Geophysical Resistivity Meter Geophysical Equipment For Underground Water Detection And Metal Prospecting

Geophysical Resistivity Meter Geophysical Equipment For Underground Water Detection And Metal Prospecting

1. Water resources, metal and nonmetal mineral resources detection
2. City geophysical exploration, railway and bridge inspection
3. Hydrology and engineering geology as inspecting dam base and flood protection levee for incipient faults
4. Geothermal prospecting

1. 1D resistivity sounding

2. 1D induced polarization sounding

3. 2D resistivity imaging

4. 2D induced polarization imaging

System composition

Whole system takes WDA-1 as control unit, can accomplish centralized 2D multi-electrode resistivity survey with WDZJ-4/WDZJ-120 multi-electrode converter, centralized multi-electrode survey cable and electrodes; also can accomplish Distributed 2D/3D multi-electrode resistivity survey and 2D multi-electrode Res & IP survey with distributed multi-electrode survey cable and electrodes.

	System model	Host machine	Converter	DC high voltage power	Cable & Electrode
Centralized 2D multi-electrode Res Survey	WGMD-9	WDA-1	WDZJ-4 /WDZJ-120	External	Centralized cable and electrodes
Distributed 2D/3D multi-electrode Res surveyDistributed 2D multi-electrode Res & IP survey	WGMD-9	WDA-1	N/M	External	Distributed multi-electrode Res survey cable and electrodes
Distributed 2D multi-electrode Res & IP survey	WGMD-9	WDA-1	N/M	External	Distributed multi-electrode Res & IP survey cable and electrodes

Technical specification (Centralized system):

WDA-1 control and survey unit
Receiving part
1. voltage channel: ±32V(24 bitA/D)
accuracy: as Vp≥5mV, ±0.2% ±1 character
as 0.1mV≤Vp<5mV, ±1% ±1 character
2. Input impedance: >50MΩ
3. Apparent polarization accuracy: ±1%±1character
4. SP compensation range: ±10V
5. Current channel: 6A(24bitA/D)
measurement accuracy: as Ip≥5mA, ±0.2% ±1character
as 0.1mA≤Ip<5mA, ±1% ±1character
6. As for 50Hz industrial interface(common and different mode)depression is better than 80dB
Transmitter part
1. maximium power: 7200W
2. maximium supply voltage: ±1200V
3. maximium supply current: ±6A
4. supply current width :1~60s, duty rate 1:1
Other
1. working temperature: -10℃~+50℃,95%RH
2. storge temperature: -20℃~+60℃
3. power supply: builtin 7.4V4Ah(or outside 12V), lasting for 20h
4. main unit port: A, B, M, N, DC high voltage, outside battery, 2 cable port, RS-232, blue tooth
5. weight: ≤4kg
6. size : 270mm×246mm×123mm
Pocket PC
1. Windows Mobile 5.0 system, 624MHz, 640×480true color, 128MB Flash ROM / 64MB SDRAM,512MB CF card, blue
tooth, infrared, serial port, 2 rechargeable batteries, with Word, Excl.

   Distributed 2D/3D Multi-electrode resistivity & 2D induced polarization switchable cable (optional)
1. Wide-temperature polyurethane cover, diameter: Φ8mm
2. Channel quantity: 10 channels/pc
3. Channel interval: 1-10m (can be customized between range)
4. Switch dimension: Φ30mm×100mm
5. Maximum working voltage: 800V
6. Maximum working current: 3A
7. Cable insulativity: ≥1000MΩ/1000V between A,B pole supply core and A,B core between other low voltage cores; ≥500MΩ/500V between low voltage cores
8. Working temperature: -20℃～+70℃

   Distributed 2D/3D Multi-electrode resistivity & 2D induced polarization survey electrode (optional)
1. Steel electrode: Φ10mm×280mm, with steel connecting spring .
2. Quantity: acquired by customer.