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The accurate measurement of gas and liquid is important to obtain specific proportions as per process requirement is necessary. The maintenance of definite rates of flow is important for maximum efficiency and production. The paper proposes a novel technique for the measurement of flow of a conducting liquid in which no excitation coil is required. The technique consists of four metal electrodes inserted into the selected zone of the flow tube, which are always in contact with the liquid and produce no obstruction to liquid flow. This electrode system is excited from an ac source, and the output signal has been found to be linearly related with the liquid flow under the laminar-flow condition, along with a small nonlinear zone at turbulent conditions.

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