AMMRL: Communication between Cryoprobe compressor and Vacuum Pump

From: Reza Pouremad <rpouremad_at_gmail.com>
Date: Tue, 13 Dec 2011 20:53:47 -0500

Greetings All,


One of our older Varian (Agilent) 600 Mhz Spectrometers here at Harvard
Medical School, is equipped with a first generation "Chili Probe" with a
stand-alone vacuum pump that does not electronically communicate with the
cryobay or the compressor. This means that if, or when, the vacuum is lost
the compressor will remain operational and a "warm-up" is not initiated,
which would be quite problematic. One logical approach to solving this
problem would be to install some kind of a sensor in the vacuum line that
could send a signal to the computer, equivalent to pushing the "warm-up"
button, in case the vacuum is lost.

If you have encountered a similar situation or simply have a good
suggestion, I'd appreciate your feedback.



Thanks,

Reza




Reza Pouremad, Ph.D.
NMR Specialist
BCMP, Rm C-102
Harvard Medical School
240 Longwood Ave
Boston, MA 02115
339-222-1393
Received on Tue Dec 13 2011 - 15:53:54 MST

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