What considerations should be taken into account when selecting a rotameter?

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Methods for flow measurement using rotameters and selection of such instruments: A float meter, also known as a rotameter, is a type of variable-area flow meter. In a vertical conical tube that tapers from bottom to top, the gravity of a float with a circular cross-section is counteracted by the fluid dynamics; the float can move up and down freely within the conical tube. It moves up and down under the influence of flow velocity and buoyancy; once the weight of the float is balanced, the flow rate is transmitted to the dial through magnetic coupling. They are generally divided into glass and metal rotameters. Metal rotameters are the most commonly used in industry. For small-diameter pipelines carrying corrosive media, glass materials are often employed; however, due to the fragility of glass, rotameters with rotors made of expensive metals such as titanium are also used at key control points. 　　Features of rotameters (float flowmeters): Rotameters are one of the most commonly used flowmeters in industry and laboratories. It features a simple and intuitive structure, low pressure loss, and easy maintenance. Rotary flow meters are suitable for measuring the flow rate through a pipe with diameter d