GD-10 Basic is the lowest configuration mode in the GD-10 series and can be used for one-dimensional sounding (VES), including resistivity and natural potential testing.
GD-10 is a world's leading multi-functional DC method instrument for SP, resistivity and IP testing, supporting both conventional electrical soundings and cross-section testing with 2D/3D ERT array.
GD-20 is a new multichannel electrical method system with an independent 5/12-channel design. It can simultaneously measure a maximum of 10 points with ERT, which greatly improves the efficiency of the field test. GD20 can be used for SP, apparent resistivity and IP tests.