Comparison of water and cavity detectors OKM GeoSeeker

The name GeoSeeker stands for water detection as well as cavity detection. Both detectors are utilizing geoelectrical principles to measure the resistivity of the underground soil. According to the Schlumberger procedure four electrodes are placed into the ground to determine its resistivity.

OKM GeoSeeker Mini
OKM GeoSeeker Mini: Geoelectrical water and cavity detector for up to 100 m (328 ft) depth penetration.
OKM GeoSeeker
OKM GeoSeeker: Geoelectrical water and cavity detector for up to 250 m (820 ft) depth penetration.

Both, the OKM GeoSeeker as well as the OKM GeoSeeker Mini, are utilizing two electrodes to inject electrical power into the underground soil, whereas two additional electrodes are measuring the potential difference (fall of voltage) at specific scan points to calculate the final resistivity value.

Comparison of GeoSeeker Features

The following table compares the features of both detectors:

OKM GeoSeeker Mini OKM GeoSeeker
Maximum Depth 100 m (328 ft) 250 m (820 ft)
Total Weight 14 kg 35 kg
Data Visualization Data values on screen,
2D scan images
Data values on screen,
3D scan images
Active Scan Yes Yes
Passive Scan No Yes
Quick Scan No Yes
Maximum Voltage Output 320 V 390 V
Display / Operation Embedded Touchscreen Android Tablet-PC (WiFi)
Operation Time approx. 8 hours approx. 16 hours
Power Supply External OKM Power Pack
(12.7 V, 4.4 Ah)
Internal Lead Acid Battery
(2 x 12 V, 10 Ah)
Memory Capacity 4 measurements Unlimited,
depending on free memory of Android device

Both geoelectrical detectors are able to detect underground objects and structures like:

  • underground water deposits
    • ground water
    • fresh water, drinking water
    • underground watercourse, water veins
  • hidden cavities
    • tunnels, galleries
    • caves, chambers, sepulchers, tombs
  • impervious layers and barriers

For additional questions concerning our water and cavity detectors you may contact your local distributor or our sales and support team.