DEVELOPMENT OF PHOTONIC VORTEX FLOW METER FOR FLOW RATE MEASUREMENTS AT HIGH TEMPERATURES AND PRESSURES

Henrik Krisch, Ali Gedikli, Ernst von Lavante, Pouya Mirzaei
Abstract:
The present publication describes a new design of a flow meter for metering fluids using fiber sensing methods. Mach-Zehnder interferometer was implemented for the detection of the vortices. The signal generation is based on the frequency detection of a vibrating diaphragm placed in a specially optimized measuring chamber. The stress of the vibrating diaphragm is sensed using a Mach-Zehnder (MZ) fiber interferometer, with fiber arms fixed to the diaphragm. This solution allows measuring flow rates of liquids, gases and vapors with temperatures up to +700°C and pressures up to 300 bar. Excellent linearity was achieved by numerical flow simulations of the entire meter. The pressure chamber was optimized to minimize the amount of air trapped in it.
Keywords:
flow measurement, fibre optic sensors, fiber interferometer, pressure and stress sensors, vibrations, membrane, diaphragm, vortex flowmeter
Download:
IMEKO-WC-2015-TC9-221.pdf
DOI:
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Event details
Event name:
XXI IMEKO World Congress
Title:

Measurement in Research and Industry

Place:
Prague, CZECH REPUBLIC
Time:
30 August 2015 - 04 September 2015
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