I am curious to know who has the longest surviving magnet without a rebuild.
We rebuilt our 400 Bruker Avance system after 14 years for no better reason
except that we got the deal as part of a new instrument purchase.
15 to 20 years seems to be a reasonable expectation for the seals.
Gopal Subramaniam
Queens College, CUNY
Flushing, NY 11367
-----Original Message-----
From: Zhang, Weixing [mailto:Weixing.Zhang_at_STJUDE.ORG]
Sent: Tuesday, June 09, 2009 12:37 PM
To: ammrl_at_ammrl.org
Subject: AMMRL: When the magnet seal should be replaced?
Hello everybody:
We have two 600 MHz magnets and both of them are over 10 years old.
I heard that the seal will age and need to be replaced at certain time.
I would like to know:
At what condition (e.g. He/N hold time, boil off rate) the seal must be
replaced?
What is the longest time that the seal can last?
Thanks,
Weixing Zhang
St. Jude Children's Research Hospital
262 Danny Thomas Blvd
Memphis, TN 38105
(901)595-3169
Email Disclaimer: www.stjude.org/emaildisclaimer
Received on Fri Jun 12 2009 - 08:29:23 MST