Pressure Sensor for Flow Bench

[bamcknig at postoffice.syspac.com]

Garfield

Put your differential pressure gauge(sensor - manometer) across the 
orfice and look it up in the table.  You know the size of the orfice, 
the delta pressure, and the medium - Air.  you can determine the flow 
in the look up tables that you glue next to the manometer.

Bob McKnight
Phx AZ

Ps Its been 40 years since I did this so I may have omitted something 
or else the physics may have changed.