Live Sike Workshop --- Venturi Meter Manufacturing
2019-05-24
Venturi Meter are used to measure the velocity of flow of fluids in a pipe. They consist of a short length of pipe shaped like a vena contracta, or the portion with the least cross-sectional area, which fits into a normal pipe-line. The obstruction caused to the flow of liquid at the throat of the venturi produces a local pressure drop in the region that is proportional to the rate of discharge. This phenomenon, using Bernoullis equation, is used to calculate the rate of flow of the fluid flowing through the pipe.
Venturi Meters have the following characteristics:
Theoretically there is no restriction to the flow down the pipe.
They can be manufactured to fit any required pipe size.
The temperature and pressure within the pipe does not affect the meter or its accuracy.
There are no moving parts.
Unfortunately the accurate shape required of the inside of the meter makes them relatively expensive to manufacture.