Digital metal floater flowmeter based on proportional electric capacity angle measuring principle

Abstract

A digital metal flow meter of float - type based on proportional capacity angle measurement principle consists of floater flow rate transducer including conical tube and floater with internal magnetic steel set in conical tube; converter including mechanical link set outside of conical tube, rotary shaft and capacity angle displacement transducer with sensitive element; and intelligent signal processor including selection unit, exciting source, electric charge detection circuit and intelligent component.

Description

technical field [0001] The invention belongs to the technical field of flowmeters, and in particular relates to a digital metal float flowmeter. Background technique [0002] The traditional metal float flowmeter is purely mechanical, which drives the pointer display or the remote transmission mechanism to the remote end through electromagnetic induction coupling and mechanical linkage mechanism. With the advancement of electronic technology, the development of material science and computer technology, a capacitive angular displacement metal float flowmeter has appeared. The principle is to convert the change of the linear displacement of the float into the change of the angle of the external connecting rod, and the change of the angle It is transformed into the change of the capacitance value, that is, the position of the float is measured by detecting the capacitance, and finally the flow is obtained. [0003] At present, in the actual design process of metal float flowme...

AI Technical Summary

Problems solved by technology

[0003] At present, in the actual design process of metal float flowmeter, the cam plate mechanical structure is mainly used for flow calculation, which leads to three deficiencies. First, there are certain defects in theory; second, the mechanical structure cannot accurately measure the flow; Three, it must be designed and manufactured one by one according to the density, working conditions and flow range of the measured medium, which brings inconvenience to the production plant and the user department

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