The paper presents a new solution of flowmeter to measure the flowing medium velocity using fiber sensing methods. A Mach-Zehnder interferometer is implemented for the detection of vortices [1] [2]. The measurement of flow is based on the vortex frequency detection of a vibrating diaphragm placed in an optimized measuring chamber. The stress of the vibrating diaphragm is measured with use of a Mach-Zehnder (MZ) fiber interferometer whose fiber arms are fixed with the diaphragm. This solution allows for measuring flow of liquids, gases and vapors in the temperature range of -200°C to +550°C and pressures up to 300 bar.

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157AQ (2 June 2014); doi: 10.1117/12.2059697

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)