How Does An Orifice Plate Work?

Answer

An orifice plate is used to measure the volume of flow of a liquid or gas through a pipe. The orifice plate works by forcing the liquid through a small hole in a plate that is placed inside the pipe. As the liquid is forced through the small hole, it changes velocity and pressure. The change in velocity and pressure is compared to the original velocity and pressure of the liquid and the difference is what is considered to be the volume of flow.
1 Additional Answer
An orifice plate is used for measuring the rate of the fluid flow. As the fluid flows through the pipe it gradually builds up velocity and pressure. You can find more information at en.wikipedia.org
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