Measuring and testing – Liquid level or depth gauge
Reexamination Certificate
2005-07-26
2005-07-26
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid level or depth gauge
C340S620000, C340S621000, C340S612000
Reexamination Certificate
active
06920787
ABSTRACT:
The invention relates to a device for determining and/or monitoring the level of a filling material in a container. According to the invention, an oscillatable unit is provided which is fastened to a membrane, whereby said oscillatable unit is mounted at the height of the predetermined level. An emitting-receiving unit is provided which, with a given emit frequency, causes the membrane and the oscillatable unit to oscillate, and which receives the oscillations of the oscillatable unit. A control/evaluation unit is provided, which identifies once the predetermined level is obtained upon a given change in frequency or which, with the aid of the oscillation frequency of the oscillatable unit, determines the density of the filling material.
REFERENCES:
patent: 3625058 (1971-12-01), Dress et al.
patent: 5743134 (1998-04-01), Dreyer
patent: 5844491 (1998-12-01), Getman et al.
patent: 5966983 (1999-10-01), Pfeiffer et al.
patent: 6138507 (2000-10-01), Getman et al.
patent: 6644116 (2003-11-01), Getman et al.
patent: 4429236 (1996-03-01), None
patent: 0875740 (1998-11-01), None
patent: 0985916 (2000-03-01), None
Brutschin Wolfgang
Lopatin Sergei
Bacon & Thomas
Endress & Hauser GmbH & Co. KG
Jackson André K.
Williams Hezron
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