Help - Flow of Dry Nitrogen through orifice

[PatCon]

Folks - I am searching for a simple table or calculation to find the cfm of dry nitrogen through an small orifice (.25"). Can anyone point me in a direction of post a formula? Thanks!

 

[israelkk]

http://www.theleeco.com/EFSWEB2.NSF/Engr!OpenView

Is a good source from the Lee Company engineering site at:

Select: 196 Lohms versus orifice size
which will bring you to:

http://www.theleeco.com/EFSWEB2.NSF...914e25a54307a1ef852565d10076410c!OpenDocument

From here calculate the Lohms of 0.25" orifice.

Return to the first link and select: 208 Lohm Calculator for Gasses
which brings you to:

http://www.theleeco.com/EFSWEB2.NSF/airlohms.htm!OpenPage

From here calculate the nitrogen flow rate using the Lohms calculated from the previous link.