Mutil Electrode Geo Resistivity Test / Electrical Resistivity Imaging System
Geo Resistivity Test Mutil Electrode Electrical Resistivity Imaging System
Electrical Resistivity Imaging System(also named2D ERT) is a non-invasive geophysical method of primary interest for addressing subsurface engineering problems. The method is based on the assumption that subsurface geological materials have significant resistivity contrasts that can be identified based on measurements on the surface. The 2D ERT survey method has been shown to be useful as a cost-effective and rapid method to obtain wide area subsurface information that is relevant for subsurface engineering problems.
The electrical resistivity imaging system is one of the most widely used near-surface geophysical survey methods for civil engineering applications. For identification of bedrock structures cavities or sinkholes geotechnical site investigation slope stability investigation and unknown bridge foundation determination , also The electrical resistivity imaging system may be used for various other purposes in subsurface engineering investigations,Including investigating the subsurface geology of a building construction site, determining the depth of an unknown bridge foundation, and determining seepage from the earthen embankments of a wastewater treatment pond system.
Please see as following details about our electrical resistivity imaging system :
Technical specification
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Receiving part
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Voltage channel:
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±6V |
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Measurement accuracy:
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Vp≥10mV时,±0.5% ±1 character Vp< 10mV时,±1% ±1 character |
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Input resistance:
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> 50 MΩ |
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Apparent polarizability measurement accuracy:
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±1% ±1character |
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Sp compensation range:
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±1V . |
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Current channel:
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5A |
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Measurement accuracy:
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Ip≥ 10mA时,±0.5% ±1character Ip< 10mA时,±1% ±1character |
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The suppression of 50Hz power frequency interference (common mode interference and differential mode interference) is better than 80dB
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Launch part
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Maximum transmit power:
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4500W |
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Maximum supply voltage:
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±900V |
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Maximum supply current:
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±5A |
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Power supply pulse width:
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1~60 seconds, the duty ratio is 1:1
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| Other | |
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Operating temperature:
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-10°C~ +50°C, 95%RH |
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Storage temperature:
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-20°C~ +60°C |
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Instrument power supply:
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No. 1 battery (or nickel-cadmium battery of the same specification) 8 pieces
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Current current:
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≤55mA |
| Weight: | ≤7KG |
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Volume:
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310mm*210mm*210mm |
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WDZJ-3 multi-channel electrode converter
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Converting the number of electrodes:
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60 road
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Insulation properties:
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≥500 MΩ |
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Maximum working voltage:
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450 VDC |
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Maximum operating current:
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2.5 ADC |
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Instrument power supply:
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No. 1 battery (or nickel-cadmium battery with the same specification) 8 pieces
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Operating temperature:
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-10°C~ +50°C |
Certificate
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