Dear All,
As for Andrew Gibbs 2nd point, all Bruker customers who think they
will ever do long vt experiments very far from room temperature should
include this adaptor explicitly on their order and insist on having it
at installation. It not only protects the magnet from a quench, but
will alleviate the problem with shimming varying for a very long time
after you are done with the vt experiment.
Jane
----------------------------------------------------------------------
Dr. Jane Strouse
Director, UCLA Molecular Instrumentation Center
1410 Molecular Sciences Building
Los Angeles, CA 90095-1569
(310)-825-9841 - voice
(310)-825-2280 - fax
strousej@chem.ucla.edu
http://www.mic.ucla.edu
----------------------------------------------------------------------
-----Original Message-----
From: Andrew Gibbs [mailto:andrew.gibbs@bruker.co.uk]
Sent: Thursday, May 22, 2008 9:59 AM
To: ligy; BUM
Subject: RE: vt shim cooling
Hi,
I assume this question has already been answered, but I just thought I'd
throw in my comments for good measure!
1) There is a temperature sensor in the shimset so if you have a concern
you
can check this value and take appropriate action! The example au
program
in the standard release is named 'coiltemp', which runs in the
background
and logs the temperature to a file. For extra safety you could also
think
to modify this program to take action if a temperature range is exceeded
(for example of this try
ftp://ftp.bruker.co.uk/pub/uknmr/auprogs/coiltempmon).
2) If you need one an adaptor is available for Bruker spectrometers that
allows the connection of gas to flow over the shimset. You should
contact
your local Bruker office to get more details and a price!
Best wishes,
Andrew
Dr Andrew Gibbs Phone (+44) 024 7685 5200
Team Leader, NMR Applications Fax (+44) 024 7646 5317
Bruker BioSpin Limited email: andrew.gibbs@bruker.co.uk
Banner Lane
Coventry
CV4 9GH
U.K.
Registered in England and Wales with registration no 923986
Registered office is Banner Lane Coventry CV4 9GH
> -----Original Message-----
> From: ligy [mailto:ligy@mail.sioc.ac.cn]
> Sent: 16 May 2008 18:03
> To: BUM
> Subject: vt shim cooling
>
>
> Dear all,
>
> Varian machines have a cooling system to protect the room
> temperature shim
> unit, which is very useful for a long vt experiment. I dont
> notice such a
> device on our Bruker av500. Is there a similiar cooling
> system on Brukers
> for vt experiments? And what is your solution in practice?
>
> Thank you in advance!
>
> Guangyu
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Guangyu Li
> Manager, Associate Professor
> NMR Facility
> Shanghai Institute of Organic Chemistry
> Chinese Academy of Sciences
> 354 Fenglin Lu
> Shanghai 200032 China
> Telephone: 86-21-54925012
> Fax: 86-21-54925039
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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