Vortex Flowmeter

Hi,
Can anyone please elaborate why vortex flow meter is limited upto 450 deg C of process fluid? Also, what min fluid velocity is required for vortex to work?
 
Typically the temperature limiting factor is the piezoelectric crystal which registers the each vortices. The velocity minimum is dependent upon several factors. I'd recommend using a sizing program for your specific application to determine minimum velocity. Our free web-based sizing program is located below.

https://vortek.sizingapp.com/#
 
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