Customization: | Available |
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Accuracy: | 2mm |
Horizontal Line: | 1 |
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The principles of resistivity and IP (Induced Polarization) imaging are related to the electrical properties of subsurface materials and their response to an applied electric field.
Resistivity Imaging:
Resistivity imaging, also known as electrical resistivity tomography (ERT), is a geophysical technique used to determine the subsurface resistivity distribution. The principle is based on the fact that different materials have different electrical resistivities. The resistivity of a material describes its ability to resist the flow of electric current.
In resistivity imaging, an array of electrodes is placed on the ground surface and a small current is injected into the ground through two electrodes. The resulting potential difference is measured between other pairs of electrodes. By analyzing the distribution of electrical potentials, it is possible to infer the resistivity distribution of the subsurface. High-resistivity materials, such as dry rocks or minerals, will produce high potentials, while low-resistivity materials, such as water-saturated soils, will produce low potentials.
Transmitting Unit | |
Maximum Transmitting Power | 9000W |
Maximum Supply Voltage | ±1500V (3000Vp-p) |
Maximum Supply Current | ±6A (12Ap-p) |
Power Supply Pulse Width | 1~60s, duty cycle is 1:1 |
Tablet PC | |
Operating System | Windows 10 64-bit |
Processor | Intel Core M Processor |
RAM | 4GB |
Capacity | 128GB |
Internal Power Source (WDA-1B) | |
Maximum Voltage | 200V (four notches: 50V, 100V, 150V, 200V) |
Maximum Current | 0.7A |
Others | |
Power Supply | Internal large capacity lithium battery or 12V external power supply |
Working Temperature | -10°C ~ +50°C, 95% RH |
Storage Temperature | -20°C ~ +60°C |
Weight | ≤4kg (WDA-1), ≤6kg (WDA-1B) |
Dimension | 270mm x 246mm x 123mm (WDA-1), 340mm x 295mm x 152mm (WDA-1B) |