Geo Resistivity Equipment Terrameter VES Resistivity And IP Surveying Geophysical Resistivity Equipment For Groundwater
Electrical exploration methods may be subdivided into two main groups. One group is concerned with measurement of resistivity, or conductivity, of rocks; the other group is concerned with measurement of their capacitance. The galvanic, induction, magneto-telluric, and telluric methods belong to the first group, and the induced polarization methods belong to the second group.
All resistivity methods can be applied for studying variations of resistivity with depth (depth sounding methods) or for studying lateral changes in resistivity (horizontal profiling methods). The vertical electrical resistivity sounding methods (VES) are depth sounding galvanic methods
Main Characteristic:
Geoelectrical investigations were carried out usually to delineate geology. Geoelectrical resistivity techniques have been extensively used in groundwater investigations all over the world. However, in recent times these studies are also being used to alleviate groundwater quality.The literature available on electrical resistivity prospecting has been described by several authors . The electrical resistivity method can be best employed to estimate the thickness of overburden and also the thickness of weathered/fractured zones with reasonable accuracy. Though both Wenner and Schlumberger electrode configuration methods are popularly employed, the Schlumberger electrode configuration method is more suited to the study area, ensuring better results. The method has practical, operational and interpretational advantages over other methods such as the Wenner method of electrode arrangement
System components:
1. Measurement and control host (WDJD multi-functional direct current instrument);
2. WJDZ type 60-channel or 120-channel multiplex electrode switch;
3. Cables, electrodes and other related accessories
| Model & Name: |
WDJD Multi-functional Direct Current ( Induced polarization ) Instrument |
| Max. Power Supply Voltage: |
900V |
| Max. Power Supply Current: |
5A |
| Voltage Measuring Range: |
±6000mV |
| Voltage Measuring Accuracy: |
(Vp>10mV) ±5%, ±1 digit; (Vp<10mV) ±1%, ±1 digit |
| Current Measuring Range: |
0.1mA~3000mA |
| Current Measuring Accuracy: |
Ip>10mA) ±5%, ±1 digit; (Ip<10mA) ±1%, ± digit |
| Interference Suppression on 50Hz Power Frequency |
Better than 80dB |
| SP Compensation Range: |
-1000mV~+1000mV |
| Instrument Input Impedance: |
≥50MΩ |
| Operating Temperature: |
-10 °C ~50 °C , 95%Rh |
| Machine Size: |
305×200×202mm |
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