If you would like to be able to monitor the liquid helium level in your cryostat from home or anywhere you have internet access, you should contact Greg Labbe.
Even if you don't want that capability, you should contact me so that you can have a real and working level detector in your cryostat. Not the crap you have been using.
Disclaimer: This offer for internet readability is only valid for residents of Williamson, Microkelvin, CLB, Leigh, the New Physics Building and the Brain Institute.

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Cryogenic Services at the University of Florida in the Department of Physics
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