Tentech EM-4058 Earth Resistance and Resistivity Tester with Memory, RT Clock, Bluetooth and Remote Control Tentech EM-4058 Earth Resistance and Resistivity Tester with Memory, RT Clock, Bluetooth and Remote Control × Voltmeter - In the voltmeter function, the equipment operates as a conventional; voltmeter, making it possible to measure voltages generated by parasitic currents Advanced Features - Automated detection of abnormal conditions that may cause excessive errors (low battery, too high noise interference, too high test spikes resistance) Soil Resistivity Computing - When performing soil resistivity measurements, the operator informs to the EM4058 the distance between spikes and the equipment automatically computes soil resistivity using the Wenner full equation Earth Ground Tester - Smart The EM4058 earth tester is a digital, microprocessor controlled instrument that allows to measure the earth resistance and ground resistivity (using Wenner´s method), as well as to detect parasitic voltages present in the ground. This instrument is suitable to measure earth systems in power substations, industries, distribution networks, etc., according to IEC 61557-5. It is also suitable for soil resistivity measurements, in order to optimize the earth systems project. It is a fully automatic and easy-to-operate equipment. Before starting each measurement, the equipment will check that conditions are within appropriate limits and will notify the operator in case any abnormality turns up (too high interference voltage, too much resistance in test spikes, very low test current, etc). Then, it will look for the most suitable range and show measurement results in an alphanumeric display. In order to conveniently test the earth system, EM4058 allows to perform measurements using the test current which frequency may be operator-selected (270 Hz, 570Hz, 870Hz, 1170Hz or 1470 Hz)
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