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ERT (Electrical Resistivity Tomography) is a technique commonly used in the field of geophysical exploration, which uses resistivity measurement equipment to detect the distribution and properties of underground materials. ERT resistivity instruments can be used in underground mining, geological exploration, offshore exploration and other fields.

The principle of the ERT instrument is to use resistivity to detect the distribution and properties of subsurface materials. Resistivity is the ratio of a substance's resistance to its ability to conduct electricity. Different types of materials have different resistivities, so the type and distribution of subsurface materials can be inferred by measuring the resistivity. The ERT instrument calculates the resistivity distribution of underground materials by setting multiple electrodes on the ground, using current to form an electric field underground, and measuring the potential difference at different positions.

ERT instruments have several advantages. First, it can measure the distribution of subsurface material over a wide range, so it can provide important information for fields such as underground mining and geological exploration. Secondly, the results measured by ERT instruments can provide a high-precision map of underground material distribution, thereby helping users better understand the underground environment. In addition, the ERT instrument also has the advantages of simplicity, low cost, environmental protection and no pollution, so it is a popular technology in the fields of geophysical exploration and offshore exploration.

The application fields of ERT instruments are very wide. In the field of geological exploration, ERT instruments can be used in mineral resource exploration, groundwater resource investigation, geo-technical engineering and environmental monitoring, etc. In the field of underground mining, ERT instruments can be used to detect the distribution of mining materials such as coal mines, metal mines, and non-metal mines, thereby helping users better plan mining plans. In the field of offshore exploration, ERT instruments can be used to explore resources such as seabed oil and gas.

Generally speaking, ERT instrument is an important equipment in the field of geophysical exploration, which has a wide range of applications and has many advantages. In the future, with the advancement of technology and the expansion of application fields, ERT instruments will play a more important role in the fields of geophysical exploration, underground mining and offshore exploration.