초록 ▼

A method for measuring fluid flow are disclosed. The invention combines isolating flow conditioner technology with ultrasonic technology to determine flow velocity. The method and apparatus of the invention does not require the use of integration techniques or the prior determination of flow swirl o

A method for measuring fluid flow are disclosed. The invention combines isolating flow conditioner technology with ultrasonic technology to determine flow velocity. The method and apparatus of the invention does not require the use of integration techniques or the prior determination of flow swirl or asymmetry to achieve accuracy. The performance of this novel flowmeter exceeds the performance of current ultrasonic flowmeters by an order of four to twelve times and offers significant savings in manufacturing and maintenance costs. The disclosed flowmeter also has self-diagnostic capabilities.

대표청구항 ▼

1. A method for measuring the flow of fluid in a channel, said method comprising the steps of:(a) eliminating flow swirl; (b) eliminating flow asymmetry; (c) measuring transit times of acoustic pulses along at least one chordal path within said non-swirling, axisymmetric flow; and (d) converting sai

1. A method for measuring the flow of fluid in a channel, said method comprising the steps of:(a) eliminating flow swirl; (b) eliminating flow asymmetry; (c) measuring transit times of acoustic pulses along at least one chordal path within said non-swirling, axisymmetric flow; and (d) converting said transit times to a measurement of flow velocity using at least one correction factor that includes a weighting factor based upon geometry of the chordal path and flow turbulence.