Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.: Chongqing, China; Main products: Geophysical Exploration, Seismic Equipment, Well Logging System, Gyroscopic Inclinometer, Underground Detector

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Tunnel Site Investigation Using Resistivity Imaging

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Product Details

Place of Origin	Chongqing, China		Brand Name	GOLD
Model Number	DUK-2A 2D Resistivity Imaging System for Dam Investigation

Tunnel Site Investigation Using Resistivity Imaging

Applications

Electrical imaging Applications:

detailed investigations at small depth for the identification of areas where pollutants are diffused
archaeological explorations
paedological prospecting
monitoring of areas intended for dumping use
grounding control
studies of salt water contamination in fresh water layers

Functions

• 1D resistivity sounding

• 1D induced polarization sounding

• 2D Resistivity imaging

Features

Electrical Imaging System main features:

automatic gain settings (autoranging)
automatic suppression of self potentials
automatic test procedure for link-boxes operating ability, the correct connection of electrodes and diagnostics
management of energy and polarization reversal from the central unit
design of energetic wave
display of GTDT (Ground Time Domain Test) for a correct programming of energetic wave
ROLL-ALONG for continuo profiling (with a min. of 32 electrodes)
Linera and logarithmic PSEUDOSECTION display
data download to PC via USB

Specifications

WDJD-4 Res/IP Meter
Receiving
Voltage precision	If Vp≥10mV, ± 5‰ ± 1LSB; if Vp < 10mV, ±1% ± 1LSB.
Input impedance	≥50MΩ
Apparent polarizability precision	±1% ± 1LSB
SP compensation range	±10V
Current channel	6 A, ±0.4% ± 1LSB, 24 bit A/D
Current precision	If Ip≥ 10mA, ± 5‰ ± 1 LSB; if Ip < 10 mA, ±1% ± 1 LSB.
Suppression	≥80dB for 50Hz industrial frequency (common mode interference or differential mode interference).
Transmitting
Max transmitting power	For general Res/IP sounding, 6600W. For multi-electrode Res imaging, 1125W, limited by WDZJ-4 switcher For Res cable, 1350W For IP cable, 2400W
Max voltage	For general Res/IP sounding, ±1100V (2200V peak to peak) For multi-electrode Res imaging, 450V DC (limited by WDZJ-4 switcher)
Max current	For general Res/IP sounding, ±6A For multi-electrode Res imaging, 2.5A DC (limited by WDZJ-4 switcher
Pulse width	1~60s, duty ratio 1:1
Others
Display	160 × 160 dot matrix LCD
Storage	≤1GB
Working temperature	-10℃~+50℃, 95 %RH
Storage temperature	-20℃~+60℃
Instrument power	internal 12V 9Ah rechargeable battery , lasts for 30 hours (or 12V external power supply)
Weight	≤ 4.4 Kg
Dimension (L×W×H)	270mm X 246mm X 175mm

	WDZJ-4 Switcher
Max electrode connected	60 and 120 (for option)
Insulation impedance	≥500MΩ
Max working voltage	500VDC
Max working current	2.5ADC
Power supply	Internal 7.4V 4AH rechargeable lithium battery, last for continuously 25 hours work
Working temperature	-10°C~+50°C

Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.: Contact nameMichelle Li
Chat Now; Phone86-23-62794421; AddressNo. 9-10, Jintai Mansion, 23 Nanping West Road

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