Electrical exploration measurements are carried out by meters of the VPF-210M type. Technical characteristics of the meter VPF-210M:
Operating frequency range 0,019-625Hz; measured voltage range 0,001-5000 mV; Voltage measurement error, %
Normal version 0.5 %
Execution with increased precision 0.2%
Measurement error of phase parameters 0,02 degree; Input resistance is 3; 50 Hz interference suppression at low frequencies, not less than 100 dB; Internal memory 500 KB; Average power consumption 0.5 W; Receiver weight 2.6 kg.