals, voids or water. They has to be connected to the metal detector main unit and are used in the Ground Scan mode to receive a 3d image of the underground. The gpr probes are available in different sizes which optimize scanning in different conditions. The gpr antenna 25cm is specially interesting for searchers who have to scan areas with difficult access like for example in the mountains or in the jungle, where are many bushes, stones or trees. This smallest antenna can be used for a detailed research and mostly used to detect small objects like gold or silver coins, rings, gold nuggets etc. The scanning process is longer because of the small sized antenna and the small area it covers, but very suitable to search in difficult terrain. This probe is included in the basic package of eXp 4000. 

The gpr antenna 50cm is a compact scan probe suitable for nearly all measurement procedures. The larger gpr antennas with a length of 75 and 100 cm are used to scan large areas and flat ground, to get a fast overview about the complete terrain.

 

DDV system - antenna for metal discrimination

DDV system (antenna for metal discrimination) 

Discriminate accurately metal targets!

The DDV system is a visual metal detector system to discriminate between different materials. This antenna for metal discrimination can be used to find out if there is iron, aluminium, gold or silver situated under the ground. You can adjust the discriminator of the DDV system to certain metals or to filter out non valuable metals which you don't like to detect. Than the metal detector coil will only react on the selected metal. For example it can be adjusted on gold to filter out other materials like iron. This probe is specially interesting for gold seekers and prospectors.

This powerful metal detector is useful to avoid digging for non-precious metals or other material which you are not looking for. So you can find quickly your treasure. The metal detector find the targets and give the information via a audible sound over the headphones and also visually via the monitor of the eXp 4000.

Technical characteristics of the DDV system:

Operating temperature 
0 °C – 50 °C
Storage temperature 
-20 °C – 60 °C
Air humidity 
5 % – 75 %
Waterproof 
No
Dimensions (H x W x D) 
20 x 14 x 6 cm
Diameter of coil 
22 cm
Weight 
about 2,1 kg
Antenna for tunnel detection

Antenna for tunnel detection

Locate underground chambers or hidden rooms! 

This probe is a high resolution sensor which is focused on the research and detection of hidden voids like tunnels, rooms, chests, tombs, graves and others. You can receive a 3d underground image with this antenna, where voids are represented in particularly and with high resolution. Metals will also be visible in the scan image, but are not the main focus of this sensor. 

The antenna for tunnel detection is a 50cm vertical probe which can be carried in the hand. So it is very practicable in various terrains also in uneven grounds. The small size allows an accurate pinpointing of the exact position of a located underground anomaly. 

The antenna for tunnel detection is a must for all seekers who wants to look for cavities, bunkers, tunnel systems, tumulus, tombs and graves, treasure chambers, chests, boxes or non-metallic targets like vases or hollow-ware.

Features:

  •    Specialized on detection of voids
  •    High resolution probe
  •    Lightweight, easy to use and comfortable on-site
  •    Dimensions: 50 x 10 x 10 cm
  •    2 years warranty

Super sensor

Deep search of precious metals!

The Super sensor is a multi task sensor which can be used in the operating modes Magnetometer, Ground Scan and Discrimination. The Super sensor can be used for high resolution ground scans (3d images) and for discriminating between ferrous (e.g. steel, iron) and non-ferrous metals (e.g. gold, silver) in high depth. This one meter vertical probe is specialized on detecting precious metals and can locate small sized metals deeper than the gpr probes. Also it can discriminate between precious metals (e.g. gold, silver) and ferrous metals (iron) deeper than the DDV system, to avoid useless diggings in high depth. Because of the integrated sensor technology it offers good results even in hard, salty or mineralized soils. 

This one meter vertical probe can be hold in your hand easily and so is easily usable in areas with difficult access (bushes, trees, rocks) or uneven ground (stones, holes in the ground).

The Super sensor is an absolute must for all professional treasure hunters and gold seekers.

The Super Sensor has an integrated discrimination possibility to discriminate ferrous and non-ferrous metals. No other metal detector can keep up with the Super Sensors depth penetration. A discrimination control prevents the user from digging out undesirable items like nails, cans or other trash.

Features:

  •    Detects metals and voids
  •    High resolution scans
  •    Specialized on detection of metallic targets
  •    Discrimination possibility of ferrous metals, non-ferrous metals and cavities in combination with the software Visualizer 3D
  •    Lightweight
  •    Easy, comfortable handling
  •    Dimensions: 100 x 10 x 10 cm
  •    2 years warranty
  • Super sensor and metal detector eXp 4000

Thermoscan for cavity detection and infra-red scanning

Thermoscan

Long Range Locator with infra-red laser pointer!

The Thermoscan is a long range locator which recognize differences of temperatures on the surface of the ground. Due to this infra-red measurement it is possible to locate voids like tunnels, treasure chambers, bunkers or caves under the ground. 

Combined with the metal detector eXp 4000 the Thermoscan can make a 3d image of a special area, without the need to walk over this specific area. The device works contact-less and therefore a field can also be researched from far distances. So it is possible to scan rock faces, walls or other terrains to which you do not have any access. This is an important advantage if the field is impassable by the searcher.

Possible applications are:

  •    the detection of cavities (graves, tombs, chambers, chests, bunkers, tunnels, vases, hollow-ware ...),
  •    the visualization of the distribution of temperatures as well as
  •    the measurement of differences in temperatures.

The FS-Thermoscan stands up for its practicable usage and compact design. Create high resolution 3d graphics of the underground by measuring the differences in temperature on the surface of the ground.

Because of the integrated laser pointer pinpointed measurements and accurate positioning of hidden voids are possible. 

Infrared measurement with Thermoscan
Pinpointing with Thermoscan
VLF emitter for very low frequency

VLF emitter system (4 pieces)

(not available anymore)

Get the best results and the deepest penetration into the ground!

The VLF emitters can be placed on each corner of your scan area to improve the 3d image and receive the maximum possible penetration depth. So it is possible to locate small metallic objects deeper under the ground than without using these emitters. Additionally this system improves your scan result. All located metals under the ground will be visible more clearly in the three-dimensional graphic. 

VLF is the shortcut for Very Low Frequency which is a low wave frequency range. Usual VLF (Emitter) devices use a frequency in this range to send out an alternating magnetic field into the ground, which can be disturbed by a metallic target. This disturbance of the magnetic field can be analysed in detail and so it is possible to make a conclusion to targets situated under the surface.

3d scan without vlf emitter

The figure on the left side shows a located metallic target without using VLF emitters. The structure of the object is destroyed and not very accurate.

3d scan with vlf emitter

The figure on the right side shows the same measurement while using VLF emitters. The shape of the located target looks much clearer, also the background is straightened.

Advantages of the usage with FS Future Series

VLF emitters are optional available components which can be used to improve a measurement with the metal detecting device eXp 4000. VLF emitters send out very low frequencies to reinforce the magnetic field. Because of this amplification anomalies of the underground like metallic targets (gold, silver, copper etc.) becomes better visible

The 3d image of the underground becomes more clear than without using the VLF emitters. So you can better recognize the shape and structure of buried treasures.

Usage:

One set of VLF emitters consists of 4 emitter sets with sending antenna which have to be placed on the ground, in every corner of your measuring area. Remove the antenna of every VLF emitter and place it on the ground in a distance of about 50 cm from the emitter main unit. Adjust every emitter to your current ground conditions and power it on. Now measure your area with the metal detecting instrument eXp 4000 in operating mode Ground Scan like usual.

Technical characteristics of VLF emitters:
Operating temperature 
0 °C – 50 °C
Storage temperature 
-20 °C – 60 °C
Air humidity 
5 % – 75 %
Waterproof 
No
Dimensions (H x W x D) 
25 x 22 x 17 cm
Weight 
about 7,4 kg (one emitter)
Frequency Range 
7 kHz - 60 kHz
Amplified Output Power 
10 W
Internal Battery 
24 V
Operating Time (full charged battery) 
about 3 hours
Charging Time 
about 10 hours
Maximal Sphere of Action 
about 10 m

Operating modes


Here you can find a short explanation about all operating modes of metal detector eXp 4000. 

Magnetometer

With an integrated magnetometer you can research the ground by using the magnetic field of the earth. This mode is very useful to locate easily small metallic objects like coins, rings etc. which are situated near to the surface. The maximal penetration depth in this mode is about 2 meters.

Can be operated with: 
GPR antennas (25, 50, 75, 100 cm), Super sensor, Antenna for tunnel detection



Magnetometer to find ferrous metal

Ground Scan

Ground Scan is a measuring method with graphical evaluation. In this mode the device will create a complete image of the underground in 3D. Detection of objects and cavities up to 25 meters as well as determination of position and depth of objects is possible. 

Can be operated with: 
GPR antennas (25, 50, 75, 100 cm), Super sensor, Antenna for tunnel detection



Ground Scan for 3d image of underground

Discrimination

To distinguish between ferrous and non-ferrous metals as well as cavities you can work in this mode. By using the Super Sensor you can discriminate up to 25 meters under the ground.

Can be operated with: 
Super sensor



Discrimination between precious metal and ferrous metal

Metal Detector

In this mode you can work with a powerful detector system to find out exactly what type of metal is under the ground. This detector can be purchased optional. Discrimination between iron, gold, bronze, silver and aluminium is possible up to 2 meters depth. 

Can be operated with: 
DDV system



Metal Detector to discriminate gold, silver and iron objects

Thermograph

By the help of FS-Thermoscan differences in temperature on the surface of the ground can be located. So warm and cold areas can be determined and it is possible to conclude to conclude to voids and other anomalies. In the operating mode Thermograph you can work in live time with the FS-Thermoscan, and recognize immediately the differences in temperature on the surface of the ground and so can locate hidden voids.

Can be operated with: 
FS-Thermoscan



Thermograph for infrared measurement

Thermoscan

By the help of FS-Thermoscan differences in temperature on the surface of the ground can be located. So warm and cold areas can be determined and it is possible to conclude to conclude to voids and other anomalies. In the mode Thermoscan you can create graphical infra red images to visualize the distribution of temperatures of a field.

Can be operated with: 
FS-Thermoscan



Thermoscan for infrared measurement and 3d view

OKM Balck Hawk

OKM EXP 4000 Ground Scanner - View of main unit with screen



The Earth Imagers are the stars of our "FS - Future Serie". They can represent graphical measuring results without using any additional computer. The large number of optional accessories makes them our most individually adaptable devices. Every customer can purchase only that what he needs for his purposes.

Videos


Acknowledgement

Product Images


Front side metal detector eXp 4000Main unit with monitor eXp 4000Back side of metal detector eXp 4000Side view of metal detector eXp 4000Side view of metal detector eXp 4000GPR probe for ground scanningGPR probe for ground scanningExternal battery for power supplyExternal battery for power supplyMetal detector eXp 4000 with VLF emitterMetal detector eXp 4000 with VLF emittermetal detector eXp 4000metal detector eXp 4000treasure detector eXp 4000treasure detector eXp 4000Treasure detector eXp 4000Treasure detector eXp 40003d metal detector eXp 40003d metal detector eXp 4000eXp 4000 used with Super sensoreXp 4000 used with Super sensorMetal detecting with eXp 4000 in ChinaMetal detecting with eXp 4000 in ChinaTests of exp 4000 in USATests of exp 4000 in USAGround scanning with eXp 4000 and horizontal probeGround scanning with eXp 4000 and horizontal probeMetal detector field tests in USAMetal detector field tests in USA