Method of compensating the interference DC voltages in the electrode circuit in magnetic-conductive flow measurement

摘要: An arrangement for magnetic-inductive flow measurement of an electrically conductive liquid flowing in a conduit includes magnetic field generator which generates periodically reversed passing through the perpendicularly to direction. In two electrodes are disposed. The voltage taken from is applied measuring amplifier. Connected output amplifier sample and hold circuits controlled by control circuit such manner that they equal induction values opposite sign store sampling until next sampling. A subtraction forms difference stored values. loop between input there storing predetermined compensation time intervals value regulating zero. method resides each interval lies within interval, corresponding switched-on field, also preceding lies.