Water Resistivity Meter DC Surface Geophysical Exploration Instrument

Water Resistivity Meter 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. Water Resistivity Meter is particularly designed for very shallow and medium-deep Geophysical Investigations. It is reputed due to its high resolution, reliability, and measurement accuracy. Water Resistivity Meter 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.

1. Receive part:

Voltage channel: ±24V, ±0.5% ±1 word, 24-bit A/D

The highest sampling resolution of voltage: 0.01μV

Input impedance: ≥50MΩ

SP compensation range: ±10V

Current channel: 3.5A, ±0.5% ±1 word, 24-bit A/D

Current maximum sampling resolution: 0.02μA

The suppression of 50Hz power frequency interference is better than 80dB

2. Launch part:

Maximum transmit power: 3500W

Maximum supply voltage: ±1000V (ie 2000Vp-p)

Maximum supply current: ±3.5A (ie 7Ap-p)

Power supply pulse waveform: 1:1 duty cycle, bipolar

3. Other:

Display: 160×160 dot matrix LCD

Storage capacity: ≥1GB

Instrument power supply: built-in lithium battery (or external 12V power supply), can work continuously for more than 20 hours

Host interface: A, B, M, N, DC high voltage, external battery and charging, RS-232 and USB, etc.

Volume: 270mm×246mm×175mm

Weight: ≤4.2kg (WDDS-2) ≤5.5kg (WDDS-2B)

Working temperature: -10℃～+50℃, 95%RH

Storage temperature: -20℃～+60℃

Built-in high voltage power supply (only WDDS-2B): the highest working voltage is 200V.