Products Description
RCWD-9 is an induced polarization equipment system designed for engineering geological investigation, underground anomaly detection, and resistivity and IP surveys. It combines resistivity measurement with induced polarization data acquisition to provide more information about subsurface structures and geological conditions.
The system consists of a data acquisition unit, multi-channel electrode switcher, and high-power inverter power supply. The equipment is housed in rugged protective cases designed for field conditions, including construction sites, muddy ground, dust, and uneven terrain.
With multi-electrode measurement and professional processing software, RCWD-9 can be used to build 2D or 3D subsurface models for engineering investigation. It is suitable for road and railway surveys, tunnel investigations, slope stability assessments, underground void detection, dam inspections, and other near-surface geological projects.
The system supports continuous rolling measurements along long survey lines, allowing survey teams to efficiently investigate large areas without extensive excavation or drilling.

Technical Parameters
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Transmitting |
|
|
Maximum power |
9000W(VES),2400W(Imaging) |
|
Maximum voltage |
1500V(VES),2400 peak-to-peak; 800V(Imaging), 1600 peak-to-peak |
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Maximum current |
6A(VES), 3A(Imaging) |
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Power supply pulse width |
1~60s, duty cycle is 1:1 |
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Receiving |
|
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Voltage |
± 80V (24 bit A/D) |
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Vp accuracy(before stacking) |
If Vp≥5mV, ±0.2% ±1LSB. If 0.1mV≤ Vp<5mV, ±1%±1LSB. |
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Current |
6A (24bit A/D) |
|
Ip accuracy(before stacking) |
If Ip≥ 5mA, ± 0.2% ±1LSB;If 0.1mA≤ Ip<5mA, then ± 1% ±1LSB.. |
|
Apparent Polarizability Accuracy |
±1% ±1LSB |
|
Suppression |
≥80dB, for 50Hz or 60Hz (industrial frequency interference) either in common mode or differential mode interference |
|
Input impedance |
>100MΩ |
|
SP compensation range |
± 10V |
Key features
Strong Industrial Interference Suppression
Multi-stage power-frequency filtering improves data stability in complex environments such as urban areas, high-voltage power lines, and transportation infrastructure.
High-Resolution Resistivity & IP Imaging
Combining resistivity and induced polarization measurements helps identify underground voids, fractured zones, weak layers, and other subsurface anomalies through 2D and 3D imaging.
Continuous Rolling Survey
The multi-electrode system supports continuous rolling measurements for long roads, railways, slopes, and other linear projects, improving survey efficiency over large areas.
Portable & Non-Destructive Design
The modular acquisition unit, electrode switcher, and power supply are easy to transport and deploy. The system enables subsurface investigation without extensive excavation, reducing disturbance to existing roads, foundations, and other structures.

Customer Benefits
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Reduce Underground Construction Risks
Early detection of potential underground voids, fractured zones, weak geological structures, and other anomalies can provide additional information for road, tunnel, foundation, and slope projects.
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Reduce Investigation Costs
Electrical resistivity and induced polarization surveys can cover larger areas without relying entirely on drilling or excavation. This can help reduce the number of investigation points required during preliminary site surveys.
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Improve Geological Interpretation
The accompanying processing software converts field measurements into visual 2D or 3D sections, helping engineers compare subsurface anomalies with geological and engineering information.
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Improve Survey Efficiency
Multi-electrode acquisition and continuous rolling measurements allow survey teams to cover long linear projects more efficiently than point-by-point investigation methods.
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Adapt to Different Field Conditions
The modular equipment design and rugged protective cases make the system suitable for construction sites, slopes, roads, tunnels, and other demanding outdoor environments.
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