Averaging pressure with a pitot tube and then converting into velocity will give an incorrect result. An averaging pitot tube is designed with manifold impact and static pressure ports. Averaging pitot tubes cost somewhat extra and offer better accuracy as compared to single port pitot tubes. How To Use Pitot Tube Velocity. 4:00 PM: File. 1 ASGMT / Averaging Pitot Tube Flow Measurement Michael Montgomery – Marketing Product Manager – Rosemount Inc. Russ Evans – Manager of Engineering and Design. Product Specification Sheet -4809, Rev AA December 2002 2 OVERVIEW This Product Specification Sheet defines the requirements for Averaging Pitot Tubes. Averaging Pitot tube is a multiport self averaging flow meter. It is a primary element for flow measurement of gas, liquid, vapour in pipelines.

The Pitot tube is named after Henri Pitot who used a bent glass tube to measure velocities in a river in France in the 1700s. Pitot tubes can be very simple devices with no moving parts used to measure flow velocities. Pitot tubes are a common type of insertion flowmeter. The below animation shows the basics for a Pitot tube, where a pressure is generated in a tube facing the flow, by the velocity of the fluid. Pdf Xchange 2012 Pro 5 Serial. This ‘velocity’ pressure is compared against the reference pressure (or static pressure) in the pipe, and the velocity can be determined by applying a simple equation. Note: In Animation from right to left: The tube inserted in the center of the pipe is used to measure Total Pressure and the next second tube is used to measure the static pressure. When the flow rate through the pipe changes, the pressures at the total pressure tube and static pressure tube varies with respect to the flow velocities.