I searched around my lab here but did not find anything that looks like that
tool. Do you all remember that you should receive this tool when Bruker
first does the installation and purchased the Helium transfer line? Or you
need to purchase it. I have three magnets, three transfer lines but find
no tools like that in the lab.
I 'inherited' the helium transfer line so I have no idea the history of the
tool.
Thanks and look forward to hearing back from you.
Sincerely,
Jimmy (Zhenming)
******************************
Jimmy (Zhenming) Du, Ph.D.
Director of NMR Facility
Senior Research Scientist
Adjunct Assistant Professor
UPS Shipping Address:
50 Decatur St, Room 262
Natural Science Center
Georgia State University
Atlanta, GA 30302-3965
Mailing Address:
Department of Chemistry
P.O.Box 3965
Georgia State University,
Atlanta, GA 30302-3965
Phone: 404-413-5538
Email: zdu_at_gsu.edu<mailto:zdu_at_gsu.edu>
Website: http://sites.gsu.edu/zdu/
________________________________
> From: main_at_ammrl.groups.io on behalf of Todd Rappe via groups.io
> Sent: Thursday, July 31, 2025 3:18 PM
> To: main_at_ammrl.groups.io
> Subject: [External] Re: [AMMRL] Helium Transfer Lines - Refreshing vacuum. #poll-notice
Replying to Bob:
Different transfer lines have different fittings. The tool I posted is for
the type of transfer line pictured below. For the ones with the KF fitting,
you can just remove the nut and clamp on to a vacuum line.
_____________________________________
Todd Rappe
Minnesota NMR Center <nmr.umn.edu>
612-625-9147 (office)
651-321-TODD (rings office and mobile)
612-624-8892 (magnet lab)
On Thu, Jul 31, 2025 at 1:38 PM Bob Berno via groups.io wrote:
Hmm.
I'm not sure that's the tool you mean.
That looks like the valve you connect to the magnet vacuum port, either when
you are installing the magnet, or if you have de-energized the magnet and
want to break vacuum.
On Thu, Jul 31, 2025 at 12:25 PM Alvaro Herrera via groups.io wrote:
Anyone has picture of those "pieces" I would like to see if we have some.
Thanks,
Alvaro Herrera Ph.D.
NMR Center Director
Chemistry & Biochemistry Department
Auburn University
________________________________
> From: main_at_ammrl.groups.io on behalf of Kenneth Sharp-Knott via groups.io
> Sent: Wednesday, July 30, 2025 11:26 AM
> To: main_at_ammrl.groups.io
> Subject: Re: [AMMRL] Helium Transfer Lines - Refreshing vacuum. #poll-notice
Just to follow-up... The reason I ask is the engineer mentioned that most people
wait far too long. By the time you see evidence of it having gone soft, you
have likely been losing quite a bit of helium due to excessive boiloff for
some time.
Apparently most transfer lines also come with the necessary equipment to pump
it down. They were some of the bit and pieces lying around the lab that I
had no idea of the purpose.
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Received on Fri Aug 01 2025 - 08:27:22 MST