FIELD: medical engineering.
SUBSTANCE: device has a measuring and two indifferent electrodes, switchboard, three amplifiers, three memory units, three subtraction units, two calibrated resistors, two division units, flip-flop unit, controllable potential divider, potential divider, two recorders and reference voltage source. The second device embodiment has a measuring and two indifferent electrodes, three switchboards, three amplifiers, three memory units, three subtraction units, two calibrated resistors, division unit, two flip-flop units, controllable potential divider, potential divider, two recorders and reference voltage source. The third device embodiment has a measuring and two indifferent electrodes, three switchboards, two amplifiers, four memory units, subtraction unit, two calibrated resistors, two flip-flop units, two controllable potential dividers, potential divider, two recorders and reference voltage source, voltage unit selector, two electronic keys, three coincidence circuits and comparator unit.
EFFECT: high accuracy of measurement transformations; high reliability of recorded data parameters.
12 cl, 3 dwg, 3 tbl
