Function:

• 1-D VES SP IP Sounding
• 2-D Resistivity & IP Imaging (Dual Mode)
• 3-D Resistivity Imaging only (No IP mode /Res mode Only)

Configuration:

2-D Resistivity Imaging

2-D Resistivity & IP Imaging

3-D Resistivity Imaging

Application:

• Hydro-geology for shallow and deep aquifer mapping or GW Exploration ,Water Recharge Zone Identification and Underground water inspection.
• Engineering geology for foundation study /pre-concrete structure identification, bedrock study and strata classification.
• Soil piping or Tunnel erosion study, karst and void investigation
• Land subsidence and Landslide geometry mapping Environment site assessment
• Saline Intrusion study for delineation of fresh water and saline zone
• Dam seepage study
• Energy resource
• City geophysical exploration
• Railway and bridge prospecting
• Metal and non-metal mineral resources prospecting
• City geophysical exploration
• Geothermal survey

Software Analysis:

2-D modeling for saline intrusion study

3-D modeling to investigate water content in Mine Floor

3-D slices vertically & transversely

Features:

• Portability and flexibility: the transmitting unit and the receiving unit are designed in one device, small and lightweight. The 200V internal battery of WDA-1B mainframe can conduct multi-electrode imaging in wide variety of environments.
• Unique and open measuring process control. User-defined power-on time and power-off time controls measuring process. The main frame can also monitor variation of electrode potential automatically. If the parameter exceeds the user-defined over-variation limit, it stops measuring, and wait to measure again until it becomes stable. Thanks to this function, WDA-1/WDA-1B system can ensure accurate measured result even in harsh environment.
• WDA-1/WDA-1B is designed with two cable sockets which enable cross-hole electrode array configuration works without switching control unit, and thus makes the measuring process much simpler and easier.
• Multiple functions: voltage and current range and small signal accuracy are allowed to increase dramatically, which makes it suitable to work with rock sampling tester, high-power IP receiver, general electrical method instrument, IP instrument, water finder, 2D and 3D multi-electrode electrical method instrument, etc.
• Measuring various parameters, wide application: it is able to acquire data of voltage (VP), current (IP), apparent resistivity (R0), Self-Potential (SP), apparent polarizability (M~M7), metal factor (G1~G7), half decay time (TH), deviation (r), induce polarization ratio (J), etc.
• High power supply, wide current range, high accuracy: maximum power reaches 9000W (1500V×6A), voltage input is 64Vp-p, small signal measurement precision is high (voltage is less than 0.1mV and current is less than 0.1mA with ±1% measurement precision), both of which make WDA-1/WDA-1B main frame an ideal device for regions of high resistivity and to achieve better measured results.
• On its panel there is an “B(∞)” port for pole-pole and dipole-pole electrode array. As to dipole-pole array configuration, ResA, ResB, and Res can be measured automatically with high efficiency and fewer errors.
• 16 kinds of electrode arrays of multi-electrode system: In addition to the 10 electrode arrays of general electrical resistivity survey system, there are 16 electrode arrays for multi-electrode imaging, namely, Wenner Alpha array (WENNER α), Wenner Beta array (WENNER β), Wenner Gamma array (WENNER γ), Three-pole direct array (δA ARRAY), Three-pole reverse array (δB ARRAY), Wenner Alpha 2 array (SCHLMBG), Self-Potential M array (SP-M), Self-Potential MN array (SP-MN), Charging M (CHG-M), Charging MN (CHG-MN), Two-pole Roll along array (2P AM), Three-pole Roll along array (3P A-MN and 3P AB-M), Dipole-dipole Roll along array (DIPOLE), MN-B, Cross-Hole Dipole/Equatorial Dipole-dipole array (CR-DIPOLE).
• Extendable system: data sampling and storing are controlled by pocket PC. Data management is easy. Software is flexible to be upgraded and extended (extending data storage capacity and collection software functions, also extend to special multi-electrode electrical instrument).
• Excellent anti-interface performance: integrated with multistage filtration and signal enhancement technologies and suppresser against common mode interference and differential mode interference. Measurement precision is high.
• Automatically achieving SP, drift and electrode compensation (maximum compensation reaches ±10V).
• Receiving unit supports transient over-voltage protection for input voltage; transmitting unit supports over-voltage protection, over-current protection and AB open-circuit protection as well as DC high voltage reverse connection protection.
• Earth resistance check: earth resistance of AB Current electrodes and MN Potential electrode can be inspected at any time.
• Diagnosis program can find the fault or failure quickly and accurately.
• Sealed constitution features waterproof and dust-proof design, long lifetime.
• Flexible option of control: control unit may also be notebook PC to remotely manipulate measurement.

Specifications:

Accessories:

Power Source (Rechargeable output upto 200v with 5Ah)

2D Resistivity Imaging cable (10 take out @10m spacing single mode)

2D Resistivity IP cable (10 takeout @10m spacing dual mode)

Solid Non-Polarized Electrode (IP Sounding)

Electrode with clips