Pitot Probes (IMAGE)

National Institute of Standards and Technology (NIST)

Pitot Probes

Caption

NIST designed two new pitot probes (left and center), one whose sensing surface is cone-shaped and the other whose surface is hemispherical. The probes have five holes, or ports. Comparing pressure readings obtained in each of the five ports allows technicians to calculate the flow rate. An older type of pitot tube, called an S-probe (right), has two ports that face in opposite directions.

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NIST

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