Chongqing Gold Mechanical & Electrical Equipment Co.,Ltd
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ERT Survey Electrical Imaging Geophysical Resistivity Meters For Groundwater
Introduction:
One of great advantage of electrical resistivity imaging, is that it can be used to image geologic features from tens of feet to several hundred feet in depth, and still maintain excellent resolution, also has an advantage of having a wide range of resistivity values.
Application:
Hydrogeologic assessments using geophysical resistivity meter. Some examples of groundwater problems include aquifer characterization, groundwater exploration, basin delineation, fracture mapping, karst investigations, aquifer storage and recovery monitoring, plume delineation, and investigating groundwater/surface water interactions
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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 |