High-density electrical method belongs to the category of direct current electrical method, which can observe apparent resistivity and apparent polarizability and other parameters and form 2D/3D apparent resistivity/apparent polarizability section. It has the characteristics of large data acquisition density, high observation accuracy and high construction efficiency, and can directly and accurately reflect the distribution pattern of electrical anomalies of underground targets.

 

High-density electrical method can be widely used in karst, ore-body goaf, archaeology, civil air defense engineering investigation; Investigation of geological disasters such as hidden troubles of dikes and landslides; Highway, railway, bridge, structure foundation and other site evaluation; Exploration of metallic and non-metallic mineral resources; Groundwater level detection and water resources exploration.

• Compact and robust main engine and cable system;
 

• Host of measurement and control system -- DZD-8 multifunctional full waveform DC meter;
 

• Distributed or array measurement, which can connect up to 254*10 electrodes for distributed measurement and 254*60 electrodes for centralized measurement, meeting the needs of long profile, large depth and 3d high-density exploration;
 

• Unique power supply technology, 300 electrodes without relay;

 

• Custom pole running file, in addition to the standard high-density device form, can also be customized according to the actual needs of the pole running mode;

 

• Intelligent rolling measurement, can make the section of infinite continuity, also can arbitrarily choose the starting point and retest point;

 

• Perfect measurement control process, with grounding resistance detection, electrode potential over limit self-extension measurement and automatic gain functions, to ensure that high quality of original data can be obtained under extremely strong background noise;

 

• Real-time monitoring, real-time display of apparent resistivity/apparent polarizability pseudo-section chromatogram apparent resistivity/apparent polarizability, primary field potential and other measured real values during the test process, you can view the measured real value profile curve;

• Full waveform recording of current and potential;

 

• Measuring voltage range: ±40V (32 bit A/D);

 

• Measurement voltage resolution: 5nV;

 

• Measuring voltage accuracy: voltage > 3mV accuracy ≤0.1%, voltage ≤3mV accuracy ±1uV;

 

• Apparent polarizability measurement accuracy: relative error ≤±0.2%;

 

• Current measurement range: 0-6000 mA (32 bit A/D);

 

• Measurement current resolution: 10nA;

 

• Measuring current accuracy: ±0.1% when Ip≥10mA;

 

• Input impedance: ≥50M ω;

 

• Input protection voltage: 1000V;

 

• Suppression of 50Hz power frequency interference: > 120dB;

 

•SP compensation: ±40V full range real-time automatic tracking digital compensation.

• Supply voltage: ≤1400V;

 

• Power supply current: ≤6A;

 

• Output power: ≤7500 W;

 

• Supply time: 1-64s;

 

• Stop time: 1-64s;

 

• Over-voltage and over-current protection;

• Processor: ARM Cortex-A8 processor;

 

• Operating system: Embedded Linux real-time system;

 

• Display: 6.4 inch 24-bit true color LCD;

 

• Liquid crystal brightness: 1200cd/m2, sunlight visible;

 

• Storage capacity: 16G-128G Optional;

 

• Data transmission: USB2.0 high-speed transmission;

 

• Battery capacity: 16.8V 12.5h, can work continuously for 16 hours;

 

• Power interface: external 12V battery or adapter;

 

• Waterproof grade: IP66;

 

• Operating temperature: -10-+50℃;

 

• Dimensions: 300 x 225 x 132 mm;

 

• Weight: 5.6kg

• Number of electrode case: 10 channels/string (5-256 channels/string, can be customized);

 

• Track spacing: 5 and 10 meters (1-20 meters, can be customized);

 

• Power supply: 1000V/4A;

 

• Power supply internal resistance: 50 ω /km;

 

• Cable diameter: 6mm;

 

• Cable weight: 4kg (10 channels/string, 10m/channel);

 

• Tensile strength: 2000kN;

 

• Insulation strength: ≥1000M ω /1000V between power supply lines A and B and between low voltage lines;

 

• Waterproof grade: IP67 (waterproof, dustproof, rain proof);

 

• Electrode box size: φ 17mm*62mm(electric extreme), φ 24mm*158mm;

 

• Compressive strength of electrode box: 50Kg/cm2;

 

• Switch life: 100,000 times;

 

• Power consumption of electrode box: 18mW;

 

• Encoding mode: automatic encoding;

 

• Cascade mode: any cable combination;

 

• Transceiver electrode: automatic separation/closure (automatic selection of resistivity and polarization);

 

• Operating temperature: -20℃ ~ +60℃;

• Converter: 60 channels/set;

 

• Power supply: 800V/4A;

 

• Encoding mode: automatic encoding;

 

• Cascade mode: can be cascaded arbitrarily through a multi-channel electrode converter;

 

• Operating temperature: -20℃ ~ +60℃;

 

• Volume: 27×24.6×12.4cm;

 

• Weight: 2.6kg;

• Number of cable electrodes: 30 / piece;

 

• Electrode spacing: 5m/10m spacing (customizable);

 

• Insulation strength: ≥500M ω /1000V between A and B power supply lines and between them and low-voltage lines;

 

• Waterproof grade: IP67 (waterproof, dustproof, rain proof);

 

• Cable material: polyurethane skin;

 

• cable outer diameter: 7mm;

• Converter: 10 channels/unit;

 

• Power supply: 800V/4A;

 

• Encoding mode: automatic encoding;

 

• Cascade mode: can be cascaded arbitrarily through a multi-channel electrode converter;

 

• Operating temperature: -20℃ ~ +60℃;

 

• Volume: φ 46mm*218mm;

 

• Weight: 0.4kg;

 

• Number of cable electrodes: 10 / piece;

 

• Electrode spacing: 5m/10m spacing (customizable);

 

• Insulation strength: ≥500M ω /1000V between A and B power supply lines and between them and low-voltage lines;

 

• Waterproof grade: IP67 (waterproof, dustproof, rain proof);

 

• Cable material: polyurethane skin;

 

• cable outer diameter: 7mm;

The system uses a multifunctional full-waveform DC meter as the measurement and control host. Distributed high-density cables and electrodes can be used to measure distributed two-dimensional and three-dimensional high-density resistivity and IP.

 

Array centralized multichannel electrode converter, centralized high density cable, electrode can also be selected to achieve centralized two-dimensional and three-dimensional high density resistivity and IP measurement.