WDDS-2/3 Geophysical Resistivity Sounding Meter
WDDS-2/3 digital D.C. resistivity sounding meter is a new generation of DC electrical resistivity equipment which is based on a series of advanced electrical equipment for one dimension resistivity sounding survey, and adopts 32-bit microcontroller technology and 24-bit A / D technology development.
Power: 3500W, 1000V(2000Vp-p),3.5A (over-current protection)
Function: SP survey, 1D VES(vertical electrical resistivity soudning)
| • Self-potential survey |
| • Resistivity sounding (1D VES) |
| • Metal and nonmetal mineral resources detection |
| • City geophysical exploration, railway and bridge inspection and so on |
| • Hydrology and engineering geology as seeking for ground water, inspecting dam base and flood protection levee for incipient faults |
| • Geothermal prospecting |
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| • 32-bit microcontroller technology and 24-bit A / D technology |
| • Up to 3500W of power supply, 48Vp-p voltage range |
| • USB port enables the instrument to communicate with other computers. |
| • Auto compensation of self-potential, drift and electrode polarization |
| • Receiver supports transient over-voltage protection for input voltage; transmitter supports over-voltage protection, over-current protection and AB open-circuit protection. |
| • Built-in 12V lithum battery( also support external 12v battery) for 20 hours continously work. |
| • Able to store measuring data for more than 150,000 times, including voltage, current, resistivity, relative error, SP, array constant, measuring point and so on. |
| Transmitting | |
| Max transmitting power | 3500W |
| Maximum voltage | ± 1000V(2000Vp-p) |
| Maximum current | ±3.5A (over-current protection) |
| Power supply waveform | duty cycle is 1:1, bipolar |
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Receiving |
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| Input impedance | ≥50MΩ |
| Input voltage range | ± 24V, ± 0.5%± 1LSB, 24 bit A/D |
| Delay time | 0.1 ~ 5s (programmable) |
| SP compensation range | ± 10V |
| Max current sampling resolution | 0.02μA |
| Suppression | 80dB for 50Hz or 60Hz (industrial frequency interference) |
| Current measurement | 3.5A, ± 0.5%± 1LSB, 24 bit A/D |
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Others |
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| LCD display | 160 * 160 dot matrix LCD |
| Storage | ≥1GB |
| Working temperature | -10°C~+50°C (Environmental), 95 %RH |
| Storage temperature | -20°C~+60°C (Environmental) |
| Power supply | built-in 12V lithium battery(or external 12V power supply),more than 20 hours of continuous work |
| Internal transmitting power (only WDDS-3) |
Max current is 300mA, Max voltage is 200V |
| Weight |
≤4.2Kg(WDDS-2); ≤5.5kg(WDDS-3) |
| Dimension | 270mm × 246mm × 175mm |
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