Multi-electrode 2/3D Resistivity&IP Imaging system Vertical Electrical SoundingTomograph Equipment for Geophysical Exploration

The WGMD-9 super high-density electrical method system is a new generation of high-density electronic method developed by our institute based on many years of development and production of advanced electrical method instruments. It integrates the latest electronic technologies such as Chinese handheld computers, Bluetooth, 24-bit AD, and high-power control. Electric method system, the size and weight of the instrument have been significantly reduced, the main technical indicators and functions are ahead of similar instruments at home and abroad, and can work better in various complex field environments. It can be widely used in metal and non-metallic mineral resource exploration, urban geophysical prospecting, railway bridge exploration, etc. It can also be used in hydrological and engineering geological exploration such as searching for groundwater, determining the location of hidden dangers in reservoir dam foundations and flood control embankments, and can also be used in geothermal exploration.
This system uses WDA-1, 1A super digital DC electric meter as the measurement and control host. It can realize centralized two-dimensional high-density resistivity measurement by optionally equipping WDZJ-3 multi-channel electrode converter, centralized high-density cables and electrodes; also Optional distributed high-density resistivity or IP cables and electrodes can be used to achieve distributed two-dimensional and three-dimensional high-density resistivity measurements and distributed two-dimensional high-density IP measurements. The specific measurement functions and composition of the system are as follows:

Host machine Converter DC high voltage power Cable & Electrode Centralized 2D multi-electrode Res Survey WDA-1 WDZJ-4/WDZJ-120

External

Centralized cable and electrode Distributed 2D/3D multi-electrode Res Survey WDA-1 N/M

External

Distributed multi-electrode Res survey cable and electrodes Distributed 2D/3D multi-electrode Res & IP Survey WDA-1 N/M

External

Distributed multi-electrode Res & IP survey cable and electrodes

Functional features of the instrument

• Lightweight and flexible--It integrates advanced transmitting and receiving functions, is small in size and light in weight, and the built-in 96V power supply (only WDA-1A type) can handle high-density resistivity measurement tasks in most areas.
  Advanced measurement and control method--All electrode arrangements adopt rolling measurement method. By moving the electrodes, the cross section can be infinitely connected, and the end of the cross section becomes easy: single-point re-measurement and measurement from any point can be done at will.
• Unique and open measurement process control--The power supply time and power outage time of each data measurement process can be flexibly selected, and the instrument can automatically monitor the change gradient of the electrode potential. When it exceeds the user-set threshold, it will automatically delay the waiting time set by the user, and start the measurement after the electrode potential returns to stability, thereby ensuring that higher data acquisition quality can be obtained under complex conditions. Ultra-large power supply, ultra-wide range, ultra-high precision - up to 7200W (1200Vx6A) power supply capacity, 64Vp-p ultra-wide voltage input range, extremely high small signal measurement accuracy (when the voltage is as small as 0.1mV and the current is as small as 0.1mA, it can still give +1% measurement accuracy), so that the instrument can be better applied to high-resistance areas to obtain deeper and better measurement results.
• Bluetooth technology, wireless remote control - the first international and domestic remote control of the instrument host by a handheld computer with Bluetooth wireless communication technology. Within 10 meters of the instrument host, it can easily set parameters, start measurement, and transmit and display measurement results, and experience unprecedented convenience. Handheld computer control, powerful functions - the full Chinese handheld computer realizes human-machine interface and acquisition control, acquisition parameter setting, data display and storage, high-density electrical method chromatogram drawing, etc. are fast and intuitive, allowing you to easily complete field measurement work.
  Easy to expand, unlimited possibilities--Data acquisition control and data storage are all completed by the handheld computer, and the expansion of data storage capacity and the expansion of acquisition software functions (such as adding special high-density measurement devices) will be easier to achieve.
• Equipped with dual distributed high-density cable interfaces, cross-hole high-density measurement no longer requires a transition switch controller, and the measurement process is simpler and easier.
  Perfect anti-interference technology--Adopting multi-pole filtering and signal enhancement technology, integrated electrical interference suppressor function (with super anti-common mode interference and differential mode interference capabilities), high measurement accuracy. Powerful handheld computer functions--Based on high hardware configuration, the handheld computer is also equipped with a number of practical software, users can schedule, wirelessly access the Internet, and use mobile Word, Excel, PowerPoint, Media Player and other software for mobile office and entertainment.
• Automatically perform natural potential, drift and electrode polarization compensation, with a compensation range of up to +10V: the receiving part has instantaneous overvoltage input protection capability, the transmitting part has overvoltage, overcurrent and AB open circuit protection capabilities, as well as DC high voltage reverse connection protection capabilities. Ground resistance check--The grounding condition of the electrode can be checked at any time, which is convenient and practical. The diagnostic program can quickly and accurately determine the location of the fault and the main damaged components. The imported fully sealed box has the advantages of waterproof, dustproof and long life. Flexible control options - you can also use a laptop to remotely control the instrument host to complete the measurement work.

Application

This system is widely used in:

1. water resources,metal and non-metal mineral resources exploration;

2.city geophysical exploration,railway and bridge inspection;

3.hydrology and engineering geology as inspecting dam base and flood protection lecee for incipient faults

4.geothermal prospecting

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