OKM GeoSeeker Geo-electric Water and Cavity Detector

OKM German Detectors

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Detection Down To 250 Meters

Part Number: 1427

Are you looking for underground water resources or hidden cavities up to depths of 250 meters (820 ft)? The GeoSeeker is a professional geoelectrical water detector and cavity detector that measures the ground resistivity and visualizes its scan data in incredible 3D graphics. It is a very mobile and easy-to-operate geoelectrical detector designed and manufactured in Germany.

The GeoSeeker utilizes a geoelectrical measurement procedure based on Schlumberger to read the apparent resistivity of the ground. Based on that ground resistivity the detector is capable to locate underground water deposits, water-bearing gravel, and groundwater levels as well as cavities like caves, tunnels, chambers, and the like. Thus, the geophysical detector can be deployed as a water finder or cavity detector at the same time.

OKM GeoSeeker Features:

Geoelectric Water And Cavity Detector: Determines the ground resistance up to a depth of 250m and visualizes the measured values in 3D
Depth: Customers found water up to 250 meters
Use Cases: Water detection, cavity detection, geotechnical engineering
Operating Modes: Geoelectrical scan
Detectable Objects: Water deposits, water-bearing gravel, cavities

OKM GeoSeeker Use Cases:

Water Detection / Well Building
Geotechnical Engineering
Cavity Detection
Agriculture
Archaeology
OKM Search Services

OKM GeoSeeker Package Includes:

1x Controller incl. charger
1x Android Tablet
1x Waterproof and Shock Resistant Pelican Case
8x AA Battery 1.5 V (rechargeable)
1x Power Pack
1x Power Box incl. charger
2x Power Cable Drum (Ø 290 mm)
2x Voltage Cable Drum (Ø 120 mm)
2x Connecting Cable (2m)
4x Electrode
1x USB Flash Drive with OKM Visualizer 3D Studio Professional Edition
1x User's Manual
1x Pre-configured Windows Notebook

Special Features of the OKM GeoSeeker

Geoelectrical Measuring Procedure
3D Visualization
Color Display / Touchscreen
Internal Memory
Rechargeable High-Capacity Battery
Multilingual Operation
Wireless Technology

GeoSeeker Scan Modes

The GeoSeeker’s hardware components are completely controlled by a modern Android Tablet PC. All commands and measurement results are transferred wireless via Wi-Fi. Using the pre-installed software application you simply select one of three supported scan modes:

Active Scan (Accurate)
Active Scan (Quick)
Passive Scan

Active Scan (Accurate)
While using this scan mode the GeoSeeker utilizes two electrodes to inject electrical power into the underground soil. Two additional electrodes are measuring the potential difference (fall of voltage) at specific scan points to calculate the final resistivity value. This mode is used to detect underground water deposits, hidden caves, or even impervious layers and barriers within the underground soil. Inactive scans, you will be able to define a specific depth range in that you are going to conduct your measurement. So you will define a starting and ending depth between 5 meters (16 feet) and 250 meters (820 feet).
Active Scan (Quick)
This scan mode is a quick version of the accurate scan. It is also injecting electrical current into the underground and measuring the potential difference (fall of voltage) to calculate the resistivity of the ground.
Passive Scan
While using this scan mode the GeoSeeker only utilizes two electrodes to read the naturally occurring voltage of the underground (no electrical power is injected into the underground). This mode is used to detect underground flowing water only.

GeoSeeker Software

The GeoSeeker’s software application is providing simple step-by-step instructions to assist you in completing the measurement. You simply follow these pictured instructions until your measurement has been finished. After completing the measurement a graphical 3d representation of the measure values is created and displayed on the screen of your Tablet PC. Some color adjustment options are provided to optimize the graphical 3d visualization of your underground water deposits, water-bearing gravel, and groundwater level (shown in bluish colors) as well as cavities, caves, tunnels, chambers, or impervious layers (shown in reddish colors).

Analyze Scans in the App and in Visualizer 3D Studio

After completing the measurement, a 3D representation of the measured values is displayed on the tablet screen. Various color adjustment options allow optimizing the visualization of detected underground water deposits, water-bearing gravel and groundwater level (shown in blue) as well as cavities, caves, tunnels, chambers or impervious layers (shown in reddish colors).

Thanks to the major update of Visualizer 3D Studio in 2023, GeoSeeker measurements can now also be displayed, optimized and analyzed in greater detail in the 3D software. The new render view Volumetric 3D is a major milestone for GeoSeeker users.

GeoSeeker Transportation

The GeoSeeker’s hardware is built-in into a waterproof and shock-resistance Peli case. So your geoelectrical equipment is well packed and always ready for transportation.

Specifications of the OKM GeoSeeker

Voltage Cable Drums (Ø 120 mm)

Dimensions (H x W x D): 360 x 290 x 200 mm
Weight: 6.5 kg
Cable Length: 255 m
Markers: 15

Power Cable Drums (Ø 290 mm)

Dimensions (H x W x D): 120 x 120 x 45 mm
Weight: 0.65 kg
Cable Length: 26 m
Markers: 25

Controller (Receiving Unit)

Dimensions (H x W x D): 130 x 270 x 110 mm
Weight: 0.6 kg / 2.1 kg (with mounted cable reels and batteries)
Sample Rate: 4096 Hz (64 times oversampling of a 512 samples mean value)
Operating Time: Min. 16 hours (charged batteries)
Charging Time: 3 h / max. 5 h (empty batteries)
CPU: 80 MHz Cortex M3
ADC: 16 bit
Communication with Tablet PC: WLAN-Accesspoint, 2.4 GHz band, channel 6, WPA2
Communication with Power Box: 2.4 GHz band, on-demand, proprietary
Effective Range: –1400 to +1400 mV
Measurement Period Per Scan Point: Min. 16 seconds
Power Supply (8 AA batteries): 8 – 14 V DC
Input (For Charger): 12 V DC / 1.5 A
Input Resistance (Static): Approx. 12 MΩ

Power Box (Sending Unit)

Dimensions (H x W x D): 230 x 550 x 360 mm
Weight: 15.8 kg / 18 kg (with mounted Electrodes)
Operating Time: 100 h (min. Power) / 40 h (average Power) / 8 h (max. Power)
Charging Time: Max. 8 hours
Output: Max. 390 V / 0.5 A / 20 W
Communication With Controller: 2.4 GHz band, on-demand, proprietary
Input (For Charger): 24 V DC / 2 A
Internal Power Supply: Lead Acid Battery (2 x 12 V, 10 Ah)

Electrodes

Dimensions (H x W x D): 440 x 120 x 35 mm
Weight: 0.52 kg

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