Measuring and testing – Liquid level or depth gauge
Reexamination Certificate
2007-08-14
2007-08-14
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid level or depth gauge
C073S29000R, C073S866500
Reexamination Certificate
active
11100768
ABSTRACT:
A microwave level gauge for measuring a level of a process material in a tank includes a ceramic seal and a microwave conductor. The ceramic seal is disposed adjacent to an opening in the tank and adapted to isolate circuitry from the process material. The microwave conductor is electrically coupled to the circuitry and extends through the hermetic seal and into the process material in the tank. The ceramic seal and an isolating adapter cooperate to isolate the microwave conductor from the process fluid and from external forces.
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Fandrey Mark C.
Gravel James L.
Frank Rodney
Rosemount Inc.
Westman Champlin & Kelly P.A.
Williams Hezron
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