Dear all,
During the holidays, the manostat(?) on our Inova stopped working. This
device takes the helium boil off as input and output the boil-off to the
helium boil-off meter on the magnet leg. The front LCD kept flashing
very fast rather than displaying the pressures, and I can hear fast
clicking sound inside this device which seems to be synchronized with
the LCD flashing. The helium boil-off meter on the magnet leg kept open
and close, presumingly there is a valve in the manostat kept repetitive
opening and closing. This device is made by Bronkhorst HIGH-TECH, with
Serial Number 99206487S, and Type E-7100-AAA.
I am contacting Varian, but if anyone has seen such problems, I would
like to know what the cause might be and whether there is any easy way
to fix. I have not opened the box yet, but I assume it is a solenoid
valve or a pressure sensor that might go bad.
Thanks and you have a have a happy new year.
Regards,
Wei Li
--------------------------------
Wei Li, Ph.D.
Associate Professor and Director of NMR Facility
University of Tennessee Health Science Center
847 Monroe Avenue, room 327A
Memphis, TN 38163
901-448-7532 (PH) 901-448-6828 (Fax)
http://www.utmem.edu/pharmacy/pharmsci/faculty/wli/
Email: wli_at_uthsc.edu
Received on Mon Jan 04 2010 - 12:07:47 MST