multi-electrode resistivity surveying system
ADD: NO.1 Kuaileli, Xiaolongkan Street, Shapingba District, Chongqing China;
Skype: lucyfang9 ; Website: www.lucydrillingrig.com, email: lucyfang16@yahoo.com;
M: +86-13628481197 TEL.:+86-15923510719,15111813754 FAX:0086-23-65311383
Applications:
Multi-electrode resistivity method receives more and more attention by research institutes and colleges in China due to its special action in the fine exploration. Much research has been done these years, and it is becoming perfect.
According to the needs of users, our institute develops WGMD-3 multi-electrode resistivity measurement system by taking the WDJD-3 mutil-function digital DC induced polarization resistivity instrument as the control part, WDZJ-3 as multiplex electrode converter. Further more, we cooperated with other institutes and developed the BT-WYS electric Processing Specific Program that makes the interpretation more and more convenient and visual.
The instrument can be widely applied in metal and nonmetal mineral resources detection, city geophysical exploration, railway and bridge exploration, and other application. It is also applied in hydrologic geology and engineering geology such as searching for ground water, locate base of dam and flood protection levee incipient fault, can still used for geothermal prospecting.
Features,Composition & Functions
Principal machine of the system is of multiple uses. It can be used not only for conventional DC electric survey, but also for multi-electrode resistivity survey. It has the features of high accuracy, fast speed survey, large memory capability, Chinese character menu session, easy operation, and flexible multiplex electrode converter. Its self-check function can even locate each switcher. WGMD-3 system can connect many multiplex electrode converters in series to compose cascade by communication cable. This system includes these parts:
(1) WDJD-3 mutil-function digital DC induced polarization resistivity instrument
Conventional DC resistivity measurement
Multi-electrode resistivity measurement
Display and memorize measured result
Integral transmitter and receiver
RS-232C port
Super-low power consumption
13 kinds of arrangement
(2) WDZJ-3 Multiplex Electrode Converter
Accurate and credible microcomputer manipulation
Fast speed relay switcher
Unrestraint Electrode assembly
Switcher array self-check
Double RS-232C port
Free Cascade connection, convenient expansion
(3) BT-WYS software
Data Receiving & format transfer
General data edit and drawing
Electrical sounding automatic explain
Multi-electrode chromatogram process
Chorisogram, chromatogram, 3-D curved surface chart
2-D resistivity inversion
Technical specifications:
(1) WDJD-3 mutil-function digital DC induced polarization resistivity instrument
Receiver
Voltage:
Survey accuracy: if Vp≥10 mV then ± 5‰ ± 1 LSB, if Vp ＜ 10 mV, then ±1% ± 1 LSB
Current: 5A
Survey precision: if IP≥ 10mA then ± 5‰ ± 1 LSB, if IP ＜ 10 mA, then ±1% ± 1 LSB
Receiver ±1%±1 character
50Hz line industrial frequency pressing: ≥80dB
Input impedance:≥50MΩ
Transmitter
Maximum supply voltage: 900V
Maximum supply current: 5A
Power supply impulse width : 1～60s ,
Duty cycle: 1:1
Others
Operating temperature: -10℃～50℃, 95%RH
Power current: ≤55mA
Power: eight D size batteries (or same specs nickel-cadmium battery)
Dimensions (L×W×H): 310mm×210mm×210mm
Weight: 7kg
(2) WDZJ-3 multiplex electrode converter
Electrode converter chanel number: 60
Insulation impedance: ≥500MΩ
Maximum working voltage: 450VDC
Maximum working current: 2.5ADC
Power: eight D size batteries (or same specs nickel-cadmium battery)
Operating temperature: -10℃～50℃
