Ultrasonic phased array for sound drift compensation in gas flow metering

Axel Jäger, Alexander Unger, Han Wang, Yavor Arnaudov, Lei Kang, Riliang Su, Dave Lines, Sivaram Nishal Ramadas, Steve Dixon, Mario Kupnik

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

3 Citations (Scopus)


We present an ultrasonic transit-time gas flow meter (UFM) that features a 40-kHz 8×8 2D-phased array for transmitting ultrasonic sound waves up- and downstream to two single element receivers. This allows us to electronically compensate for the well-known parasitic sound drift effect, resulting in larger measurement range and better signal-to-noise-ratio (SNR). The UFM fabricated consists of a pipe with an inner diameter of 146mm with a flush-mounted 2D-phased array, embedded in a 3D-printed waveguide structure. The configuration was tested in a calibrated flow rig at various gas flow velocities. The received amplitudes without sound drift compensation, i.e. the transmitted waves emitted at beam steering angles of 30° and -30° reduce by 39% and 26%, respectively, when the flow velocity was ramped up to a maximum of 41 m/s. The amplitudes only dropped by 13% in both cases at the maximum flow velocity of 41 m/s when the sound drift compensation was turned on. Our results prove that using a phased-array will significantly increase the measurement range of gas flow meters.

Original languageEnglish
Title of host publication2017 IEEE International Ultrasonics Symposium, IUS 2017
Place of PublicationPiscataway, NJ.
ISBN (Electronic)9781538633830
Publication statusPublished - 31 Oct 2017
Event2017 IEEE International Ultrasonics Symposium, IUS 2017 - Washington, United States
Duration: 6 Sep 20179 Sep 2017


Conference2017 IEEE International Ultrasonics Symposium, IUS 2017
Abbreviated titleIEEE IUS 2017
Country/TerritoryUnited States
Internet address


  • UFM
  • ultrasonic sound waves
  • ultrasonic phased array
  • gas flow metering


Dive into the research topics of 'Ultrasonic phased array for sound drift compensation in gas flow metering'. Together they form a unique fingerprint.

Cite this