Just add a gas presure switch (relay) to the heating power output of the
VT temperature controller. Omega Engineering sells various models of such
pressure switchs. The cheapest one costs only $30.
Jincheng Xiong
Department of Chemistry
Colorado State University
Fort Collins, CO 80523
(970)4916455
jincheng@lamar.colostate.edu
On Sun, 23 Nov 1997, Feng Qiu wrote:
> Hello, all,
> The question is that is there a way to protect the probe when VT air is
> off in the middle of experiment. For example, If a exp running during
> weekend, use temp control at 30 degree. The power is off for a few
> minutes, the instrument will continue running because the UPS, but air
> compressor will not run except someone start them again. This mean the
> heat in the probe will continue heating without VT air. I believe this
> will cook the probe. What is the solution for this potential problem?
> Feng Qiu
> --
> ==============================================================
> | Feng Qiu, Ph..D. Department of Chemistry |
> | Manager of NMR Facility Oklahoma State University |
> | Office: 405-744-4308 Stillwater, OK 74078-3071 |
> | FAX: 405-744-6007 mailto:fqiu@biochem.okstate.edu |
> | http://nmrserv.chem.okstate.edu/ |
> ==============================================================
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