Liquid helium level sensor for use in a cryogenic...

Details Liquid helium level sensor for use in a cryogenic... Liquid helium level sensor for use in a cryogenic...

2005-08-09

2005-08-09

Williams, Herzon (Department: 2856)

Measuring and testing

Liquid level or depth gauge

Immersible electrode type

C073S29000R

Reexamination Certificate

active

06925873

ABSTRACT:
The present invention provides a method and apparatus for measuring the level of a liquid cryogen. The invention provides for use of a current source (52), a length, or multiple lengths, of superconducting filament (40) situated within a cryostat (1) containing a cryogenic fluid (2) and a voltmeter (51) for measuring the voltage drop across the filament (40). The invention further provides a method for using said apparatus.

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