OKM GeoSeeker Mini Water and Cavity Detector


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Product Highlights

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Product Description

OKM GeoSeeker GeoSeeker Mini Water and Cavity Detector
Can detect underground water deposits and cavities up to maximum 100 meters (328 feet). 2 Year Limited Warranty Included.

Like its big brother OKM GeoSeeker, the OKM GeoSeeker Mini utilizes a geoelectrical measurement procedure based on Schlumberger. The water detector - that can also be used to detect underground cavities - determines the soil resistivity. Based on that ground resistance the detector is able to detect underground water resources like fresh water, drinking water, water-bearing gravel and groundwater level.

Due to the fact that underground water has a very good conductivity, you can conclude that very bad conductivity is a hint for hidden cavities like caves, tunnels, chambers and underground rooms. Thus the geophysical detector OKM GeoSeeker Mini can be deployed as water finder and cavity detector at the same time.

The water detector OKM GeoSeeker Mini is operated via touchscreen. You will select the measurement depth as well as the amount of scanning points and simply follow the graphical instructions. Due to the usage of easy to understand images and icons the OKM GeoSeeker Mini is multilingual by using pure picture language.

During the measurement the electrodes have to be replaced several times to measure the ground resistance at certain places. All instructions can be read from the color display, where the results are presented after each single scan. At the very end of a measurement the final result is shown as a graphical 2d scan image.

After finishing a geoelectrical measurement the final result is calculated according special formulas to generate a representative 2d scan image of the underground resistivity.

Depending on the selected depth penetration, you can detect underground water deposits and cavities up to maximum 100 meters (328 feet). If you need a water detector that measures way deeper you should have a look at its bigger brother OKM GeoSeeker, that can measure up to 250 meters (820 feet).

The geoelectrical detector OKM GeoSeeker Mini can be used to detect underground water resources as well as hidden cavities. Both structures can be located due to its specific characteristics of electrical resistivity.

Water Detection

Underground water resources have a good electrical conductivity and measuring its resistivity will result in low resistance values. The capability of water detection is very useful for:

  • dowsers, water finders
  • well builders, drilling companies
  • agriculture, fruit growing
  • mining, building contractors

Detectable subsurface water deposits could be:

  • ground water level
  • fresh water, drinking water
  • underground watercourse, water veins
  • underground water streams, headwaters

Cavity Detection

Hidden cavities and hollow spaces have a rather poor electrical conductivity and measuring its resistivity will result in high resistance values. The capability of cavity detection is useful for:

  • archaeologists, historians
  • treasure hunters
  • geotechnical engineering
  • military services
  • building contractors

Detectable subsurface cavities could be:

  • caves, tunnels
  • galleries and manholes
  • chambers, sepulchers, tombs
  • bunkers, vaults, cellars, rooms

The following technical indications are medial values. During operation small variations are quite possible. Technical changes due to development are possible!

Technical Specifications:

  • Control Unit
    • ADC : 16 bit
    • Weight : 4.50 kg
    • Data memory : 4 GB
    • CPU : 80 MHz Cortex M3
    • Input (max.) : 11 - 13 VDC, 30 W
    • Output (max.) : 320 V, 0.4 A
    • Input Resistance (static) : approx. 12 MΩ
    • Dimensions (H x W x D) : 410 x 340 x 180 mm
    • Display : 3.5” Resistive touch, 480 x 320 Pixel
    • Display CPU : Cortex M3, 32 MHz, 128 KB RAM
    • Effective Range (differential) : -1400 to +1400 mV
    • Operating Time (average Power) : approx. 6 - 8 hours
    • Measurement Period per Scan Point : min. 16 seconds
    • Data Sampling Rate : 4096 Hz (64 times oversampling of a 512 samples mean value)
  • Electrodes
    • Weight : 0.40 kg
    • Dimensions (L x W x D) : 270 x 120 x 35 mm
  • Cable Drum with Power Cable and Voltage Cable
    • Weight : 3.60 kg
    • Dimensions (H x W x D) : 360 x 290 x 200 mm
    • Power Cable Length : 100 m
    • Power Markers : 10
    • Voltage Cable Length : 10 m
    • Voltage Markers : 10


  • Manufacturer
  • Instruction Manuals
  • SKU
  • Manufacturer SKU
  • Product Type
    Metal Detectors
  • Factory Included Accessories
    Control unit with touch screen, (4) Electrodes, (2) Extension Cables (2 m), (2) Power Cable Drums (Ø 290 mm), (2) Voltage Cables (10 m), Power Pack incl. charger and travel adapter, User manual
  • Warranty
  • Interchangeable Search Coil
  • Arm Strap
  • Adjustable Shaft
  • GPS
  • Audio Tones
  • Depth Indication
  • Programmable Target ID
  • Target ID
  • Pinpoint Mode
  • Vibration Mode
  • Search Flashlight
  • Backlit Display
  • Volume Control
  • Bluetooth Compatible
  • Interchangeable Headphones
  • Rechargeable System

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