GEOHM PRO/XTRA: • 3 and 4-wire earth resistance measurement • 3-wire earth resistance measurement with current clamp • Loop resistance measurement with 2 current clamps without discon- nection (in case the use of auxiliary electrodes isn’t possible) • Soil resistivity (Wenner method) • Current measurement with the help of clamp meters (e.g. leakage current measurement) and flexible clamp meters • Low-resistance of the PE conductor with 200 mA (per IEC 60364-6-61, point 6.12.2) GEOHM XTRA: • Integrated GPS module • Measured values are save together with GPS coordinates