Earth Resistivity Meter
The Earth Resistivity Meter delivers exceptional accuracy, multi-frequency capability, and rapid data acquisition, making it the ideal tool for groundwater exploration, near-surface investigations, and archaeological studies. Designed for efficiency and durability, this instrument ensures consistent results even in challenging environments.
ELECTRICAL RESISTIVITY TOMOGRAPHY
Earth Resistivity Meter – High-Precision Geophysical Measurement System
The Earth Resistivity Meter is a compact, multi-frequency geophysical instrument designed for groundwater exploration, near-surface investigations, environmental surveys, and archaeological prospection. Built with advanced electronic components and a robust measurement system, this device provides fast, accurate, and reliable resistivity data for professional field applications.
With more than 150,000 reading storage capacity, high-resolution 24-bit ADC, and full remote control capability, the Earth Resistivity Meter delivers superior performance even under challenging field conditions.
| Category | Details |
|---|---|
| Ultra-Compact & Lightweight Design | – Size: 25 × 12 × 5 cm– Weight: 742 g– Easy to carry and ideal for long-duration field surveys |
| High-Performance Transmitter | – Frequency range: 0.2 – 30 Hz– Constant output current: 1 mA – 100 mA (8 steps)- Output voltage: up to 380V p-p, square wave– 10-watt output power- Transmitter cable crosstalk reduction for clean signals |
| Sensitive & Accurate Receiver System | – Lock-in amplifier with in-phase/out-of-phase detection- 24-bit ADC resolution (down to nV and 0.1 mrad)- Dynamic range: >130 dB– Input voltage max: 1V p-p– Accuracy: better than 0.1%– Full calibration for phase and amplitude across all frequencies |
| High-Speed Data Acquisition | – Acquisition speed:— 1.5 sec/sample @ 1.04 Hz— <0.5 sec/sample @ 8.33 Hz– Calculates apparent resistivity for multiple array configurations- High suppression of 16.66 / 50 / 60 Hz noise |
| Intelligent Operating Modes | – Stand-alone tomography mode- Monitoring mode- Fast automatic mapping function- Contact resistance measurement- Complex resistivity measurement (16 frequencies)- Internal memory: >150,000 readings |
| Flexible Power Options | – 4 × internal NiMH AA batteries– External 9–15V supply (1A)- AA alkaline batteries- 3-hour quick-charge system- Runtime: 20–50 hours (typical)- 1.5 hours at maximum output power |
| Advanced Connectivity | – Isolated RS-232 communication- Full remote control for all functions- Interface for active electrodes– Compatible with Electrical Resistivity Tomography (ERT) systems |
| Category | Specification |
|---|---|
| Dimensions | 25 × 12 × 5 cm |
| Weight | 742 g |
| Display | 4 × 20 character LCD |
| Output Voltage | up to 380V p-p |
| Output Current | 1–100 mA (8 steps) |
| Frequencies | 0.2–30 Hz (16 selectable) |
| ADC Resolution | 24-bit |
| Dynamic Range | >130 dB |
| Internal Memory | >150,000 readings |
| Power Options | NiMH AA, alkaline AA, external 9–15V |
Applications
The Earth Resistivity Meter is suitable for multiple geophysical and environmental applications, including:
🔷 Groundwater Prospecting
Aquifer detection
Groundwater mapping
Subsurface flow assessment
🔷 Near-Surface Geophysics
Engineering site investigation
Soil profiling
Environmental assessment
🔷 Archaeological Surveys
Detecting buried structures
Mapping historical foundations
Non-invasive subsurface evaluation
Why Choose the Earth Resistivity Meter?
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High accuracy and fast data acquisition
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Lightweight and easy to operate
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Ideal for long field campaigns
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Advanced noise suppression
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Suitable for professional geophysical surveys
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Low maintenance and multi-mode adaptability
This instrument is designed for engineers, hydrogeologists, geophysicists, mining operators, and researchers who require high-precision resistivity measurements with minimal setup time.
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