(1) Vortex flowmeters are not suitable for low Reynolds number (ReD ≤ 2 * 104) measurements, and are limited in applications with high viscosity, low flow rate, and small diameter.
(2) The instrument with vibration resistance should be selected in the place where the pipe has vibration.
(3) The stability of the vortex separation is affected by the distortion of the flow velocity distribution and the swirling flow. The straight pipe section of sufficient length should be configured according to the different types of chokes on the upstream side. Generally, the length of the straight pipe section of the throttling differential flowmeter can be referred to. installation.
(4) The instrument is still lacking test data in the application of pulsating flow and mixed phase flow.
(5) Compared with the turbine flowmeter, the meter factor is low, the resolution is low, and the larger the diameter, the lower the diameter, generally applied to small and medium diameters (DN25~DN300).
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