Low-resistance tester GEOHM PRO

earth resistance

High-Precision Earthing and Low-Resistance Measuring Instrument with/without GPS. The GEOHM PRO / XTRA is capable of much more than just easy and reliable implementation of the most common methods of earth measurement. The measuring method for testing lightning protection systems under highly realistic conditions based on various types of the pulse measuring method is noteworthy in this respect. Thanks to extensive measuring accessories, earth measurements and resistance measurements can be easily implemented in any environment at any earthing or lightning protection system without disconnecting the earth electrode. Furthermore, a professional earthing analysis can be conducted on the basis of measured interference voltages and interference frequencies. The GEOHM XTRA is additionally equipped with an integrated GPS module for saving the positions of devices under test. Highlights - Measurements with various measuring methods: - Earthing resistance by means of the 3/4-wire measuring method - Selective earth resistance by means of the 3-wire measuring method with current clamp Advantage: no influence on parallel earth electrodes! - Earth loop resistance with 2 current clamps Applications: for example where the use of auxiliary electrodes is not possible Advantage: no need to disconnect the earthing system! - Soil resistivity in Ωm according to the Wenner method - For the preparation of soil assessments - Leakage current / current by means of current clamp or flexible current sensor - Low-resistance measurement with ≥ 200 mA per EN 61557-4 / VDE 0413-4