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WDJD-4A

Geological exploration instrument
November 05, 2024
Category Connection: Geophysical Resistivity Meter
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Tags:
#Geophysical Resistivity Meter #Geo Resistivity Meter #Resistivity Meter Geophysics
Brief: This video explains the main functions and practical uses of the WDJD-4A 2D 3D Multi Channel Geophysical Resistivity Meter in a clear, step-by-step format. You will see how this survey instrument performs electrical resistivity imaging to identify geological features like karst cavities, water-bearing zones, and rock mass integrity, with insights into data interpretation principles.
Related Product Features:
  • Multi-channel system supporting both 2D and 3D electrical resistivity imaging for comprehensive subsurface surveys.
  • High measurement accuracy with voltage channel precision of ±0.5% and current channel precision of ±0.5% under standard conditions.
  • Powerful transmission capability with maximum transmit power of 4500W, supply voltage up to ±900V, and current up to ±5A.
  • Advanced 50Hz power frequency interference suppression exceeding 80dB for clean data acquisition in noisy environments.
  • WDZJ-3 multi-channel electrode converter supporting 60 electrodes with high insulation properties ≥500 MΩ.
  • Portable design weighing ≤7KG with compact dimensions of 310mm*210mm*210mm for field deployment.
  • Wide operating temperature range from -10°C to +50°C with 95% RH suitability for various field conditions.
  • Robust power system using 8 No. 1 batteries with low current consumption ≤55mA for extended operation.
FAQs:
  • How does the resistivity meter interpret karst features in geological surveys?
    The instrument identifies karst through resistivity anomalies: cavities show high resistance, while clay/water-filled caves show low resistance. Partially filled karst displays beaded anomalies with high resistance upper sections and low resistance lower sections, following specific interpretation principles based on background resistivity and structural alignment.
  • What is the measurement accuracy of the voltage and current channels?
    The voltage channel offers ±0.5% accuracy when Vp≥10mV and ±1% when Vp<10mV. The current channel provides ±0.5% accuracy when Ip≥10mA and ±1% when Ip<10mA, ensuring precise data collection for both parameters.
  • What after-sales support and warranty does the product include?
    We provide a one-year warranty covering mechanical failures and technical faults, with free repairs and technical assistance. Support includes phone instructions within 2 hours, optional on-site engineer dispatch, free training in China, and regular follow-up services to gather customer feedback.
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