Ultrasonic liquid level monitor

Details Ultrasonic liquid level monitor Ultrasonic liquid level monitor

2006-10-03

2006-10-03

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

C073S29000R

Reexamination Certificate

active

07114390

ABSTRACT:
The present invention includes an apparatus and method for continuous and point level liquid level detection in a closed container or pipe having an inaccessible interior volume such that it is difficult to retrofit these tanks with a level gauge that operates within the storage volume. The invention is based on a frequency domain analysis of the combined storage tank/fluid or pipe/fluid response to localized ultrasonic energy, and can be implemented using several excitation and signal analysis procedures, taking advantage of the transmission properties of the vessel wall in the vicinity of one of its longitudinal thickness resonances. Thus, significantly lower peak excitation voltages are required than with pulse-echo ultrasonic techniques.

REFERENCES:
patent: 2883861 (1959-04-01), Van Valkenburg et al.
patent: 3100885 (1963-08-01), Welkowitz et al.
patent: 3110890 (1963-11-01), Westcott et al.
patent: 3163843 (1964-12-01), Dieckamp
patent: 3447374 (1969-06-01), Cohn et al.
patent: 3603149 (1971-09-01), McKown
patent: 3924454 (1975-12-01), McElroy et al.
patent: 4144517 (1979-03-01), Baumoel
patent: 4280126 (1981-07-01), White
patent: 5065624 (1991-11-01), Fell
patent: 5191795 (1993-03-01), Fellingham et al.
patent: 5303585 (1994-04-01), Lichte
patent: 5400376 (1995-03-01), Trudeau
patent: 5440310 (1995-08-01), Schreiner
patent: 5586085 (1996-12-01), Lichte
patent: 5697248 (1997-12-01), Brown
patent: 5755136 (1998-05-01), Getman et al.
patent: 5767407 (1998-06-01), Sinha
patent: 5793705 (1998-08-01), Gazis et al.
patent: 5799534 (1998-09-01), Van der Pol
patent: 5827943 (1998-10-01), Schmidt
patent: 5836192 (1998-11-01), Getman et al.
patent: 5877997 (1999-03-01), Fell
patent: 5996406 (1999-12-01), Ward
patent: 5996407 (1999-12-01), Hewitt
patent: 6053041 (2000-04-01), Sinha
patent: 6427532 (2002-08-01), Keller
patent: 6644119 (2003-11-01), Sinha
patent: 6889560 (2005-05-01), Sinha
patent: 2003/0015036 (2003-01-01), Young et al.
International Search Report dated Apr. 22, 2005.

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