Metallic tube variable area flowmeter is widely used Posted by : admin / Posted on : Nov 11， 2022

The metallic tube variable area flowmeter is a type of flow meter used to measure the volumetric flow rate of liquids or gases. It consists of a tapered metal tube with a float at the end. The float is attached to the end of the metal tube by a magnetic coupling system, and its position is transmitted to a scale where the flow rate can be read directly.

The metallic tube variable area flowmeter is simple and highly accurate. Its design makes it a practical choice for many applications. It is easy to install, offers wide measuring range, and is pressure safe. It is also easy to read. Its wide application field makes it a great choice for process fluid measurement.

Rotameters are generally self-cleaning devices. This is due to the fact that the fluid flowing between the wall of the tube and the float tends to scour the flow area, preventing foreign particles from building up. However, it is still recommended that the fluid used with this type of meter is clean and without large particles.

These devices are very popular and widely used in many fields. They are used in national defense, the chemical and petroleum industries, metallurgy, electrical power, and environmental protection. They are also used for gas and liquid flow measurement. Its low flux density makes it ideal for low flow applications, such as slurries. The reduced flux density also discourages the accumulation of magnetic particles, which can cause meter indication errors. They also do not have float extensions, which is one of the most common causes of damage.

Rotameters can be manufactured with high operating pressures, and they can handle strong chemicals and corrosive fluids. These meters are also compatible with deionized water. Usually, they are calibrated to within 0.50% AR over a 4:1 range. Industrial rotameters have an error margin of 1-2%. They also feature a manual setting function, so that they can be set by hand to achieve the desired flow rate.

Although viscosity can affect flow measurements, most rotameters are relatively insensitive to these effects. The exception to this rule is the small ball float variety, which is more sensitive to viscosity variations. The larger the rotameter, the less sensitive it will be to viscosity. Manufacturers publish guidelines on the viscosity limits of their instruments.