FLANGED VORTEX FLOWMETER HAVING INTEGRATED TAPERED EXPANDED DIAMETER PART

摘要

PROBLEM TO BE SOLVED: To output an accurate flow rate measurement value, even at the outside of a conventional flow rate range, when a large diameter flow tube is used for reducing the output loss.;SOLUTION: In this manufacturing method for a vortex flowmeter, a sensor component 222 is combined with at least one of two or more integrated flow tubes, having hole parts 92 and 102 with apertures smaller than flow tube flange parts 88 and 98, having two or more different size numbers. Each of the integrated flow tubes 80 and 82 is constructed of a flange part, a flow tube hole part, and an large-diameter part (or a small-diameter part) smoothing transition of the flow from the large-diameter flange part to the small-diameter hole part.;COPYRIGHT: (C)2005,JPO&NCIPI