air flow measurements

[Tom Cloud]

>> Some of you guys here work with flow benches or other
>> flow measurement devices.  I have a question .... how are
>> they calibrated?  Or, how could one set up his own flow
>> measurement system and know it's somewhat accurate?
>> 
>> My twisted mind envisions a venturi and manometer (that's
>> cause that's what we used in 1962    8^)
>> 
>> Tom Cloud <cloud at peaches.ph.utexas.edu>
>> 
>
>And an old blower driven by a variable speed DC motor. . .

actually, I had in mind an old vacuum cleaner with a phase
controller (light dimmer) ..... but how calibrate it for
cfm??

Tom Cloud <cloud at peaches.ph.utexas.edu>