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WGMD-4
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Product Description
Overview
GD-20 Electrical system（Multi Channel）
The WGMD-4 Multi Electrode 2D/3D Resistivity Imaging System is an advanced geophysical survey tool designed for detailed subsurface imaging. This system utilizes multiple electrodes to inject current into the ground and measure the resulting potential differences. By analyzing these data, it generates high-resolution two-dimensional (2D) and three-dimensional (3D) images of subsurface resistivity variations. This technology is widely used in various fields such as hydrogeology, environmental engineering, archaeology, and mining to map subsurface structures with enhanced accuracy and detail. The multi-electrode setup allows for efficient data collection over large areas, making it a valuable tool for both shallow and deep subsurface investigations.
※Accurate and efficient: Under the premise of maintaining good repeatability, the time required to measure a 552-point section is generally no more than 15 minutes.
※Large storage: In high-density mode I (only resistivity parameters are stored), no less than 43,680 measurements can be stored; in high-density mode II (resistivity and current parameters are stored), no less than 21,840 measurements can be stored. Power is not lost.
※Grounding check: In field work, you can easily and quickly check whether each electrode is grounded at any time.
※Electrode arrangement: There are up to 18 types of devices and they are expandable. It can be scanned and measured according to fixed sections (electrode arrangements include AMNB, ABMN, AMBN, AMN, MNB, A-MN-B, self-electrode M, self-electrode MN, charge M, charge MN) or continuously rolled and scanned according to variable sections (electrode arrangements include A-M, A-MN, AB-M, AB -MN, MN-B, A-MN rectangle, A-MN-B, cross-hole dipole). Among them, continuous rolling scanning measurement allows the measurement section to be connected to any length without changing the total number of electrodes, which is convenient for long section tracking and allows users to solve practical problems at low cost and high time efficiency.
※All electrode arrangement measurement sections can arbitrarily specify the section starting electrode number, which is convenient and flexible.
※ Groundwater exploration
※ Mineral detection
1. Centralized high-density electrical method system
| (I) WDJD-4 multifunctional digital DC induced polarization instrument (measurement and control host) | |
| Receiving part | |
| Voltage channel | ±24V, ±0.4% ±1 word, 24-bit A/D |
| Input impedance | ≥50MΩ |
| Apparent polarization rate measurement accuracy | ±1%±1 word |
| SP compensation range | ±10V |
| Current channel | 6A, ±0.4% ±1 word, 24-bit A/D |
| Suppression of 50Hz power frequency interference is better than 80dB | |
| Transmitter part | |
| Transmitter power | 6600W |
| Power supply voltage | ±1100V (i.e. 2200Vp-p) |
| Power supply current | ±6A (i.e. 12Ap-p) |
| Power supply waveform | 1~60 seconds |
| Others | |
| Storage capacity | ≥1GB |
| Instrument power supply | built-in lithium battery, can work continuously for more than 30 hours |
| Host interface | A, B, M, N, DC high voltage, external battery and charging, 2 interfaces with distributed high-density cables, RS-232 and USB, etc. |
| Volume | 270mm×246mm×175mm |
| Working temperature | -10℃~+50℃, 95%RH |
| Storage temperature | -20℃~+60℃ |
| (2. )WDZJ-4 multi-channel electrode converter (multiple converters can be used in series to expand the number of system electrodes) | |
| Conversion electrode number | 60 |
| Insulation performance | ≥500MΩ |
| Instrument power supply | built-in lithium battery, can work continuously for more than 25 hours |
| Working temperature | -10℃~+50℃ |
| Volume | 340mm×295mm×152mm |
| (3.)Centralized two-dimensional high-density resistivity cable (optional) | |
| Cable | 32 cores, outer diameter Φ6mm |
| Number of each converter | 2 (30 electrode taps/electrode), special requirements are specified by the user when ordering |
| Tap spacing | specified by the user when ordering (usually 5m or 10m) |
| Cable insulation | insulation between any two core wires ≥500MΩ/500V |
| (4).Centralized two-dimensional high-density resistivity electrode (optional) | |
| Copper electrode | Φ12mm×280mm, with plug-in card |
| Number Quantity | Specified by the user when ordering |
2. Distributed high-density electrical method system
(I) WDJD-4 measurement and control host (technical indicators are the same as above)
(II) Distributed two-dimensional high-density resistivity, two-dimensional high-density IP switch cable (optional)
Cable: The sheath is made of wide-temperature polyurethane material, with an outer diameter of Φ8mm
Quantity: specified by the user when ordering
Working temperature: -20℃~+70℃
(III) Distributed two-dimensional, three-dimensional high-density resistivity, two-dimensional high-density IP switch electrode (optional)
Stainless steel electrode: Φ10mm×280mm, with stainless steel spring
Quantity: specified by the user when ordering
We are a big scale corperation integrating R&D, production and sales. We specialized in lab,survey and electricequipment export for more than 15 years. We aims to provide high quality equipment to customer at moderate price. Wenow have more than 200 employees and 4 factories, Covering an area of 20 acres. Except for the top quality of ourproduct, customer are always satisfied with our 24*7 after sale service. We can always develop a good product proposalbased on customer's requirement.
