WDJD-3A Resistivity & IP Sounding Meter
Eletrical prospecting for groundwater is the most economic, effective and widely used method. WDJD-4 is a specific prospecting equipment for groundwater, with the most parameters, various functions, and the most advanced performance at present. WDJD-3A is specific instrument prospecting for groundwater, with the most parameters, various funcitons, and the most advanced performance at present.
 |
 |
| • Underground water inspection |
| • Engineering geology inspecting as dam base exploration and flood |
| • Metal source exploration |
| • Non-metal source exploration |
| • City geophysical exploration |
| • Railway and bridge |
|
• 4P-VES (sclumberger&Wenner)
|
• 3P-VES | • Dipole-dipole(VES) |
|
• 3P Composite Profiling
|
• 4P Electrical Profiling | • Mid-grandient |
| • 5P-VES | • IP-BUR | ...... |
| • Transmitting unit and receiving unit are of all-in-one design, portable and lightweight. |
| • CMOS large-scale integrated circuit, special stand-by mode, compact size, low power consumption yet multi-function; system automatically cuts off power supply if there is no operation on it in 10 minutes. |
| • High anti-interference performance and measuring precision, integrated with multistage wave filtration and signal enhancement technologies. |
| • Automatically achieving compensation of self-potential, drift and electrode polarization. |
| • Receiving unit supports transient over-voltage protection, transmitting unit supports over-voltage protection, over-current protection and AB open-circuit protection. |
| • Measured curve can be plotted on the display directly and clearly. |
| • Large display screen, English edition keypad and menu, flexible for operation. |
| • Setting working period freely, 10 kinds of common array configurations are available; electrode distance is inputted and array factor could be calculated automatically. |
| • Electrode distance table: memorizing 100 different groups of distances among the electrodes, avoiding repetitive input; input number can call the electrode distances to function or to reset. |
| • Earth resistance inspection: Earth condition of the electrodes can be inspected at any time. |
| • Mass data storage: able to memorize maximum 3500 readings of survey points. |
| • All parameter and data are under power-failure protection; and thus data will not loss when system shutdown or changing battery. |
| • Diagnostic program finds fault or failure and damaged parts quickly and accurately. |
| • Sealed constitution: feature waterproof and dustproof design, long lifetime. |
 |
 |
|
| Receiving | |
| Voltage channel | ± 6V, ±1 % ± 1LSB |
|
Input impedance
|
>50MΩ |
| Apparent polarizability precision | ±1% ± 1LSB |
| SP compensation range | ±1V |
| Current channel | 6A, 24 bit A/D |
| Suppression | suppression is over 80dB for 50Hz industrial frequency (common mode interference or differential mode interference) |
|
Transmitting |
|
| Maximum transmitting power | 4500W |
|
Maximum voltage range
|
±900V |
| Maximum current range | 5A |
| Voltage channel | ±24A, 24 bit A/D |
| Input resistance | ≥50ＭΩ |
|
Others |
|
| Working temperature | -10℃~+50℃, 95 %RH |
|
Storage temperature
|
-20℃~+60℃ |
|
Instrument power
|
eight size-D dry cells |
|
Overall current
|
≤ 55mA |
|
Weight
|
≤ 7Kg |
| Dimension (L×W×H) | 310mm * 210mm * 210mm |
ENGLISH
Chinese
Russian
