It belongs to a class of meters called variable area meters, which measure flow rate by allowing the cross-sectional area the fluid travels through to vary, causing a measurable effect. The rotameter consists of a tube and float. The float response to flowrate changes is linear, and a 10-to-flow range or turndown is standard. In the case of OMEGA laboratory rotameters , far greater flexibility is possible through the . It does this, for example, by rising in the tapered tube with an increase in flow until .
The RAKD Rotameter is used for measurement of liquids and gases and is highly accurate, particularly for low flows and high pressure applications. Brooks Instrument explains why to use a rotameter variable area meter to measure flow. Find out how our products can help you measure with precision! Salvador Wernowskimonths ago.
Rotameters are a subset of meters called variable area flow. The interactive transcript could not be loaded. Rating is available when the.
This variable area principle consists of three basic elements: A uniformly tapered flow tube, a float, and a measurement scale. A control valve may be added if flow control is also desired. In operation, the rotameter is positioned vertically in the fluid system with the smallest diameter end of the tapered flow tube at the bottom.
Variable area flow meters work by measuring the flow rate as the fluid travels through a tapered tube where the cross sectional area of the tube gradually becomes greater as the fluid travels through the tube. The term rotameter comes from the early version of the . Working, construction and application of rotameters. The velocity of the flow past the float and the freedom of the float to move vertically enable the meter to clean itself of some buildup of foreign material. Liquids with fibrous materials are one of the exceptions and should not be metered with rotameters. Generally, the size of particle, . Orange Research meters have a bold black tapered pointer, similar to those found on pressure gauges, that easily . Variation in the shape of rotameter floats.
The capacity of the rotameter can be changed by changing the float. Various float configurations . A Rotameter , also called a variable area flow meter, is a device for measuring the flow rate of liquids and gases in pipes. In the measuring tube there is a resistance body, called float, which causes the narrowed cross- section.
The Variable-Area type flowmeter, or Rotameter , is one of the most economical and reliable of flow measurement instruments.
In various configurations flow meters can be designed to withstand high pressures, corrosive fluids, high temperatures, and is completely independent of factors influencing . Browse online, or one of our Applications Engineers can help you choose the right product for your application. Rotameter definition, an instrument for measuring the rate of flow of a liqui consisting of a tapered vertical tube in which a small float is forced upward until its weight balances the fluid force. Take the rotameter to the field and use it to check the flowrate.
A rotameter must be in the vertical position to measure properly. If the “ final” flowrate is .