Chongqing Gold Mechanical & Electrical Equipment Co.,Ltd
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Resisitvity Tomography Geophysical Exploration Instrument ERT Survey
Main Functions
The resistivity tomography geophysical exploration instrument can solve the underground geological problems by observing and studying the distribution law of the artificially established underground stable current field. It has the characteristics of intuitive, efficient, high resolution and high precision. The electrical properties of underground media are studied by the changes of the artificial stable current field established by ground observation, and the buried depth, properties and shapes of underground obstacles are determined by analysis.
Electrode arrangement
Up to 18 types of devices are extensible. It can be scanned according to fixed section (electrode arrangement is AMNB, ABMN, AMBN, AMN, MNB, A-Mn-B, self-charged M, self-charged MN, charging M, charging MN) and continuous rolling scanning measurement according to variable section (electrode arrangement is A-M, A-MN, AB-M, AB) -MN, MN-B, A-MN rectangle, A-Mn-B, cross-hole dipole), among which, continuous rolling scanning measurement can allow the measurement section to be connected to any length under the condition that the total number of electrodes is unchanged, which is convenient for long section tracking, enabling users to solve practical problems at low cost and high time.
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 |
