Vibratory meter with pointed flow tube

Abstract

A first and second vibratory meter (5), and methods of manufacturing the same are provided. The first vibratory meter includes a pickoff (170l), a driver (180), and a flow tube (400) comprising a tubeperimeter wall with: a first substantially planar section (406a), a second substantially planar section (406b) coupled to the first substantially planar section to form a first angle theta1 (404), and a first curved section (406c). The second vibratory meter includes a pickoff, a driver, and a flow tube (700) comprising a tube perimeter wall with: a first substantially planar section (706a), a second substantially planar section (706b) coupled to the first substantially planar section to form a first angle theta1(704), a third substantially planar section (706c), a fourth substantially planarsection (706d), and a fifth substantially planar section (706e).

Description

Technical field [0001] The examples described below relate to vibrating meters and flow tubes for vibrating meters. More specifically, the example relates to a vibrating meter including a flow tube with a pointed section. Background technique [0002] Vibration meters (such as Coriolis mass flow meters and vibrating densitometers) generally operate by detecting the movement of a vibrating flow tube containing flowing material. The properties associated with the material in the flow tube (such as mass flow, density, etc.) can be determined by processing measurement signals received from the motion transducer associated with the flow tube. Vibration meters have meter assemblies that have one or more flow tubes in a straight configuration or a curved configuration. Each flow tube configuration in a Coriolis mass flowmeter has a set of natural vibration modes, which can be a simple bending type, torsion type or coupling type. Each flow tube can be driven to oscillate in a preferre...

AI Technical Summary

Problems solved by technology

[0007] However, when channel dividers are incorporated into existing vibrating meter designs, such as in multi-channel flow tubes with circular diameters, the channels reduce the cross-sectional area available for flow through the flow tubes.

Images