WDZS-4 Resistivity & IP Meter
Eletrical prospecting for groundwater is the most economic, effective and widely used method. WDZS-4 is a specific prospecting equipment for groundwater, with the most parameters, various functions, and the most advanced performance at present. WDZS-4 is specific instrument prospecting for groundwater, with the most parameters, various funcitons, and the most advanced performance at present.
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| • 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 |
| • 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 2200 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 |
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Input impedance
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>50MΩ |
| Apparent polarizability precision | ±1% ± 1LSB |
| SP compensation range | ±1V |
| Current channel | 5A, ±1% ± 1 LSB |
| Suppression | suppression is over 80dB for 50Hz industrial frequency (common mode interference or differential mode interference) |
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Transmitting |
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| Maximum transmitting power | 4500W |
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Maximum voltage range
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900V |
| Maximum current range | 5A |
| Pulse width | 1~60s, duty ratio 1:1 |
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Others |
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| Working temperature | -10℃~+50℃, 95 %RH |
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Storage temperature
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-20℃~+60℃ |
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Instrument power
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8 D-size batteries (or nickel-cadmium battery of the same specs) |
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Overall current
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≤ 55mA |
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Weight
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≤ 7 Kg |
| Dimension (L×W×H) | 310mm X 210mm X 210mm |
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