1.Ground water exploration
3.Archaeological site investigation
4.Cave, void, and sinkhole location 1. Scanning For Leaks In The Amistad Dam
5.Other engineering use
Method to measure:
Electrical Resistivity Imaging (ERI), streaming potential/spontaneous potential (SP), and induced polarization (IP) imaging with our Electrical resistivity tomography equipment.
ERT: Multi-electrode electric Res tomograph, which is the extension of 1D Res VES. Layout dozens or hundreds electrode on one survey line, with automatic conversion of control electrode, the instrument completes automatic composition and fast measurement of many kind of array and program in Res method. It realizes combined measurement of electric profiling and electric sounding and is benefit for shorten time and gaining section information.
1.Res/IP VES ( Resistivity /Induced polarization)
2.Res VES and SP
Survey accuracy: if Vp≥10 mV then ± 5‰ ± 1 LSB, if Vp < 10 mV, then ±1% ± 1 LSB
Survey precision: if IP≥ 10mA then ± 5‰ ± 1 LSB, if IP < 10 mA, then ±1% ± 1 LSB
apparent resistivity measurement accuracy: ±1% ±1 LSB
depression is more than 80dB for 50Hz industrial interference (common mode or different mode interference)
input impedance: ≥50MΩ
maximum supply voltage: 900V
maximum supply current: 5A