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Flow Measurement

Weirs and Flumes Flow Measurement

S Bharadwaj Reddy
A very different style of variable-area flowmeter is used extensively to measure flow rate through open channels, such as irrigation ditches. If an obstruction is placed within a channel, any

What is a Variable Area flowmeter ?

S Bharadwaj Reddy
An variable-area flowmeter is one where the fluid must pass through a restriction whose area increases with flow rate. This stands in contrast to flowmeters such as orifice plates and

Orifice Drain and Vent Hole

S Bharadwaj Reddy
What is the Purpose of Orifice Drain Hole? Drain hole is a small hole which is provided in the lower region of orifice plate. Drain hole is required in gas

Orifice Tappings

S Bharadwaj Reddy
Several standards exist for pressure tap locations. Ideally, the upstream pressure tap will detect fluid pressure at a point of minimum velocity, and the downstream tap will detect pressure at

Orifice plates

S Bharadwaj Reddy
Of all the pressure-based flow elements in existence, the most common is the orifice plate. This is simply a metal plate with a hole in the middle for fluid to

Square-root characteristics of Differential Pressure Flow Meters

S Bharadwaj Reddy
As discussed earlier, It should be apparent by now that the relationship between flow rate (whether it be volumetric or mass) and differential pressure for any fluid-accelerating flow element is

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