Smooth Bore, Chordal Transit-Time Ultrasonic Meter and Method

摘要

A flow element for an ultrasonic flowmeter having a plurality of transducers for analyzing fluid flow in a pipe. The flow element includes a housing having a bore with an internal diameter and a surface through which fluid flows and a plurality of cavities each of which has an opening in the surface. Each of the cavities has one of the plurality of transducers disposed in it. The flow element includes a liner that covers the openings of the cavities which prevents fluid flowing through the bore from entering the cavities.

主权项

1. An apparatus for determining fluid flow in a pipe comprising:
a transit time chordal ultrasonic meter that eliminates dependence of meter factor on Reynolds number for measuring the flow through the pipe, the meter having a plurality of cavities with transducers disposed in the cavities which produce ultrasonic pulses that pass through the fluid and define multiple chords, the fluid velocity measured by clocking the pulses' time traveling diagonally upstream and downstream between pairs of the transducers.