Do vortex flowmeters generally require a reduction in diameter?
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The vortex flow meter used in one of the horizontal desalinated water pipes at our plant has pipes that are narrower at both the beginning and the end. Why is it necessary to reduce the diameter? Can’t it be installed directly? Also, for measuring demineralized water, which is more suitable: a rotor or a vortex flow meter?
We generally recommend orifice plates, ultrasonic sensors, and turbines to our customers:D
The vortex flow meter is a velocity-type flow meter, and a minimum flow velocity must be maintained; the converging section is used to ensure that the flow velocity meets the requirements of the vortex flow meter for a minimum flow velocity.
The reduction in diameter of horizontal pipelines is due, in part, to allowing the flow meter to fill the pipe, and in part because flow meters with smaller diameters are cheaper. Vortex flow meters are recommended for desalinated water.
The diameter of process pipes is generally chosen to be large; vortex flow meters are selected based on the pipe diameter. At the minimum flow rate, it may not be possible to obtain a reading, in which case the pipe diameter needs to be reduced
It depends on the operating conditions; if the flow rate is too low to meet the requirements of the flow meter, it is necessary to reduce the diameter.
Diameter reduction affects the flow distribution within the pipeline; therefore, vortex flow meters are not suitable for use in situations with diameter reduction. Of course, this is not absolute; if the flow velocity of the medium in the pipeline is too low, or if it is necessary to improve the measurement resolution or lower the minimum measurement value, this can be achieved by reducing the diameter ； To avoid the impact of the reduction in diameter on the fluid distribution within the pipeline, manufacturers will set certain requirements for such reductions or take other measures.
Reduction in diameter is generally done to ensure that the fluid fills the pipe; of course, if the flow meter’s diameter is smaller than that of the pipe, a reduction in diameter is necessary, along with appropriate straight sections before and after it.
It depends on the supplier; some suppliers have their own reduced-diameter vortex flow meters, so there is no need for a reduced-diameter pipe
Reduction is generally not used; it was explained clearly on floor 7: lol