¡¡¡¡WGMD-3 multi-electrode
resistivity surveying system
¡¡¡¡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: 6V
Survey accuracy: if Vp¡Ý10 mV then ¡À 5¡ë ¡À 1 LSB, if Vp £¼ 10
mV, then ¡À1% ¡À 1 LSB
- Current: 5A
Survey precision: if IP¡Ý 10mA then ¡À 5¡ë ¡À 1 LSB, if IP £¼ 10
mA, then ¡À1% ¡À 1 LSB
- Receiver ¡À1%¡À1 character
- 50Hz line industrial frequency pressing: ¡Ý80dB
- Input impedance:¡Ý50M¦¸
¡¡¡¡Transmitter
- Maximum supply voltage: 900V
- Maximum supply current: 5A
- Power supply impulse width : 1¡«60s ,
- Duty cycle: 1:1
¡¡¡¡Others
- Operating temperature: -10¡æ¡«50¡æ, 95%RH
- Power current: ¡Ü55mA
- Power: eight D size batteries £¨or same specs nickel-cadmium
battery£©
- Dimensions (L¡ÁW¡ÁH): 310mm¡Á210mm¡Á210mm
- Weight: 7kg
¡¡(2) WDZJ-3 multiplex electrode converter
- Electrode converter number: 60
- Insulation impedance: ¡Ý500M¦¸
- Maximum working voltage: 450VDC
- Maximum working current: 2.5ADC
- Power: eight D size batteries (or same specs nickel-cadmium
battery)
- Operating temperature: -10¡æ¡«50¡æ
