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Abstract

A system for measuring the flow rate of electrolytic fluids includes a flow cell which has a cylindrical flow channel receptive of the fluid flow to be measured and a pair of spaced apart electrodes configured to conform to the cylindrical surface of the flow channel and to be flushed therewith. The electrodes are electrically conductive and inert to the fluid of the flow and a channel is configured to effect contact of the electrodes with the fluid flow for a desired range of flow measurement. A monopolar pulse train is applied across the electrodes to effect a cell impedance across the electrodes which is inversely proportional to the rate of flow. A control signal is produced in response to the potential across the electrodes for a given unit of time and this control signal is applied to a generator for producing the monopolar pulse train in order to vary the pulse train current in the given unit of time to effect an increase in the current in response to an increase in flow rate whereby the cell impedance is stabilized for every flow rate and the electrode potential is representative of the flow rate.

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First Claim