Centralized Multi-electrode 2D Resistivity Imaging System

Application:  

1. Water resources, metal and nonmetal mineral resources detection

2. City geophysical exploration, railway and bridge inspection 

3. Hydrology and engineering geology as inspecting dam base and flood protection levee for incipient faults

4. Geothermal prospecting

Function:   

1. 1D resistivity sounding

2. 1D induced polarization sounding

3. 2D Electrical resistivity imaging

Technical specification:

 WDJD-4 Res/IP Meter

Receiving: 

Voltage precision±24V, ±0.4% ± 1LSB, 24 bit A/D

Input impedance≥50MΩ

Apparent polarizability precision±1% ± 1LSB

SP compensation range±10V

Current channel6 A, ±0.4% ± 1LSB, 24 bit A/D

ResolutionVoltage: 0.1 micro volt; Current: 0.2 micro ampere.

Suppression≥80dB for 50Hz industrial frequency (common mode interference or differential mode interference).

Transmitting: 

Max transmitting powerFor general Res/IP sounding, 6600W.

For multi-electrode Res imaging, 1125W, limited by WDZJ-4 switcher

For Res cable, 1350W

For IP cable, 2400W

Max voltageFor general Res/IP sounding, ±1100V (2200V peak to peak)

For multi-electrode Res imaging, 450V DC (limited by WDZJ-4 switcher)

Max currentFor general Res/IP sounding, ±6A

For multi-electrode Res imaging, 2.5A DC (limited by WDZJ-4 switcher)

Pulse width: 1~60s, duty ratio 1:1

Others: 

Display: 160 × 160 dot matrix LCD

Storage: ≤1GB

Working temperature: -10°C~+50°C, 95 %RH

Storage temperature: -20°C~+60°C

Instrument power: internal 12V 9Ah rechargeable battery , lasts for 30 hours (or 12V external power supply)

Weight: ≤ 4.4 Kg

Dimension (L×W×H): 270mm X 246mm X 175mm

 WDZJ-4  Switcher

Max electrode connected: 60 and 120 (for option)

Insulation impedance: ≥500MΩ

Max working voltage: 500VDC

Max working current: 2.5ADC

Power supply: Internal 7.4V 4AH rechargeable lithium battery, last for continuously 25 hours work

Working temperature: -10°C~+50°C