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A novel gas flow sensor based on sound generated by turbulence [and spirometry application]

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3 Author(s)
Rabbani, K.S. ; Dept. of Phys., Dhaka Univ., Bangladesh ; Islam, S. ; Alam, S.

A novel gas flow sensor has been developed based on the sound produced by turbulence that is created by a small obstruction placed in the path of the flow. A microphone placed behind the obstruction gives an electrical output which is conditioned and calibrated for flow rate. The sensor has no moving parts making it robust. A computerised system with appropriate data correction is being developed for spirometry using this sensor

Published in:

Instrumentation and Measurement Technology Conference, 1997. IMTC/97. Proceedings. Sensing, Processing, Networking., IEEE  (Volume:2 )

Date of Conference:

19-21 May 1997