Rotameter is a type of flow meter that is commonly used in laboratory applications to measure the flow rate of liquids or gases. It consists of a tapered tube, typically made of glass or plastic, with a float inside that is free to move up and down in response to changes in flow rate.
As the fluid flows through the tube, the float rises or falls depending on the rate of flow. The position of the float is then read off a scale marked on the side of the tube, allowing the user to determine the flow rate of the fluid.
Rotameters are often used in applications where accurate flow measurement is required, such as in chemical processing, water treatment, and food and beverage production. They are easy to install and use and can measure flow rates ranging from a few milliliters per minute to several hundred liters per minute.
In addition to their accuracy and versatility, rotameters are also relatively low cost compared to other types of flow meters, making them a popular choice for many laboratory applications. However, they do have some limitations, such as being sensitive to changes in temperature and pressure, and requiring periodic calibration to ensure accuracy.