OKM eXp 7000: Advancing Ground Scanning Technology to a New Level

The OKM eXp 7000 represents a significant advancement in professional-grade ground scanning and metal detection technology, purpose-built for archaeologists, geologists, surveyors, treasure hunters and other field professionals who require precise subsurface mapping. As the successor to the eXp 5500 and eXp 6000, the eXp 7000 incorporates more scan modes, additional sensors, and numerous engineering refinements, making it one of the most capable detection systems in its category.

Dual-Technology Detection System: Magnetic Field Sensor + VLF

The eXp 7000 employs a dual-technology approach, integrating Magnetic Field Sensor technology with Very Low Frequency (VLF) detection. The Magnetic Field Sensor system is highly sensitive to variations in the Earth’s magnetic field, enabling it to locate ferrous and large, deeply buried objects that may not register with conventional detectors. VLF technology, by contrast, transmits a continuous sine wave to measure the conductivity of subsurface targets, enabling discrimination between different metals and improved small-object detection. Together, these systems deliver superior depth penetration, precise target identification, and adaptability across a wide range of soil conditions and mineralization levels.

Engineering Improvements from the eXp 6000 to the eXp 7000

OKM designed the eXp 7000 based on direct feedback from professional users of the eXp 6000, addressing previous limitations while introducing entirely new capabilities.

1. Probe Connection and Reliability
The eXp 6000 used a magnetic probe holder with wireless connectivity, which was prone to disconnection during physical contact. The eXp 7000 replaces this with a robust hard-wired mount system, eliminating unintended interruptions and ensuring consistent performance.

2. Ergonomics and Weight Distribution
The new carrying system features optimized weight distribution, a lighter control unit, and reduced-weight probes for improved handling during extended field sessions.

3. Enhanced Visualization and Data Transfer
The onboard display now offers higher clarity and improved rendering of scan results for faster, more accurate field interpretation. Data transfer has also been modernized, replacing the older USB drive method with a direct cable connection for increased reliability.

4. Battery and Component Efficiency
The eXp 7000 features a replaceable battery to support long-term operation and ensure serviceability after years of extensive use, similar to how smartphone batteries can lose performance over time.

For extended field sessions, OKM includes a 19,200 mAh (71 Wh) USB-C Power Pack, capable of providing one additional full charge to the controller. This allows for significantly more operating time during prolonged scanning projects.

Development Backed by Real-World Field Expertise

The eXp 7000 was developed by OKM engineers who actively conduct in-field testing on archaeological sites, geological surveys, and industrial projects worldwide. These projects range from historical site mapping, such as the Halbes Schloss survey, to large-scale underground infrastructure detection. The engineering process also includes feedback from OKM detection specialists and staff who regularly operate VLF detectors and 3D ground scanners in their personal fieldwork. This integration of engineering precision with real-world operational experience ensures that the system is optimized for practical, high-performance use.

Proven Performance in Diverse Global Conditions

Building on the proven success of the eXp 6000, the eXp 7000 has been tested in regions across North and South America, Africa, Europe, and Asia. The system has performed reliably in environments ranging from mineralized soils in arid regions to the high-humidity tropical rainforests of French Guiana. Its ability to adapt to varied soil compositions, moisture levels, and environmental conditions makes it suitable for both controlled excavation sites and challenging, undeveloped terrain.

Detection Range Capabilities

Preliminary air tests indicate that the eXp 7000’s VLF system can detect small targets—such as coins—at depths of up to 25 cm (9.8″). Its 3D ground scan technology can locate large underground features such as tanks and bunkers at depths reaching 25 m (82 ft) in optimal conditions. 

The eXp 7000 uses a 7-sensor array with a total scan width of 40 inches and 6.5-inch sensor spacing. By comparison, the eXp 5500 runs a 5-sensor array with a 32-inch total width and 8-inch spacing.

Because the eXp 7000’s extenders are slightly longer, the sensors sit closer together. This denser 6.5-inch arrangement improves target discrimination, increases resolution, and sharpens detection precision—producing clearer, more detailed scan images than the 5500 at the same pass.

The extender length on the eXp 7000 also brings practical benefits. It remains easy to carry during sweeps and provides better stability while scanning. In short, it strikes a strong balance of portability, comfort, and performance.

Versatility Across Challenging Terrains

The eXp 7000 is designed to operate effectively in diverse environments, from open fields to dense forest and uneven ground. Its compact single Super Sensor is ideal for scanning narrow or irregular spaces, while Manual Impulse Mode provides precise control for difficult-to-access areas. This adaptability ensures accurate results even when vegetation, slopes, or obstacles are present.

Key Features and Specifications

• Detection Capabilities: Metals, cavities, tunnels, and mineral deposits.
  
• Operating Modes: Eight total, including 3D Ground Scan, Tunnel Scan, Magnetometer, Mineral Scan, Pinpointer, Live Scan, VLF Scan, and 3D VLF Scan.
  
• Wired Operation: All components communicate via robust hard-wired mount system, eliminating unintended interruptions and ensuring consistent performance.
  
• Control Interface: 6.5-inch TFT color touchscreen (1024×768 px) with multilingual graphical UI.
  
• Data Analysis: Visualizer 3D software for post-scan interpretation.
  
• GPS Integration: The GPS module is integrated into the system but can be deactivated when not needed. For users who require location-based measurements, the integrated GPS module can be enabled to record positioning data alongside scan results. If GPS tracking is not desired—for example, due to privacy or regulatory reasons—the module can be easily deactivated.
  
• Power Supply: Rechargeable high-capacity battery (7 hours is tested, may vary depending on usage and screen brightness.) with replaceable design.
  
• Construction: Lightweight carbon-fiber probes and telescopic rod for ergonomic handling.
  

eXp 7000 a Major Performance Enhancements Over the eXp 6000

Expanded Scan Width
The eXp 7000 can operate with up to seven SuperSense sensor pairs simultaneously, achieving a maximum scan width of 100 cm (40″). Configurable operation allows the use of:

• 1 sensor pair – 1 cm (0.25″) scan width
• 4 sensor pairs – 60 cm (24″) scan width
• 7 sensor pairs – 100 cm (40″) scan width

This flexibility allows users to optimize coverage and resolution based on the survey requirements, significantly improving field efficiency.

Dual-Probe System

• SuperSense probe supporting six advanced modes.
• VLF coil for two additional scanning modes.
  

Faster Data Acquisition
With multiple sensor pairs operating in parallel, large areas can be scanned quickly without sacrificing resolution.

Improved User Interface
An upgraded, more responsive touchscreen interface enables faster menu navigation and real-time visualization of scan data.

Ergonomic and Data Handling Upgrades
Lightweight components, balanced design, USB-C data transfer, and a replaceable battery all contribute to greater operational flexibility.

Feature	eXp5500	eXp 6000	eXp 7000
Probe Connection	Cable connection (wired)	Magnetic probe holder, wireless, prone to disconnection	Hard-wired probe mount, robust connection
Scan Width	Up to 32“ (5 sensors)	0.25″ (single sensor)	Up to 33 1/2″ (7 sensors)
Number of Sensors	1, 3 or 5	1	1, 4, or 7
Operating Modes	3	6	8
Ergonomics	Heavier carbon rod system	Slightly heavy, older carrying system	Optimized weight distribution, lighter control unit and probes
Visualization	Optimized weight distribution, lighter control unit, and probes	Standard visualization	Improved high-clarity scan visualization
Data Transfer	USB-C cable transfer to PC	USB drive transfer	Direct USB-C cable connection
Battery	Direct USB-C cable connection – Replaceable battery	Non-replaceable	Direct USB-C cable connection – Replaceable battery
Detection Depth (Small Targets – Example: a Coin)	Up to 25 cm (VLF) Up to 2 m (3D Ground Scan)	NA	Up to 25 cm (VLF) Up to 2 m (3D Ground Scan)
Detection Depth (Large Structures – Example: 55 Gallon Drum)	Up to 25 m (ideal conditions)	Up to 2 m (ideal conditions)	Up to 25 m (ideal conditions)

Pricing

The eXp 7000 is available at USD 39,990, positioning it within the top tier of professional ground scanning instruments. Its combination of multi-technology detection, high-resolution scanning, and advanced ergonomic design makes it an investment for serious field professionals seeking maximum performance in subsurface exploration.

For more information about the eXp 7000, visit www.okmamericas.com