Geologger-GWS 3i & GW Combination Probe

The Geologger GWS3i is a combined logging system that enables simultaneous measurements of three items: natural gamma, electric logging (16″ and 64″) and spontaneous potential by connecting it to the GW Combination Probe (Model-3493).

After excavation, by inserting a GW Combination Probe into the borehole and moving it up and down, the ground characteristics at various depths can be obtained.



  • Touch-panel tablet PC provides excellent operability.
  • A 10.1-inch high-brightness color LCD display has been adopted.
  • You can easily copy data from the USB2. 0 port to a USB flash drive.




Applicable probe GW Combination Probe (Model 3493)
Probe diameter φ40 mm
Probe length 1,700mm (detachable at M1 electrode)
Electric logging of measurement target (electrode interval 16", 64"•SP)
  • Measuring range (SP): ± 2000 mV
  • Flowing current:1, 2, 20, 60 mA, Auto
  • Power-on cycle: 20 Hz
  • Transmit voltage: 60V max
Natural gamma Measuring range:0 - 20 kcps

System integration

Display 10.1 inch Touch Panel with IPS Liquid Crystal Display (1920 x 1200 pixels)
OS Windows10 Professional 64bit
Storage device SSD 128GB
External I/F USB2.0×1 port
Power supply DC 12V Battery (10.8~13.2V)
Operating temperature -5 to +45˚C
Dimensions 420(W) x 175(H) x 335(D)mm (excluding protrusions)
Weight Approx. 10kg


Printer 110mm wide high-density thermal printer