Helium boil off rate
Zennie, Thomas (Thomas.Zennie@wl.com)
Tue, 17 Feb 1998 17:13:50 -0500
At an atmospheric pressure of 29.53 inches (750 mm Hg) my helium boil
off rate has gone sky high. Typicaly it's usually about 3-4 ml/hr L He
and now it's registering at 20. Is this too high for the local
barametric pressure? I am aware that Helium boil off is an indication of
barometric pressure but I'm concerned that maybe I've got a problem?
This is for a Unity 400 with an Oxford magnet.
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Dr Thomas M. Zennie
Parke-Davis Pharmaceuticals
Analytical Development
188 Howard Ave
Holland, Michigan 49424
email: thomas.zennie@wl.com
phone 616-392-2375 ext 2423
fax 616-392-8916