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Flow Measurement

Standardized Volumetric Flow

S Bharadwaj Reddy
The majority of flowmeter technologies operate on the principle of interpreting fluid flow based on the velocity of the fluid. Magnetic, ultrasonic, turbine, and vortex flowmeters are prime examples, where

Particle Image Velocimetry (PIV) Principle

S Bharadwaj Reddy
Particle image velocimetry (PIV) is an optical method of flow visualization used in education and research. It is used to obtain instantaneous velocity measurements and related properties in fluids. The fluid is seeded with tracer particles which, for sufficiently small particles, are assumed

Optical flow meter Principle

S Bharadwaj Reddy
A relatively recent development in industrial flow measurement is the use of light to measure the velocity of a fluid through a pipe. One such technology referred to as Laser-Two-Focus

What is a Ultrasonic flow meter ?

S Bharadwaj Reddy
Ultrasonic flowmeters measure fluid velocity by passing high-frequency sound waves along the fluid flow path. Fluid motion influences the propagation of these sound waves, which may then be measured to

What is a Positive displacement flow meter ?

S Bharadwaj Reddy
A positive displacement flowmeter is a cyclic mechanism built to pass a fixed volume of fluid through with every cycle. Every cycle of the meter’s mechanism displaces a precisely defined

What is a Weigh Feeder ?

S Bharadwaj Reddy
A special type flowmeter suited for powdered or granular solids is the weighfeeder. One of the most common weighfeeder designs consists of a conveyor belt with a section supported by

What is a Magnetic flow meter ?

S Bharadwaj Reddy
When an electrical conductor moves perpendicular to a magnetic field, a voltage is induced in that conductor perpendicular to both the magnetic flux lines and the direction of motion. This

What is a Paddlewheel flow meter ?

S Bharadwaj Reddy
A variation on the theme of turbine flow measurement is the paddlewheel flowmeter, a very inexpensive technology usually implemented in the form of an insertion-type sensor. In this instrument, a

What is a Turbine flow meter ?

S Bharadwaj Reddy
Turbine flowmeters use a free-spinning turbine wheel to measure fluid velocity, much like a miniature windmill installed in the flow stream. The fundamental design goal of a turbine flowmeter is

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