Wda-1 Super Digital DC Res/IP Meter

Function:

？ General resistivity/IP sounding
？ Multi-electrode 2D/3D resistivity imaging
？ Multi-electrode 2D induced polarization imaging
？ Rock sample test
？ Work as receiver in large power IP system

Application:

？ Underground water inspection
？ Energy resource prospecting
？ City geophysical exploration
？ Railway and bridge inspecting
？ Metal and nonmetal mineral resources survey
？ Engineering geology
？ Geothermal field survey

Main Features:

？ Maximum power supply reaches 7200W (1200V6A), input voltage range is 64Vp-p, measurement precision of small signal is high (voltage may be 0.1mV and current may be 0.1mA with 1% accuracy); SP compensation range is up to ± 10V.


Technical specifications:
Transmitting
Maximum power
7200W(VES), 2400W(Imaging)
Maximum voltage
1200V(VES), 2400 peak-to-peak; 800V(Imaging), 1600 peak-to-peak
Maximum current
6A(VES), 3A(Imaging)
Power supply pulse width
1~60s, duty cycle is 1: 1
Receiving
Voltage
± 32V (24 bit A/D)
Vp accuracy(before
Stacking)
If Vp≥ 5mV, ± 0.2% ± 1LSB. If 0.1mV≤ Vp<5mV, ± 1%± 1LSB.
Current
6A (24bit A/D)
Ip accuracy(before stacking)
If Ip≥ 5mA, ± 0.2% ± 1LSB; If 0.1mA≤ Ip<5mA, then ± 1% ± 1LSB...
Apparent Polarizability
Accuracy
± 1% ± 1LSB
Suppression
≥ 80dB, for 50Hz or 60Hz (industrial frequency interference) either in common mode or differential mode interference
Input impedance
>50MΩ
SP compensation range
± 10V
Other
PDA
Windows Mobile 5.0 system, 624MHz CPU, 640x480 true color, 128MB Flash ROM/64MB SDRAM, 512MB CF card, blue tooth, infrared, serial port, 2 rechargeable batteries
Physical Interface
DC Input, A/B/Dipole-pole/M/N, Recharging port, 2 Multi-electrode Socket, RS-232, Bluetooth
Working temperature
-10° C ~+50° C, 95%RH
Storage temperature
-20° C ~+60° C, 95%RH
Power supply
Built-in 7.4V, 4Ah battery (or alternative of 12V external power supply) lasts continuously for 20 hours
Main unit ports support
A, B, M, N, ports for DC high voltage, ports for external battery or recharge, 2 cable ports, RS-232, Bluetooth
Weight
4kg(WDA-1); 6kg(WDA-1B)
Dimension
270mmx246mmx123mm(WDA-1); 340mmx295mmx152mm(WDA-1B)
Shield Case
Ip67, 81-41/STANAG 4280
Built-in Power Supply (Only for WDA-1B)
Output voltage
50V, 100V, 150V, 200V selectable
Maximum voltage
200V
Maximum current
0.7
Multi-electrode Cable and Electrodes
Cable
32 cores, outer diameter is Φ 6mm
Cable for each switcher
2 pcs
Electrode taps
30 taps/pcs
Distance of adjacent taps
Generally 5m or 10m (up to users request)
Maximum voltage
450V
Maximum current
3A
Cable insulation
Insulation between two cores of a cable is more than 500M /500V
Copper electrode
Φ 12mm x 280mm, with plug-pull clamp
Shield Case
Ip67, 81-41/STANAG 4280
Distributed 2-D/3-D High-density Resistivity and 2-D High-density IP Switching Cable and Electrode
Cable
Polyurethane coated, outer diameter is Φ 8mm, 10 channels/chain (ten electrodes are allowed to connect to each cable chain)
Distance between adjacent
Cable switch boxes
1~10m (up to users request)
Box size
30mmx100mm (box only),
39mmx170mm (including rubber head)
Maximum voltage
800V
Maximum current
3A
Cable insulation
For cable between A, B connecting ports and the low voltage connecting port, insulation is more than 1000M /1000V; For cable between low voltage connecting ports, insulation is more than 500M /500V
Working temperature
-20° C ~+70° C
Stainless electrode
Φ 10mm x 280mm, with stainless spring