DYNAMIC CHARACTERISTICS OF A HYDRAULIC WHEATSTONE BRIDGE MASS FLOWMETER

A. Svete, J. Kutin, I. Bajsić

Abstract

A hydraulic Wheatstone bridge represents a potential solution for a direct mass flow meter with a linear measuring characteristic. In order to investigate the dynamic performance of the flowmeter, a dynamic physical-mathematical model was built. Since the flowmeter's characteristic is linear, it was found to be unaffected by the square root errors, which is the case with standard differential pressure flowmeters. On the other hand, the flowmeter’s frequency characteristic exhibits a typical resonance. The theoretical results were also confirmed experimentally. Experimental studies of the water flow pulsation effects on the flowmeter were conducted in a test rig with a diaphragm-type flow pulsator.

Keywords

hydraulic, Wheatstone bridge, flow meter, flow pulsation

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IMEKO-TC9-2013-098.pdf

DOI

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IMEKO TC

TC9 - Flow Measurement

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