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Geophysical Resistivity Meter
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Developed for modern geophysical investigations, the DZD-8A Multi-Function Full Wave DC Resistivity and Induced Polarization Meter combines advanced acquisition technology with versatile field capabilities. Based on the mature DZD/DUK series architecture, the system utilizes an embedded operating platform, FPGA processing technology, and full-waveform sampling to provide accurate and consistent measurement results.
Designed as an all-in-one geophysical solution, it integrates the capabilities of a resistivity/IP meter, 2D and 3D ERT system, rock sample analyzer, and groundwater detection instrument. The platform is widely used in mineral exploration, groundwater and geothermal resource studies, engineering site investigations, and environmental surveys.
High-resolution full-waveform acquisition, reliable measurement accuracy, and intelligent data handling functions contribute to improved survey efficiency and data quality. Combined with IP67 environmental protection and multiple operational safety features, the instrument is well suited for challenging field conditions and long-term exploration projects.
| Index | DZD-8A Multi-function Full Wave DC Resistivity Meter |
|---|---|
| Receiver | Full waveform record of current and potential |
| Measuring voltage range | ±40V 32 A/D |
| Measuring voltage resolution | 5nV |
| Measuring voltage accuracy | Voltage >1mV, accuracy ≤0.1%, voltage ≤1mV, accuracy±1uV |
| Apparent polarizability accuracy | Fs. error≤±0.2% |
| Measuring current range | 0 -6000 mA(32 A/D) |
| Measuring current resolution | 10nA |
| Measuring current accuracy | When Ip≥10mA,±0.1%, when Ip<10mA,accuracy ±2uA |
| Sample frequency | 1KHz |
| Input impedance | ≥50MΩ |
| Suppression of 50Hz power frequency interference | >120dB |
| SP compensation | ±40V Full range real-time automatic tracking digital compensation |
| Transmitter | |
| Max. power supply voltage | 1400V |
| Max. power supply current | 6A |
| Max. output power | 7500 W |
| Power supply pulse width | 1-64s, Duty cycle 1:1 |
| Other parts | |
| Operating system | Embedded Linux real time system |
| Display | 6.4 inch 24 digital real color LCD, brightness 1200cd/m² |
| Data Storage | 16G-64G optional, USB2.0 transfer |
| Internal Battery | 16.8V 12.5Ah, continuously work for 20 hours |
| External Battery | 12V battery |
| Waterproof | IP67 |
| Working Temperature | -20~+60℃, 95%RH |
| Size | 300 x 225 x 132 mm |
| Weight | 5.6kg |
Integrates the capabilities of a conventional resistivity/IP meter, 2D & 3D ERT system, rock sample tester, and multi-parameter groundwater detector into a single instrument, providing a versatile solution for a wide range of geophysical surveys.
Simultaneously records transmitted current and received potential waveforms, enabling real-time interference monitoring and advanced post-processing analysis based on complete waveform data.
Supports the measurement and calculation of key geophysical parameters, including voltage, current, apparent resistivity, apparent polarizability, natural potential, metal factor, ground resistance, and IP decay curves, meeting the needs of various exploration applications.
Combining multi-stage analog and digital filtering with advanced noise suppression technology, the system achieves 1 μV repeatability and maintains reliable data quality even in areas with complex geoelectrical conditions.
Provides real-time data display, storage, and curve visualization. Data can be stored on SD cards and transferred via USB, while software upgrade functions help keep the system up to date.
Designed for demanding environments, the instrument features an IP67-rated enclosure, over-voltage protection, over-current protection, and reverse-polarity protection to ensure stable and secure operation in the field.
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