ELECTROMAGNETIC FLOW METER, ELECTROMAGNETIC FLOW MEASUREMENT SYSTEM, CONVERTER FOR ELECTROMAGNETIC FLOW METER

摘要

The limitation on the consumed current is removed to enable highly accurate flow detection. Provided are a current output circuit (16) for adjusting the current value of an output current Io in response to the flow of the target flow for detection calculated by a calculation means; a current/voltage conversion means which is connected to the current output circuit (16) and can convert the current value of the current output circuit (16) to a voltage and externally output the voltage; an amplifier mode switching means (33) which can output an amplifier mode indication signal SAP to the current output circuit (16) and the current/voltage conversion means, said signal SAP indicating switching the normal mode in which the output voltage corresponding to the flow rate is taken as the detection signal and output from the current/voltage conversion means to the transmission lines DL, and the amplifier mode which adds the specified added current to the output current Io for output; and a voltage removal circuit for removing the added voltage component corresponding to the added current from the output voltage when the current/voltage conversion means receives the amplifier mode indication signal SAP from the amplifier mode switching means(33).