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WTS - Model WDDS-2/3 -Digital D.C Resistivity Meter
WDDS-2/3 Digital DC resistivity meter is a new generation one. It overcomes the limitation of analog electrical equipment and possesses all advancements suitable for resistivity-sounding surveys. It takes the 32-bit microcontroller technology and 24-bit A / D technology development. It is particularly designed for very shallow and medium-deep Geophysical Investigations. It is reputed due to its high resolution, reliability, and measurement accuracy. It is a more robust, easy-to-use, automatic, field-proof, and more compact device for Resistivity Surveys. It records a direct reading of resistivity, Self-potential, and well logging.
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- 1-D VES Sounding
- 1-D Resistivity Profiling
- SP Survey
- Hydro-geology ;for shallow and deep aquifer mapping or GW Exploration ,Water Recharge Zone Identification and Underground water inspection
- Engineering geology for foundation study /pre-concrete structure identification
- Metal and non-metal mineral resources detection
- City geophysical exploration, railway and bridge inspection and so on
- Geothermal prospecting
- 32-bit microcontroller technology and 24-bit A / D technology
- Up to 3500W of power supply, 48Vp-p voltage range
- USB port enables the instrument to communicate with other computers.
- Auto compensation of self-potential, drift and electrode polarization
- Receiver supports transient over-voltage protection for input voltage; transmitter supports over-voltage protection, over-current protection and AB open-circuit protection.
- Built-in 12V lithum battery( also support external 12v battery) for 20 hours continously work.
- Able to store measuring data for more than 150,000 times, including voltage, current, resistivity, relative error, SP, array constant, measuring point and so on.
Transmitting
- Max transmitting power: 3500W
- Maximum voltage: ±1000V(2000Vp-p)
- Maximum current: ±3.5A (over-current protection)
- Power supply waveform: duty cycle is 1:1, bipolar
Receiving
- Input impedance: ≥50MΩ
- Input voltage range: ± 24V, ± 0.5% ± 1 LSB, 24 bit A/D
- Delay time: 0.1 ~ 5s (programmable)
- SP compensation range: ± 10V
- Max current sampling resolution: 0.02μA
- Suppression: 80dB for 50Hz or 60Hz (industrial frequency interference)
- Current measurement: 3.5A, ± 0.5% ± 1 LSB, 24 bit A/D
Others
- LCD display: 160 * 160 dot matrix LCD
- Storage: ≥1GB
- Working temperature: -10°C~+50°C (Environmental), 95 % RH
- Storage temperature: -20°C~+60°C (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-2);
- ≤5.5kg(WDDS-3)
- Dimension: 270mm × 246mm × 175mm