Pilot Tube, Venturimeter and Orificemeter

Hello,

Pilot Tube: Pilot tube is composed of a circular sectioned tube which has a L-shaped longitudinal profile. The two ends of this L-shaped tube are open.

Pilot tube is used to determine the velocity of flow of a fluid. The method is to put one end of the tube parallel to the flow of the fluid and when the stagnation point is reached, we measure the stagnation pressure.
Pilot Tube   image source: wikipedia

Theory behind the pilot tube is

stagnation pressure = static pressure + dynamic pressure

Venturimeter: This instrument is used to determine the discharge(Q) of the flow of the fluid.

Orificementer: This instrument is also used to determine the discharge(Q) of the flow of the fluid.


Thanks!

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