A rotameter is a device that measures the volumetric flow rate of fluid in a closed tube. It belongs to a class of meters called variable-area flowmeters, which measure flow rate by allowing the cross-sectional area the fluid travels through to vary, causing a measurable effect. See more The first variable area meter with rotating float was invented by Karl Kueppers (1874–1933) in Aachen in 1908. This is described in the German patent 215225. Felix Meyer founded the company "Deutsche … See more A rotameter consists of a tapered tube, typically made of glass with a 'float' (a shaped weight, made either of anodized aluminum or a ceramic), inside that is pushed up by the See more • Due to its reliance on the ability of the fluid or gas to displace the float, graduations on a given rotameter will only be accurate for a given substance at a given temperature. The main property of importance is the density of the fluid; however, viscosity … See more • A rotameter requires no external power or fuel, it uses only the inherent properties of the fluid, along with gravity, to measure flow rate. See more • Thorpe tube flowmeter See more • Rota Yokogawa GmbH & Co. KG: Rotameter measuring devices • Rota Yokogawa GmbH & Co. KG: Company history of the founder of Rotameter See more WebMay 2, 2024 · May 4, 2024 at 20:22. The characteristic length for a small object (such as a sphere) is sqrt (A). If you take velocity as volumetric flow rate / area then the Re = Q/ (vsqrt (A)), with Q as flow rate and v as kinematic viscosity of water. This can be solved for A in terms of the Reynolds number, A = (Q/ (vRe))^2.
Rotameter - an overview ScienceDirect Topics
WebA rotameter measures the flow of liquids, gases and steam by using a float inside a conical tube. The rotameter principle is one of the oldest and most mature principles in flow … Webglass tube rotameter for gas/liquid measurement. $50 - $1,000 / Unit; Min.Order: 10 Units; Xian Qin Wei Instrument Factory. Contact Now. ... DK80 Low cost glass tube rotameter flow meter for tiny flow measurement. $60 - $85 / Unit; Min.Order: 2 Units; Shenyang Beixing Meter Manufacture Co., Ltd. 0YRS. little currency
Working of Rotameter / Variable area flowmeter - Flow Measurement …
WebRotameters are simple, reliable and inexpensive flow measuring instruments. As a gas or liquid is introduced into a uniformly tapered flow tube a float rises, its weight supported by the fluid flowing underneath, until the entire volume of fluid can flow past the float. WebThe rotameter principle of operation is a mechanical means of flow measurement. They measure flow using a float that is able to move freely up and down within the flow tube. The buoyancy force acting on the float, the flow resistance, and the weight of the float itself are all in equilibrium. WebOct 11, 2024 · Introduction to Flow Measurement with Rotameters. The main application of the rotameter flow meter is to measure the flowrate of liquids and gases. It is composed of a plastic, metal or glass tube and float. The float response to flowrate changes is linear, and a 10-to-1 flow range or turndown is standard. The OMEGA™ laboratory rotameters ... little curly red headed witch