Abstract
The invention regards a flow meter for ultrasonically measuring the flow velocity of fluids comprising a duct having a flow channel with an internal cross section comprising variation configured to generate at least one acoustic resonance within the flow channel for a specific ultrasonic frequency, and at least two transducers for generating and sensing ultrasonic pulses, configured to transmit ultrasonic pulses at least at said specific ultrasonic frequency into the flow channel such that the ultrasonic pulses propagate through a fluid flowing in the flow channel, wherein the flow meter is configured to determine the flow velocity of the fluid flowing in the flow channel based on a change in transit time, phase and/or pulse such as amplitude and/or form, of the ultrasonic pulses.
| Original language | English |
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| IPC | G01F 1/ 66 A I |
| Patent number | WO2015063079 |
| Filing date | 07/05/2015 |
| Country/Territory | International Bureau of the World Intellectual Property Organization (WIPO) |
| Priority date | 28/10/2013 |
| Priority number | EP20130190423 |
| Publication status | Published - 7 May 2015 |