Method for measuring liquid cryogen level using a level probe

Details Method for measuring liquid cryogen level using a level probe Method for measuring liquid cryogen level using a level probe

2011-06-28

2011-06-28

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

Thermal type

Reexamination Certificate

active

07966878

ABSTRACT:
A method of measuring a level of liquid cryogen, comprising the steps of immersing a liquid cryogen level probe in a liquid cryogen, applying a propagation current to the heater (26) to induce quench in at least an adjacent part of the superconductive material (22); removing the propagation current from the heater; applying a measurement current to the superconductive material; and measuring (30) a voltage across the superconductive material thereby to determine the level of the liquid cryogen. In articular, the method comprises the steps of monitoring (40) the voltage across the superconductive material while the propagation current is being applied; and ceasing application of the propagation current in response to the detection of a voltage across the superconductive material which exceeds a certain threshold level.

REFERENCES:
patent: 3496773 (1970-02-01), Cornish
patent: 3943767 (1976-03-01), Efferson
patent: 4118984 (1978-10-01), Kuraoka et al.
patent: 1135485 (1968-12-01), None
patent: 2 401 688 (2004-11-01), None
patent: 8-35875 (1996-02-01), None
patent: WO 97/08518 (1997-03-01), None
German Office Action dated Apr. 2, 2008 including English translation (six (6) pages).
International Search Report dated Sep. 26, 2005 and PCT/ISA/237 (Written Opinion of the International Searching Authority) (Thirteen (13) pages).
Great Britain Search Report dated Apr. 27, 2005 (Two (2) pages).

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