Description
Product Overview
The ETCR 3100C is a professional earth resistance and soil resistivity tester designed for accurate field measurements. It supports 2‑wire, 3‑wire and 4‑wire testing methods, employing Fast Fourier Transform (FFT) and Automatic Frequency Control (AFC) for superior accuracy. Housed in a rugged, waterproof IP65 case, the unit weighs 12.95 lb and includes a high‑capacity rechargeable lithium‑ion battery for extended operation.
Usage
Ideal for electricians, telecommunications engineers, construction supervisors and utility workers, the 3100C excels in outdoor environments such as substations, cable trenches and building sites. Its large backlit LCD and audible alarms help users monitor earth resistance, soil resistivity and earth voltage in real time, ensuring safety and compliance during installation and maintenance.

Why Choose Us
ETCR combines decades of measurement expertise with modern digital technology. The 3100C offers multi‑method testing in a single portable device, robust IP65 protection, and data storage for up to 300 measurement sets. USB connectivity enables quick data export for reporting and analysis, reducing downtime and improving workflow efficiency.
Key Features
- Multi‑method earth resistance measurement (2‑4 wire) with FFT and AFC for high accuracy
- Versatile functions: earth resistance, soil resistivity, earth voltage (AC 0‑600 V)
- Large backlit LCD with bar‑chart display and adjustable alarm thresholds
- Rugged IP65 waterproof case, shock‑resistant and drop‑tested for field durability
- Stores up to 300 data sets; USB port for easy data transfer and report generation
FAQ
What measurement ranges does the ETCR 3100C cover?
The device measures earth resistance from 0.00 Ω to 30.00 kΩ, soil resistivity from 0.00 Ω·m to 9 000 kΩ·m, and earth voltage AC up to 600 V.
How long does the battery last on a full charge?
With the included lithium‑ion battery, the tester can operate continuously for up to 12 hours under typical field conditions.
Is the unit suitable for harsh outdoor environments?
Yes, the ETCR 3100C meets IP65 standards, providing protection against dust and water jets, and its rugged housing resists shocks and drops.
Can I export measurement data for analysis?
Data from up to 300 measurement sets can be downloaded via the built‑in USB port and imported into standard spreadsheet or reporting software.
What accessories are included?
The package contains the tester, a rechargeable battery, charging cable, protective case, and a set of test leads for 2‑, 3‑ and 4‑wire configurations.







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