Duoyi

Earth ground resistance measurements from 0.05 ohm to 20.99k ohms with 0.01 ohm resolution, Soil resistivity measurement 0.3 to 19.99KΩ.m, Interference voltage measurement 0~30V AC rms (DY4300A only), Advance filtering method based on FFT(fast fourier transform)reduces noise interference, Rich test results displayed include resistance of earth spikes, frequency of test current, detected voltage and frequency of interference, residual resistance Rk, etc. Auto/manual frequencies optional(94/105/111/128Hz), Compensation for residual resistance Rk, Data memory 1000 sets, Conforms to CATIV 150V, CATIII 300V