A rotameter or variable area flow meter is an industrial flow meter that measures the volumetric flow of liquids and gases. There is no difference between a rotameter and a flow meter, and …

Rotameters are a type of variable area flow meter and provide constant flow rate measurement and switching capabilities.

Variable area (VA) flow meters, or rotameters, are some of the oldest devices used for flow measurement, known for their flexibility across various applications and high reliability.

What is a Variable Area Flow Meter? A variable area flow meter (Figure 1) is a type of differential pressure (d/p) flow meter. Variable area flow meters are simple and versatile devices that …

Oct 30, 2024 · Blue-White® Variable Area Flow Meters (rotameters) measure the volumetric flow of liquids. They have an orifice and a float that can move vertically inside a tube with an …

A variable area flowmeter – also known as VA meter or rotameter – consists of an upright, tapered measuring tube with the wider end at the top. This tube contains a specially shaped …

Rotameters are also known as variable area flow meters. Variable area flow meters work by measuring the flow rate as the fluid travels through a tapered tube where the cross sectional …

The rotameter is the most widely used variable area flowmeter because of its low cost, simplicity, low pressure drop, relatively wide rangeability, and linear output.

Jul 15, 2015 · The most common design of variable area meters is the cone-and-float type, which is also known as a rotameter. The basic design of a variable area meter is a tapered tube …

Jun 11, 2025 · The rotameter is a classic type of variable area flow meter characterized by its simple, transparent tapered tube and float design suited for visual flow indication in moderate, …