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Underground Resources Detector in Geological Exploration Instrument
***1D resistivity sounding
***1D induced polarization sounding
***2D Electrical resistivity imaging
>>Technical Parameters of the Underground Resources Detector:
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 power For 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 width1~60s, duty ratio 1:1
Others
Display160 × 160 dot matrix LCD
Storage≤1GB
Working temperature-10°C~+50°C, 95 %RH
Storage temperature-20°C~+60°C
Instrument powerinternal 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 connected60 and 120 (for option)
Insulation impedance≥500MΩ
Max working voltage500VDC
Max working current2.5ADC
Power supplyInternal 7.4V 4AH rechargeable lithium battery, last for continuously 25 hours work
Working temperature-10°C~+50°C
>>Applications of the Underground Resources Detector:
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
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