| Customization: | Available |
|---|---|
| Accuracy: | 1mm |
| Horizontal Line: | 1 |
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WDJD-4A: Urban Geophysical Resistivity Exploration Instrument Hydrological Exploration Resistivity System Non
WDJD-4A is a new DC electrical instrument developed on the basis of WDJD-3A, with higher accuracy and more measurement parameters. It is widely used in metal and non-metal mineral resource exploration, urban geophysical exploration, railway bridge exploration, etc. It is also used in hydrological and engineering geological exploration such as finding groundwater, determining the location of hidden dangers in reservoir dam foundations and flood control embankments, and geothermal exploration.
Industry-Proven Features
Geotechnical Precision: High-resolution mapping for engineering projects and construction sites
Mineral Targeting: Advanced IP capabilities for exploration geology and resource definition
Environmental Monitoring: Sensitive detection of contaminant plumes and groundwater quality
Infrastructure Assessment: Non-destructive testing for bridge foundations and dam safety
Academic Research: Publication-quality data for scientific studies and university programs
WDJD-4 Standard Configuration List:
No. Detailed Information Quantity
1 WDJD-4 Host 1 set
2 USB Communication Cable 1 set
3 Charger 1 computer
4 12V Power Input Cable 1 computer
5 Instrument Backpack 1 computer
6 View Window Software USB Drive 1 computer
7 Operation Manual 1 computer
8 Non-polarized Electrodes 1 pair
9 Iron Electrodes 10 pieces
Application Specifications
| Industry Application | Performance Metric |
|---|---|
| Geotechnical Resolution | 0.5m target detection at 30m depth |
| Mineral Detection | 2% sulfide content identification |
| Environmental Sensitivity | 10ppm contamination threshold |
| Infrastructure Penetration | 50m through reinforced concrete |
| Research Accuracy | Peer-review ready data quality |
| Receiving part | |
| Voltage precision | ±24V, ±0.4% ±1LSB, 24 bit A/D |
| Input impedance | ≥50MΩ |
| Apparent polarizability precision | ±1% ±1LSB |
| SP compensation range | ±10V |
| Current channel | 6A, ±0.4% ±1LSB, 24 bit A/D |
| Resolution | Voltage: 0.1 micro volt, Current: 0.2 micro ampere |
| Suppression | ≥80dB for 50Hz industrial frequency(common mode interference or differential mode interference) |
| Transmitter part | |
| Maximum power | For general Res/IP sounding, 6600W. For mulit-eletrode Res imaging, 1125W, limited by WDZJ-4 switcher For Res cable, 1350W For IP cable, 2400W |
| Maximum supply voltage | For general Res/IP sounding, ±1100V(2200V peak to peak) For multi-electrode Res/IP imaging, 450V DC(limited by WDZJ-4 switcher) |
| Maximum supply current | For general Res/IP sounding, ±6A For multi-electrode Res imaging, 2.5A DC(limited by WDZJ-4 switcher) |
| Pulse width | 1~60s, duty rate 1:1 |
| Others | |
| Display | 160*160 dot matrix LCD |
| Storage | ≤1GB |
| Working temperature | -10ºC~+50ºC, 95% RH |
| Storage temperature | -20ºC~+60ºC |
| Instrument power | Internal 12V 9Ah rechargeable battery, lasts for 30 hours(or 12V external power supply) |
| Weight | ≤4.4kg |
| Dimension(L*W*H) | 270mm*246mm*175mm |
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