2018年3月30日 · The rotameter principle is one of the oldest and most mature principles in flow measurement. The space between the tube and the float is larger at the top to allow more flow through the meter. As gravity works in a vertical orientation, the tube must be oriented vertically.

2019年1月5日 · A typical indication rotameter scale is not linear at about 5%. Differential: An important characteristic of the variable area meter is that the loss of pressure through the float is a constant. The general differential across the meter will increase at higher flow rates due to friction losses through the fittings.

2018年12月26日 · Rotameter type viscometers are used both industrially and in the pilot plant to measure the viscosity of the process fluids and continuously indicate, record or control the process. This type of viscometer is used in a closed flow system Viscometer has been successfully used to maximize combustion efficiency by controlling the viscosity of fuel oils …

2020年7月17日 · Initially shut the valve of rotameter, now start the flow through rotameter. Use a stopwatch when the water starts to fill in the measuring tank. Increase the flow rate gently and repeat the process for different flow rates of water at different float position. What are the types of rotameters. 1 Glass tube rotameter. 2.Metal tube rotameter

2018年3月5日 · Rotameter is a variable area flow meter, works for measuring the flow of low viscous fluid at high velocity. A variable-area flowmeter is one where the fluid must pass through a restriction whose area increases with flow rate. Principle: It works on the principle of upthrust force exerted by fluid and exerted by gravity. The flow …

2022年5月10日 · The rotameter works on the principle of up-thrust force exerted by fluid and force by gravity. The pressure difference across an annular orifice is directly proportional to the square of the flow rate. Working of Rotameter. Rotameter consists of a hollow transparent and tapered glass tube placed vertically in such a way that a larger end is at ...

2023年5月4日 · It is not recommended to utilise the rotameter needle valve for tight shutoff. Installing a hand valve upstream will allow for service or total shutoff of the purge medium as needed. Install a pressure regulator downstream of the cut off valve if the purge supply pressure is significantly variable or exceeds the maximum rating of the rotameter ...

2018年11月15日 · Orifice and venturi meter: Orifice and venturi meter works under the same principle, both meters creates a restriction in the flow channel and the pressure difference across the restriction is measured, which is proportional to …

2023年2月9日 · Formula of Capillary-tube viscometer. η= π r⁴tΔP/ 8lV. where , r = radius of inside capillary;

2023年12月8日 · Explore how viscosity and density analyzers work, from Rotameter viscometers to Vibrating Element Densitometers and Gas Density Measurements. Understand the basic principles for precise measurements. Working principle of Rotameter Type viscometer; Working principle of Density Measurement by Vibrating Element Densitometers