In modern industrial process control, accurate and stable flow measurement of gases and liquids is essential for ensuring safety, efficiency, and product quality. Metal tube rotameters (metal tube variable area flowmeters) have become a widely used solution due to their robust structure, simple operating principle, and strong adaptability to harsh working conditions.

Based on the variable area measurement principle, the metal tube rotameter uses a float that moves freely inside a tapered metal tube. As flow rate changes, the position of the float varies accordingly, allowing direct indication of instantaneous flow. This proven design ensures stable performance even under high pressure, high temperature, or corrosive media conditions.

The instrument is suitable for measuring a wide range of media, including gases, liquids, and steam applications under specific conditions. It is commonly used in industries such as chemical processing, oil & gas, water treatment, pharmaceuticals, and metallurgy, where reliable local flow indication is required.

To meet different application needs, the metal tube rotameter is available with both mechanical (pointer and scale) display and modern LCD digital display options. The mechanical version offers simple, durable, and maintenance-free operation for on-site observation, while the LCD version provides enhanced readability, optional signal output (4–20mA, pulse, or RS485), and integration with automation systems.

With its all-metal construction, the device is capable of withstanding high pressure and temperature environments, while offering strong resistance to vibration and corrosion. Various connection types, including flange and threaded options, further enhance installation flexibility across different pipeline systems.

Thanks to its reliability, ease of use, and wide application range, the metal tube rotameter remains a trusted solution for industrial flow measurement, providing stable performance for both gas and liquid media in demanding process conditions.