Date: Mon, 5 Oct 2015 15:48:51 -0700
If all suggest tricks failed, I am not sure the depth gauge will come up with the upper barrel while removing it from the magnet.
At least, on all my Bruker systems, upper barrels are almost straight through barrels with spinning sensing led’s near the bottom of the upper barrel. Not only that the position mark on the upper barrel is closely set to reflect the center of the magnet for the RT shim coil, the cryoshim values of the magnet during the initial installation were also closely related to the orientation of the RT shim orientation.
I had few similar accidents years ago with the depth gauge problem, as well as broken NMR tubes in the probe, I always ended up removing the probe, lower the RT shim coil to resolve the issues. One has to be very careful to make sure the RT shim coil come straight down from the bore, and almost touch the floor. You will find the depth gauge sitting right on top of the RT shim coil then. One can also use this chance to clean the top of the RT shim bore where the spinner sits.
Best,
Dee
Dee-Hua Huang, Ph.D., Director
Research Service NMR Facility, BCC-153
The Scripps Research Institute
10550 N. Torrey Pines Road
La Jolla, CA 92037
(858) 784-2329
From: "Plant,Daniel" <dan_at_mbi.ufl.edu<mailto:dan_at_mbi.ufl.edu>>
Date: Friday, October 2, 2015 at 12:42 PM
To: "Harker,Robert A" <rharker_at_chem.ufl.edu<mailto:rharker_at_chem.ufl.edu>>, Robert Honeychuck <rhoneych_at_gmu.edu<mailto:rhoneych_at_gmu.edu>>, AMMRL <ammrl_at_ammrl.org<mailto:ammrl_at_ammrl.org>>
Subject: RE: AMMRL: Gauge in magnet
Also, for the future, Brukers new gauge has a flange at the top to prevent this from happening…
If you get a 5mm od plastic rod and insert it in an old spinner, then wrap a little tape around the bottom of the spinner to make a snug fit when you push it into the gauge, you might be able to just pull it out from the top…
When all else fails, pull the upper barrel…
From: Harker,Robert A [mailto:rharker_at_chem.ufl.edu]
Sent: Thursday, October 01, 2015 2:02 PM
To: Robert Honeychuck <rhoneych_at_gmu.edu<mailto:rhoneych_at_gmu.edu>>; ammrl_at_ammrl.org<mailto:ammrl_at_ammrl.org>
Subject: RE: AMMRL: Gauge in magnet
Bob;
I thought a post-doc dropping a sample without a spinner ... making a hole in one, thus smashing the probe was bad. This takes the prize for stupid human tricks.
Can you fish it out with string or wire?
Thanks for sharing,
[cid:image001.jpg_at_01D0FD29.038A34E0]<http://chem.ufl.edu/~nmr>
ROBERT A. HARKER
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University of Florida
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-----Original Message-----
From: Robert Honeychuck [mailto:rhoneych_at_gmu.edu]
Sent: Wednesday, September 30, 2015 3:19 PM
To: ammrl_at_ammrl.org<mailto:ammrl_at_ammrl.org>
Subject: AMMRL: Gauge in magnet
A user put the gauge and sample into my DRX 400. The sample came up but the gauge didn't. After I removed the probe I tried pushing up from the bottom with stiff plastic air line but I think the natural bend in the air line is causing it to get lodged on the shelf and not get to the center where the gauge is. Pushing up with Tygon has the same bend problem.
Thank you in advance.
Bob Honeychuck
George Mason U
Fairfax Virginia USA
rhoneych_at_gmu.edu<mailto:rhoneych_at_gmu.edu>
(image/jpeg attachment: image001.jpg)