Under the same conditions, if the flow meter is changed from DN50 to DN80, by how much can the flow velocity increase?
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There is a set of oil transfer hoses with DN100 diameter. Previously, an E+H flow meter with DN50 diameter was used; however, in practice it turned out that this flow meter was too small. We want to replace it with a DN80 flow meter – by how much can the flow rate increase?
It depends on several parameters: the pressure in your pipeline, the distance between the pipes before and after the diameter change, as well as the installation conditions. It also depends on the measurement principle of the flow meter – whether it’s a vortex flow meter, a mass flow meter, or something else; it’s not possible to determine this simply
Under the same conditions, as the diameter of the medium increases, the flow velocity should decrease; what is likely to be of interest is by how much the flow rate increases. It can be roughly calculated based on the difference in the effective passing area.
The flow rate remains basically unchanged, while the velocity decreases
Hello, the pressure loss inherent in DN50 and DN80 flow meters is not very different; an increase in flow velocity has little impact. What’s important is to consider the changes in pressure loss due to the diameter changes before and after the flow meter, as well as the proportion of this loss within the total pressure loss of the entire piping system. In short, it’s necessary to recalculate the pressure loss for the entire piping system.