KARMAN VORTEX FLOWMETER ASSEMBLY COMPRISING A FIBER BRAGG GRATING SENSOR AND METHOD TO MEASURE A FLUID FLOW RATE

摘要

An assembly comprising a fluid channel and a flowmeter, the flowmeter (1) comprising at least one vortex shedder (2) extending in the channel (C), ea ch vortex shedder (2) being configured to generate Karman vortices (V) in fl uid flowing through the channel (C) during operation, wherein each vortex sh edder (2) is provided with a first fiber Bragg grating (FBG) of a fiber Brag g grating sensor (3, 7, FBG), wherein a Karman vortex frequency (fe) of the vortices (V) generated by the vortex shedder (2) is detectable utilizing a f iber Bragg grating (FBG) sensor signal relating to the respective first fibe r Bragg grating (FBG) of that vortex shedder (2).