China 2D Electric Resistivity Survey Tomography Electrical Resistivity Imaging Geophysics Resistivity Meter for Undergound Water Detection Exploration

2D Electric Resistivity Tomography, Electrical Resistivity Imaging, Geophysics Resistivity meter for Undergound water detection exploration
Specifications
1. Geophysical Equipment
2. Method: Resistivity Survey System
3. Feature: 60 electrode or 120 electrode
4.10m space cable
Main Applications
1 Widely used for high-resolution research, tomography and monitoring applications.
2 Coal mining gobs, caves of Custer area, geological disasters survey like landslides other geological disasters.
3 High resolution engineering geological exploration like factory foundations, highways, bridges, railways, civil engineering, hydrology, engineering, environmental.
4 For landslides and other geological disaster exploration.
5 metal and non-metallic mineral resources exploration and geothermal exploration
Main Features.
1 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.
2 Maintain all functions of DUK-2A Multi-Electrodes Resistivity Survey System and conventional electrical method.
3 Add high and low current transform taps, add high and low input impedance transformation tap, and improve the acquisition capability of weak signals.
4 Add storage and output functions for compensation SP voltage value.
5 Adopt 16-bit A/D and 16-bit D/A, thus improve the discernibility for measurement of collected data.
6 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.
7 Greatly enhance the repeatability of measured data.
Technical Specifications
Measuring unit ( DZD-6A)
1 Maximum Measuring Voltage: -6000mV~+6000mV
2 Measuring Voltage Resolution: 0.01 mV
3 Measuring Voltage Accuracy: (at Vp>10mV)± 5%, ± 1 digit; (at Vp<10mV)± 1%, ± 1 digit
4 Suppression on 50Hz Power Frequency: 80dB
5 Measuring Current: 0~5000 mA
6 Measuring Current Resolution: 0.01 mA
7 Measuring Current Accuracy: (at Ip>10mA)± 5%, ± 1 digit; (at Ip<10mA) ± 1% ± Letter
8 Input Impedance ≥ 50 MΩ
9 Measured Apparent Polarizability Accuracy: ± 1%, ± 1 digit
10 Maximum Power Supply Voltage 900V
11 Maximum Power Supply Current: 5A
12 Power Supply Pulse Width: 1~60 sec.
13 Weight: 8 kg
14 Volume: 305x 200x 202mm
DUK-2A Multiplex Electrode Converter
1 Conversion Electrodes: 60 channels or 120 channels
2 Sopported manual configuration: Wenner, Schlumberger 1, Schlumberger 2, Dipole-Dipole, Combined Profiles, Differential, Pole-Pole, Triple-Pole Rolling,
3 Operating Mode: 16-key keypad with 90 character LCD display combines to form man-machine dialogue operation.
4 Maximum Allowable Current: 2A
5 Maximum Withstand Voltage: 500V DC
6 Insulating Property: 500MΩ
7 Electroshock Break-over Resistance: Smaller than 0.1Ω
8 Power Consumption: 50 mA (Standby)
9 Power Supply: 1# Dry Cell (or rechargeable battery with the same specification) 8 pcs.
10 Working Temperature: -10° C~ +50° C, 95%Rh
11 Weight: 7 kg (60 channels), 7.5kg (120 channels)
12 Volume: 305x 200x 202mm (60 channels), 324x 200x 245mm (120 channels

Model & Name:

DZD-6A 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:

305x200x202m

2.DUK-2A Multiplex Electrode Converter

Model & Name:

DUK-2A Multi-electrode Converter

Conversion Electrodes :

60 channels or 120 channels

Supported manual configuration :

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) 8pcs.

Weight :

7 kg (60 channels), 7.5kg (120 channels)

Operating Temperature:

-10 °C ~50 °C , 95%Rh

Size:

305x200x202mm (60 channels)
324x200x245mm (120 channels)