The method used nowadays to measure a liquid flow provides for excitement of electromagnetic field in a controlling liquid flow; measurement of electromotive force induced on a electrode system; production of informational signal based on the measured electromotive force value; adjustment of exciting electromagnetic field intensity.

Unlike the typically used method, the newly-patented method provides for exciting electromagnetic field adjustment depending on current flow rate of controlling liquid. The flow rate is determined based on the received electromotive force values, considering that the intensity of exciting electromagnetic field should be minimal for the given current controlling liquid flow rate information signal accuracy.

The second modification of the new method presumes to take into account controlling liquid flow velocity dynamics, and/or controlling liquid parameters, and/or specific conditions (parameters) existed during the measurement of controlling liquid flow velocity to determine exciting electromagnetic field intensity minimum.

To adjust electromagnetic field intensity in accordance with the third formula of the patent, exciting electromagnetic field intensity is changed in inverse proportion to the current flow rate of controlling liquid.

Back