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Pollution plume mapping machine geology prospecting machine
Geophysical methods such as resistivity can effectively be used to map and characterize groundwater flow and to allow for the optimum positioning of groundwater exploration and monitoring boreholes. Geological structures such as dykes are important in terms of groundwater flow and can be mapped using a combination of magnetic, electromagnetic and resistivity surveys
Main Features.
Assembly data acquisition devices and multiplexer together in the same case,which not only reduce the volume but also decrease the weight, thus avoid errors caused by operating the devices separately and due to inconformity of switch parameter settings.
Maintain all functions ofDUK2A MultiElectrodes Resistivity Survey System and conventional electrical method. Add high and low current transform taps, add high and low input impedance transformation tap, and improve the acquisition capability of weak signals.
Add storage and output functions for compensation SP voltage value.
Adopt 16-bit A/D and 16-bit D/A, thus improve the discernibility for measurement of collected data.
Add the function for automatically detect grounding resistance before each measurement; give directions for the points exceed the grounding resistance value, for automatically proceeding with further measurement if required; the value at such point can be replaced with a fixed symbol to facilitate the elimination of this point while processing the information and data.
Greatly enhance the repeatability of measured data.
Technical Specifications
Measuring unit ( DZD-6A)
- Maximum Measuring Voltage: -6000mV~+6000mV
- Measuring Voltage Resolution: 0.01 mV
- Measuring Voltage Accuracy: (at Vp>10mV)±5%, ±1 digit; (at Vp<10mV)±1%, ±1 digit
- Suppression on 50Hz Power Frequency: 80dB
- Measuring Current: 0~5000 mA
- Measuring Current Resolution: 0.01 mA
- Measuring Current Accuracy: (at Ip>10mA)±5%, ±1 digit; (at Ip<10mA) ±1% ±Letter
- Input Impedance ≥50 MΩ
- Measured Apparent Polarizability Accuracy: ±1%, ±1 digit
- Maximum Power Supply Voltage 900V
- Maximum Power Supply Current: 5A
- Power Supply Pulse Width: 1~60 sec.
- Weight: 8 kg
- Volume: 305×200×202mm
DUK-2A Multiplex Electrode Converter
- Conversion Electrodes: 60 channels or 120 channels
- Sopported manual configuration: Wenner, Schlumberger 1, Schlumberger 2, Dipole-Dipole, Combined Profiles, Differential, Pole-Pole, Triple-Pole Rolling,
- Operating Mode: 16-key keypad with 90 character LCD display combines to form man-machine dialogue operation.
- Maximum Allowable Current: 2A
- Maximum Withstand Voltage: 500V DC
- Insulating Property: 500MΩ
- Electroshock Break-over Resistance: smaller than 0.1Ω
- Power Consumption: 50 mA (Standby)
- Power Supply: 1# Dry Cell (or rechargeable battery with the same specification) 8 pcs.
- Working Temperature: -10°C~ +50°C, 95%Rh
- Weight: 7 kg (60 channels), 7.5kg (120 channels)
- Volume: 305×200×202mm (60 channels), 324×200×245mm (120 channels
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