Chongqing Gold Mechanical & Electrical Equipment Co.,Ltd
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Electrical Geophysical Exploration Instrument for Resistivity Tomography
Introduction
Multi-electrode electrical resistivity tomography method is actually a combination of electrical profile method and electrical sounding method. Its principle is the same as that of ordinary resistivity method. The difference is that high-density observation points are set in the observation, which is a kind of array exploration method. In field measurement, only all electrodes (dozens to hundreds) are placed on the measuring point, and then the data can be quickly and automatically collected by using the programmed electrode transfer switch and the microcomputer engineering electrical measuring instrument. After the measurement results are sent to the microcomputer, the data can be processed and the results of various physical interpretations of geoelectric section distribution can be given. Obviously, the application and development of high density resistivity exploration technology has greatly advanced the intellectualization of electrical exploration.
The host machine WDJD-3A can do both electrical profile measurement and electrical sounding measurement. When only with WDJD-3A, it does electrical sounding. When works with WDZJ-4 or WDZJ-120 multi-electrodes converter, it do electrical profile.
Processing Software
Data reception and format conversion
General data editing plotting
Automatic interpretation of electric sounding
High density chromatographic image processing
Contour line and two-dimensional surface drawing
Technical specification
| Receiving part
| |
| Voltage channel:
| ±6V |
| Measurement accuracy:
| Vp≥10mV时,±0.5% ±1 character Vp< 10mV时,±1% ±1 character |
| Input resistance:
| > 50 MΩ |
| Apparent polarizability measurement accuracy:
| ±1% ±1character |
| Sp compensation range:
| ±1V . |
| Current channel:
| 5A |
| Measurement accuracy:
| Ip≥ 10mA时,±0.5% ±1character Ip< 10mA时,±1% ±1character |
| The suppression of 50Hz power frequency interference (common mode interference and differential mode interference) is better than 80dB
| |
| Launch part
| |
| Maximum transmit power:
| 4500W |
| Maximum supply voltage:
| ±900V |
| Maximum supply current:
| ±5A |
| Power supply pulse width:
| 1~60 seconds, the duty ratio is 1:1
|
| Other | |
| Operating temperature:
| -10°C~ +50°C, 95%RH |
| Storage temperature:
| -20°C~ +60°C |
| Instrument power supply:
| No. 1 battery (or nickel-cadmium battery of the same specification) 8 pieces
|
| Current current:
| ≤55mA |
| Weight: | ≤7KG |
| Volume:
| 310mm*210mm*210mm |
| WDZJ-3 multi-channel electrode converter
| |
| Converting the number of electrodes:
| 60 road
|
| Insulation properties:
| ≥500 MΩ |
| Maximum working voltage:
| 450 VDC |
| Maximum operating current:
| 2.5 ADC |
| Instrument power supply:
| No. 1 battery (or nickel-cadmium battery with the same specification) 8 pieces
|
| Operating temperature:
| -10°C~ +50°C |
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