Dear AMMRL users:
We installed a Varian INOVA 500 about 6 months ago and the helium
boil-off rate is faster than we expected. The Oxford magnet is actively
shielded, holds 130 L helium, is in a room at 70F and about 1,500 ft
above sea level in N. California. The flow meter shows a rate of about
23 cc/hr, the level meter is dropping from 100% to about 36% in about 90
days, which is when we are currently doing fills. I would be grateful
to hear of your "real-world" experiences of boil-off rates and fill
intervals to know if our helium consumption is "normal".
many thanks,
Nic Everett, Ph.D.
Chief Scientist, Drug Discovery
American BioScience, Inc.
(530)-889-8833
(530)-889-8824
neverett_at_americanbioscience.com
Received on Fri Feb 18 2005 - 18:42:11 MST