4-terminal earth resistance tester, earth resistivity meter, soil resistivity tester

√ 4 pole earth resistance measurement 0 to 20.9kΩ with min. resolution 0.01Ω

√  Auto ranging soil resistivity measurement 0 to 296.6kΩm

√ Series interference voltage Ust(AC only) 0~30Vrms

 √ Measures frequency 400~500Hz

 √ Measureing Voltage Um optional/auto-selected 10Vrms 94Hz, 105Hz, 111Hz, 128Hz

√ Test current maximum 80mA

√ Advance filtering method based on FFT(fast fourier transform) reduces noise interference

√ Compensation for residual resistance Rk

√ Data Memory 1000 sets

√ Conforms to CATIV 150V, CATIII 300V