RF cavity-based process fluid sensor

Details RF cavity-based process fluid sensor RF cavity-based process fluid sensor

2009-04-08

2011-12-27

Bugg, George (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S540000, C340S603000

Reexamination Certificate

active

08085156

ABSTRACT:
A remote system for sensing a process fluid parameter comprises a cavity, a tuner and a signal coupler. The cavity is configured to resonate at a central frequency that shifts in response to the process fluid parameter. The tuner is configured to tune the central frequency. The signal coupler is configured to receive a query signal, and to transmit an echo signal when the query signal matches the shifted central frequency.

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The International Search Report and Written Opinion of foreign application No. PCT/US2010/001031 filed Apr. 6, 2010.

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