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Joined: Wed Mar 30, 2011 8:26 am
Posts: 15
I got my orifice bench up and running. I have a friend with a calibration plate that is calibrated for 28".
Is there an accurate way to calibrate my machine at 14" or 16" using that? How do I work the conversion?
Any other suggestions on how I might get real cfm numbers from mine? Aside from going digital..


Wed Apr 15, 2015 1:18 pm
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Joined: Thu Mar 04, 2010 9:01 pm
Posts: 274
The conversion is fairly straight forward, flow is proportional to the square root of the depression so if for example you have a calibration plate that's known to flow 200crm at 28" and you want to know what it would flow at 16" you multiply 200 times the square root of 16/28 which in this particular example works out to 151.2 cfm


Wed Apr 15, 2015 4:45 pm
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Joined: Wed Mar 30, 2011 8:26 am
Posts: 15
Thank You sir.
Very helpful info as usual


Thu Apr 16, 2015 12:23 pm
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