2D Multi-electrode Electrical Resistivity Tomography ERT Geophysical Survey Equipment IP Survey Instrument
Product Description
Electrical Resistivity Tomography Survey refers to the DC high density resistivity method, but because of the development of dc excitation polarization method, so referred to as the electrical resistivity tomography method. The resistivity tomography method is actually a method of array exploration. In field measurement, only all electrodes (dozens to hundreds) are placed on the measuring point, and then data acquisition can be realized quickly and automatically by using program-controlled electrode switch and microcomputer engineering electrical measuring instrument. After the measurement results are sent into the computer, the data can be processed and the results of physical interpretation of geoelectric cross section distribution can be given. Obviously, the application and development of high-density resistivity exploration technology has greatly advanced the intellectualization degree of electrical exploration.
Main Characteristic of 2D Multi-electrode Electrical Resistivity Tomography ERT Geophysical Survey Equipment IP Survey Instrument
1. By utilizing the apparent resistivity parameters, it is widely used in hydrology, environmental protection, engineering geophysical exploration, metal and non-metal mineral resources exploration.
2. Easily can observe the apparent resistivity and apparent polarizability at the same time.
3. Measurement and control host can work standalone and it has all the functions of multi-functional direct current instrument.
System components of 2D Multi-electrode Electrical Resistivity Tomography ERT Geophysical Survey Equipment IP Survey Instrument
1. Measurement and control host (multi-functional direct current instrument);
2. 60-channel or 120-channel multiplex electrode switch;
3. Cables, electrodes and other related accessories.
Specifications of 2D Multi-electrode Electrical Resistivity Tomography ERT Geophysical Survey Equipment IP Survey Instrument
| Transmitting |
| Maximum power |
9000W(VES),2400W(Imaging) |
| Maximum voltage |
1500V(VES),2400 peak-to-peak; 800V(Imaging), 1600 peak-to-peak |
| Maximum current |
6A(VES), 3A(Imaging) |
| Power supply pulse width |
1~60s, duty cycle is 1:1 |
| Receiving |
| Voltage |
± 80V (24 bit A/D) |
| Vp accuracy(before stacking) |
If Vp≥5mV, ±0.2% ±1LSB. If 0.1mV≤ Vp<5mV, ±1%±1LSB. |
| Current |
6A (24bit A/D) |
| Ip accuracy(before stacking) |
If Ip≥ 5mA, ± 0.2% ±1LSB;If 0.1mA≤ Ip<5mA, then ± 1% ±1LSB.. |
| Apparent Polarizability Accuracy |
±1% ±1LSB |
| Suppression |
≥80dB, for 50Hz or 60Hz (industrial frequency interference) either in common mode or differential mode interference |
| Input impedance |
>100MΩ |
| SP compensation range |
± 10V |
| Other |
| Tablet PC |
Windows 10 64bit system, Intel Core M Processor, 4GB RAM, 64GB capacity |
| Physical Interface |
DC Input, A/B/Dipole-pole/M/N, Recharging port, 2 Multi-electrode Socket, RS-232, Bluetooth |
| Working temperature |
-10°C ~+50°C , 95%RH |
| Storage temperature |
-20°C ~+60°C, 95%RH |
| Power supply |
built-in 7.4V, 4Ah battery (or alternative of 12V external power supply) lasts continuously for 20 hours |
| Main unit ports support |
A, B, M, N, ports for DC high voltage, ports for external battery or recharge, 2 cable ports, RS-232, Bluetooth |
| Weight |
4kg(WDA-1); 6kg(WDA-1B) |
| Dimension |
270mmx246mmx123mm(WDA-1);340mmx295mmx152mm(WDA-1B) |
| Shield Case |
Ip67, 81-41/STANAG 4280 |
Audited Supplier 
Main Characteristic of 2D Multi-electrode Electrical Resistivity Tomography ERT Geophysical Survey Equipment IP Survey Instrument
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