The S480 4-Terminal Earth Tester is a robust, compact automated instrument engineered to measure earth electrode resistance and soil resistivity. Designed for demanding field conditions, it provides engineers with the reliable data required to establish and maintain safe grounding systems for critical electrical infrastructure. It serves as a practical, proven tool for optimizing electrode depth and site location for new power grids, verifying the integrity of existing earth grids, and conducting detailed geological or archaeological subsurface investigations.
To ensure dependable precision, the S480 excels in its 4-Terminal Measurement Method, which effectively minimizes test lead wire and contact resistance from the final reading. Because substations and industrial sites are often plagued by heavy electrical noise, the tester is equipped with advanced dual-filtering technology. Built-in Fast Fourier Transform (FFT) actively isolates the test signal from background noise, while Automatic Frequency Control (AFC) adjusts the test frequency to avoid localized interference, resulting in stable and interference-resistant measurements in the field.