Our magnet came with a braided stainless steel LN2 transfer line which
is attached to a fitting with the same shape as the boil-off heat
exchanger, complete with O-rings. It fits over the turret in place
of the aforementioned exchanger and has a "stinger" that fits into
the fill port. It's a thing of beauty and I never use it. A
tremendous quantity of LN2 boils away cooling the line down before
any liquid reaches the magnet.
Consider this a shout-out to the contributor in the last iteration of
this discussion who advised Tygothane (NOT Tygon!) tubing. I bought
a length of that to replace the latex I was using and I love the
stuff. Highly recommended.
-Steve Peurifoy
Chemistry Department
Millersville University of Pennsylvania
Millersville PA 17551
On 2014/12/02 14:39, Joseph Sachleben wrote:
> Hi All,
>
> I remember a few months ago there was a discussion about liquid nitrogen fills. I have always used latex tubing to connect the nitrogen
> dewar to the magnet. Some of you mentioned that you used stainless steel l-N2 transfer lines to do the fills. The question I have is how
> do you connect the stainless steel transfer line to the magnet.
>
> Thanks,
>
> Joe
>
> Joseph R. Sachleben, Ph. D.
> Technical Director Biomolecular NMR Facility
> The Division of Biological Sciences
> 929 E. 57th St.
> Chicago, IL 60637
>
> (773)834-9866
> jsachleben_at_uchicago.edu
>
>
>
>
>
Received on Wed Dec 03 2014 - 14:18:37 MST