Geophysical Exploration Equipment, description about 2D Geophysical Resistivity Meter and Geophysical Equipment on China Suppliers Mobile

Product Details

2D Geophysical Resistivity Meter and Geophysical Equipment

Instroduction

2D Geophysical Resistivity Meter and Geophysical Equipment is the updated model of WDJD-3 multi-function digital DC Res/IP terrameter, which install a 12V rechargeable battery.

It features multiple functions, high accuracy, fast speed, high reliability and excellent expandability. Measured data of WDJD-4 can be processed by other multi-electrode resistivity software, which makes the interpretation more convenient.

Applications

• Metal and nonmetal mineral resources detection
• City geophysical exploration, railway and bridge inspection

• Hydrology and engineering geology as seeking for ground water, inspecting dam base and flood protection levee for incipient faults

• Geothermal prospecting

Functions

• 1D resistivity sounding

• 1D induced polarization sounding

• 2D Resistivity imaging

Features

• Transmitting unit and receiving unit are of all-in-one design, portable and lightweight.

• Super high-power, high anti-interference performance and precision: up to 6600w (1100v×6A) power, 48Vp-p voltage range ensures to get a good result in a area with high resistance.

• Automatically achieving compensation of self-potential, drift and electrode polarization, up to ±10V.

• Receiving unit support transient over-voltage protection, transmitting unit supports over-voltage

protection, over-current protection and AB open-circuit protection.

• For general resistivity and IP survey function, 9 types of electrode arrays are available. Electrode distanc ( namely “Program”) can be inputted or called. Geometric factor K can also be generated automatically or

calculated manually. For multi-electrode 2D resistivity imaging, up to 18 electrode arrays are available. It could scanning measure according to fixed section (including AMNB, ABMN, AMBN, AMN, MNB, A-MN-B, Sp M, Sp MN, charge M, charge MN) or continuous rolling scanning measure according to variable section

(including A-M, A-MN, AB-M, AB-MN, MN-B, A-MN rectangle).

• Program: the program can memorize 100 groups of electrode distances, avoiding repetitive input. Or you

just input a program Id and step to call the corresponding electrode distances.

• Earth resistance inspection: ground condition can be inspected at any time.

• Mass data storage: Up to 1GB capacity (extended) enable store 5,000,000 groups measuring data

(including current, voltage, SP, Ro, Ms, metal factor, TH, R, J).

• All parameter and data are under power-failure protection; and thus data will not be lost even thought

the system shuts down accidentally.

• USB port enables it to transfer data to computer.

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	500V_DC
Max working current	2.5A_DC
Power supply	Internal 7.4V 4AH rechargeable lithium battery, last for continuously 25 hours work
Working temperature	-10°C~+50°C