1D VRS Geophysical resistivity meter for geophysical survey
Introduction:
1D VRS (Vertical Electrical Resistivity Sounding)
VES, which stands for Vertical Electrical Sounding, is a
geophysical method used to determine the electrical resistivity of
subsurface materials to a depth of several hundred meters.
With injected DC current into the ground using a pair of
electrodes, usually referred to as the current electrodes. The
current is then transmitted into the ground, and the resulting
voltage is measured using a pair of electrodes, usually referred to
as the potential electrodes. The distance between the current and
potential electrodes is gradually increased, and measurements are
taken at each distance, The resistance of the subsurface material
is calculated from the voltage and current measurements.
Geophysical resistivity meter on ground will generate each measured
point's apparent resistivity. Base on different apparent
resistivity, we can judge what exist in underground.
Features for WDDS-2C geophysical resistivity meter
1.Light and fexible: advanced transmitter and receiver are designed
in one unit, small and portable
2.Up to 6000W of power supply, 48Vp-p voltage range, high precision
3.32-bit micro-controller technology and 24-bit A / D technology
4.Bluetooth technology, wireless remote control: the system is
controlled by tablet PC through Bluetooth technology, all operation
easy and visiable
5.Improved anti-interference technology and high accuracy
6.USB port enables the instrument to communicate with other
computers.
7.Auto compensation of self-potential, drift and electrode
polarization
8.Receiver supports transient over-voltage protection for input
voltage; transmitter supports over-voltage protection, over-current
protection and AB open-circuit protection.
Technical Specifications:
| Maximum transmitting power : | 6000W |
| Maximum voltage: | ±1200V(2400Vp-p) |
| Maximum current: | ±5A(over-current protection) |
| Power supply waveform: | duty cycle is 1:1.bipolar |
| Input impedance: | ≥50MΩ |
| Input voltage range: | ±24V, ±0.5% ±1LSB,24 bit A/D |
| Delay time: | 0.1~5s (programmable) |
| SP compensation range: | ±10V |
| Max current sampling resolution: | 0.02μA |
| suppression: | 8odB for 50Hz or 60Hz (industrial frequency interference) |
| current measurement: | 5A, ±0.2% ±1LSB,24 bit A/D |
| working temperature: | -10°C~+50°℃(Environmental),95 %RH |
| storage temperature: | -20°C~+60C(Environmental) |
| Power supply: | built-in 12V lithium battery(or external 12V power supply),more
than 20 hours of continuous work |
| Internal transmitting power :(only WDDS-3) : | Max current is 300mA, |
| Max voltage is 200V |
| Weight:: | ≤4.2Kg(wDDS-2C);
≤5.5kg(WDDs-3C) |
| Dimension: | 270mm* 246mm* 175mm(WDDS-2C)
350mm*270mm * 200mm(WDDS-3C) |
| Tablet PC: | Windows 10 64 bit operating system,2GB memory,Bluetooh, USB |
Product details:
