IM-P736-02 EMM Issue 3
17
VLM30 In-Line Vortex Flowmeter
Fig. 3 How the Strouhal number is dependent upon the Reynolds number
Consequently, the vortex shedding frequency to be evaluated is dependent solely upon the flow velocity and
not at all upon measuring medium density and viscosity. The local pressure variations induced by vortex
shedding are detected by a piezo sensor and converted into electrical pulses corresponding to the vortex
frequency. The frequency signal from the flowmeter sensor, which is proportional to the flow, undergoes
downstream processing in the transmitter.
Linear flow area
St
Re
To Next Page
Loading...
Need help?
General
