Abstract
The conventional vortex shedding flowmeter performs satisfactorily in the metering of many types of fluid, but the reliability of its sensor can be questionable when exposed to hostile environments. In this paper the standard piezoelectric sensor in a commercially available flowmeter was replaced by electrodes positioned within the flow tube. For air flows the periodic change in magnitude of the electrostatic charge, accumulating on the electrodes, through the action of the streaming current, was seen to occur at a frequency equal to that for the unmodified vortex shedding meter. Its inherent simplicity in construction and robustness given this meter appealing aspects in some applications.
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