I sent you an email of a presentation I put together awhile back on TESP testing.
Originally Posted by ga-hvac-tech
I would post it here, but I don't post technical info or manuals, in this "OPEN" forum.
If anyone else wants it, send me an email (address is in my profile).
Using a pitot tube in a residential application not only requires you to do math in public, but will require alot of straight duct, before and after the pitot tube, to get an accurate reading.
Even using the smaller static probes can give inaccurate readings because of turbulent airflow.
Instead of learning the tricks of the trade, learn the trade.