High Accuracy Geophysical Electrical Resistivity Tomography Instrument Ert Eri Survey System Underground 2D Resistivity Imaging Equipment For Water Detection
Making it economically possible to acquire the dense data sets needed to use electrical resistance tomography (ERT) for shallow-surface applications
Multi-electrode Resistivity instrument which includes transmitter, receiver and switching unit connected to current and measuring lines in a single heavy duty cable with waterproof enclosure
System Composition
DAZ-6A multi-functional DC resistivity instrument as the survey and control unit in the system
DUK-2A type 60-channel or 120-channel multiplex electrode switch
cables, electrodes and other related accessories, forming resistivity imaging system
Model & Name: |
Multi-functional Direct Current ( Induced polarization ) Instrument |
Max. Power Supply Voltage: |
900V |
Max. Power Supply Current: |
5A |
Voltage Measuring Range: |
±6000mV |
Voltage Measuring Accuracy: |
(Vp>10mV) ±5%, ±1 digit; (Vp<10mV) ±1%, ±1 digit |
Current Measuring Range: |
0~5000mA |
Measuring Current Resolution: |
0.01mA |
Current Measuring Accuracy: |
Ip>10mA) ±5%, ±1 digit; (Ip<10mA) ±1%, ± 1 digit |
Interference Suppression on 50Hz Power Frequency |
Better than 80dB |
Measured Apparent Polarizability Accuracy : |
±1%, ±1 digit |
Instrument Input Impedance: |
≥50MΩ |
Power Supply Pulse Width: |
1~60s |
Operating Temperature: |
-10 °C ~50 °C , 95%Rh |
Size: |
305×200×202m |
The high-density electrical method is an array exploration method of the DC resistivity method. It has the characteristics of both electrical sounding and electrical profile. The measurement result is a two-dimensional apparent resistivity section. It has the advantages of running pole, large amount of collected data, high work efficiency, and can intuitively and accurately reflect the characteristics of electrical abnormality in underground space.
Compact and robust host and cable system;
The host of the measurement and control system with excellent performance - DZD-8 multifunctional full-waveform direct current method;
Using distributed or array measurement, up to 254*10 electrodes can be connected to distributed measurement, and 254*60 electrodes can be connected to centralized measurement to meet the needs of long profile, large depth and three-dimensional high-density exploration;
Unique power technology, 300 electrodes without relay;
Customized running pole file, in addition to the standard high-density device form, you can also customize the running pole method according to actual needs;
The intelligent rolling measurement can make the section continue infinitely, and the starting point and the re-measurement point can also be selected arbitrarily;
Perfect measurement control process, with grounding resistance detection, electrode potential over-limit self-delay measurement and automatic gain functions, to ensure that high-quality original data can still 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, you can view the real-valued profile curves of each measurement;
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