What is the difference between rotary flow meters used for measuring liquids and those used for measuring gases?
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What is the difference between rotary flow meters used for measuring liquids and those used for measuring gases?
The main difference lies in the rotor: gas rotors are made of materials with a lower density, while liquid rotors are typically made of materials with a higher density. In terms of measurement, gases are more affected by temperature and pressure, whereas liquids are affected to a lesser extent.
Actually, the difference isn’t significant; the rotameters we purchase here can be used for both gases and liquids
Rotary flow meters, whether used for measuring gases or liquids, are basically identical in structure, consisting of a rotor placed inside a conical tube. But there are still some differences. 1. Density considered for the rotor: a higher density is used for liquids, while a lower density is suitable for gases. 2. Shape of the rotor: liquids have a relatively smaller cross-sectional area, whereas gases have a relatively larger one. 3. Damping mechanism: it isn’t necessary for liquids, but it’s generally advisable to use a damping mechanism for gases, as this helps to ensure stable measurement results.