2D Electrical Resistivity Tomography (ERT) Equipment with Multi-electrodes for Groundwater and Soil and Rock Layer Investigation
Product Description
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 Tomography:
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.
Main Applications of 2D Electrical Resistivity Tomography (ERT) Equipment with Multi-electrodes for Groundwater and Soil and Rock Layer Investigation
By utilizing relevant parameters of apparent resistivity and induced polarization method, the instrument is widely used in many aspects including metal and non-metal resources exploration, energy exploration, city geophysical exploration, railway and bridge engineering exploration, etc.
Search for groundwater, solve the human and animal drinking water issue as well as industrial and agricultural water issue. Determine the hidden safety risk location in reservoir dam foundation and flood-control dyke, find faultage zone and collapse column, landslides, coal mining goaf, search for geothermal and other hydrological, engineering geological exploration.
Accessories made by our factory with 60-channel or 120-channel multiplex electrode switch, also can be used for multi-electrode resistivity survey system.
Technical Specifications of 2D Electrical Resistivity Tomography (ERT) Equipment with Multi-electrodes for Groundwater and Soil and Rock Layer Investigation
| 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) |
Electrical Resistivity Tomography (ERT) imaging equipment is a geophysical technique used for subsurface imaging and exploration. It operates by measuring the electrical resistivity of the ground or structures to create images that depict variations in subsurface properties. This non-destructive method is widely utilized in geotechnical investigations, environmental studies, archaeology, and civil engineering.
ERT equipment typically consists of electrodes placed on the ground surface or inserted into boreholes, which inject electrical current into the subsurface. The resulting potential differences are measured to determine the resistivity distribution of the materials underground. By interpreting these measurements, professionals can identify features such as groundwater tables, voids, bedrock, contaminants, and archaeological artifacts.
The advantages of using ERT include:
High Resolution Imaging:
ERT provides detailed images of subsurface structures and properties, offering insights into geological formations and buried objects.
Non-Destructive and Non-Invasive:
Unlike drilling or excavation, ERT does not disrupt the ground or structures, making it environmentally friendly and cost-effective.
Versatility:
ERT can be applied in various terrains and environments, from urban settings to remote locations, providing valuable data for diverse applications.
Quantitative Analysis:
It allows for quantitative interpretation of subsurface resistivity data, aiding in accurate characterization and modeling.
Time Efficiency:
ERT surveys can cover large areas relatively quickly, enabling efficient data collection and rapid decision-making in field investigations.
2D Geophysical Resistivity IP (Induced Polarization) Imaging Survey Equipment Groundwater Metal Mining Results:
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