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Velocity measurement with pitot tubes

Velocity measurement with pitot tubes

Velocity measurement with pitot tubes

(OP)
Hi!
I'd like to measure air-flow velocity at the end of the duct(dia 200mm) with pitot tube. (25m/s)
I've found a schematic diagram on a measuring points like 0968*D, 0.865*D...etc...however
but... how can I get its integrals?
Just multiply with sectors?

Let me know any formula or web in detail, please.

Thanks in advance.

RE: Velocity measurement with pitot tubes

The "Industrial Ventilation" describes the method for pitot tube measurement.  You basically take 10 measurements and the average is the duct velocity.  

RE: Velocity measurement with pitot tubes

Do a search on "pitot traverse." You'll find the information you need.

The first hit that came up for me is what HVAC guys use:

http://www.airflow.com/procedur.html

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