Seeking advice on selecting a flow meter for low flow rates
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This post was last edited by Wandering Dawn on 2022-5-24 06:57. Dear seniors and colleagues: Hello! Please help recommend a suitable flow meter, and also help analyze the limitations of conventional flow meters. Temperature: Room temperature ； Pressure: -0.1, density: 1300, minimum flow rate: 0.0054 m3/h, normal flow rate: 0.009–0.018 m3/h, maximum flow rate: 0.026 m3/h. The medium contains suspended solids, so corrosion protection is required (PTFE or tantalum). Thank you!
Choose a mass flow meter with a small diameter
If high precision is not required, a rotameter can be used.
It’s difficult to measure low-flow rates with suspended solids. It is recommended to use a rotor and turbine. It depends specifically on the size and characteristics of the suspended particles; if they can cause material buildup or wear on the measuring components, it becomes very difficult to choose the right option.
This flow range usually requires a rotameter； The ability of plug-type rotors to resist suspended solids is stronger than that of float-type ones, but it depends on the size of the suspended solids. .
Rotor corrosion protection seems unsuitable for vacuum
It’s mainly a vacuum environment; to prevent corrosion, special materials have to be used
It is recommended to consider using a metering pump for direct measurement and adjustment