초록 ▼

A fluidic oscillator flowmeter employs a fluidic oscillator wherein the frequency is proportional to flow through the oscillator. The oscillating flow is divided into two discrete paths, facilitating the counting of the frequency and the transduction of the frequency into a flow measurement indicati

A fluidic oscillator flowmeter employs a fluidic oscillator wherein the frequency is proportional to flow through the oscillator. The oscillating flow is divided into two discrete paths, facilitating the counting of the frequency and the transduction of the frequency into a flow measurement indication. In one embodiment the flowmeter may be inserted into a large flow stream, wherein it utilizes only a small portion of the measured flow and presents a streamlined profile to the flow to minimize pressure losses. Alternatively, the entire measured flow may be passed through the flowmeter.

대표청구항 ▼

A flow sensor for measuring fluid flow comprising: means for issuing a defined stream made up of at least part of said fluid flow; an oscillation chamber having a common inlet and outlet opening, said oscillation chamber being positioned to receive said defined stream through said common opening, sa

A flow sensor for measuring fluid flow comprising: means for issuing a defined stream made up of at least part of said fluid flow; an oscillation chamber having a common inlet and outlet opening, said oscillation chamber being positioned to receive said defined stream through said common opening, said oscillation chamber including: oscillation means for cyclically oscillating said stream back and forth across said chamber in a direction substantially transverse to the direction of flow in said jet; flow directing means for directing fluid from the cyclically oscillated stream out of said chamber through said common inlet and outlet opening; and sensing means for sensing the cyclic variation of the oscillating stream.