Automated measurement and calculation of ground resistivity using Wenner’s formula
High interference (noise) rejection
Interference voltage measurement
USB interface and remote interface
Powered by LFP (LiFePO4) rechargeable battery, a safer, more reliable and longer-lasting battery
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.
The EM4058 has a Frequency Scan feature that performs an earth resistance measurement with all available frequencies automatically and calculates, displays and prints the average result besides the individual result of each frequency. Those results are saved on the internal memory.
The EM4058 has a built-in memory to store measurements and a built-in printer, besides the USB interface that allows to communicate measured values to a computer or data logger for their later analysis and has a remote interface that allows remote control of it through an Android device. It is a portable, strong and lightweight equipment, suitable to be used out in the field and under severe weather conditions.