ELECTROMAGNETIC FLOW CONVERTER Russian patent published in 2017 - IPC G01F1/58 

FIELD: electricity.

SUBSTANCE: electromagnetic flow converter includes a primary converter 1 comprising the inductor 2 and the conduit 3 with electrodes 4 connected to the signal inputs of the digital-analog converter 5 an output of which is connected to an input of the microcontroller 6. The scheme also contains a bridge current switch 7, outputs of which are connected to the inductor 2, and the control inputs are connected to the outputs of the microcontroller 6. The bridge current switch 7 is powered by a current source 8, one of the outputs connected to the bridge switch 7, and the other output to one of the ends of the current sensor 9 and the input of the amplifier 10 an output of which is connected to the input of an external reference signal of the analog-to-digital converter 5, the end of the current sensor 9 is connected to the common point of the scheme.

EFFECT: ensuring the independence of the flow measurement error from the instability of the inductor power supply due to the fact that the input of the external reference signal of the ADC is supplied with the voltage amplified to the normalized value from the current sensor, relative to which conversion to an ADC is carried out, there is an automatic division of the input signal and the signal from the current sensor included in the inductor supply circuit, the result of the division is independent of the inductor power supply current, and due to division of the input signal to the reference signal in one measuring cycle, the speed is not decreased and output of the inductor power current source from the stabilization mode does not impair the accuracy and dynamic range of measurement.

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