Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2006-08-21
2010-02-09
Previl, Daniel (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S621000, C340S632000, C340S870030
Reexamination Certificate
active
07659828
ABSTRACT:
An industrial field device provides information indicative of a process variable. The field device includes a controller, communication circuitry, a process variable sensor and measurement circuitry. The communication circuitry is coupled to the controller. The process variable sensor has an electrical characteristic that changes based on a variable of a process fluid. The measurement circuitry is coupled to the process variable sensor and coupled to the controller. The controller is configured to generate communication via the communication circuitry relative to the process variable, and to provide an indication of sand flow or other solids in the fluid.
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Eryurek Evren
Karschnia Robert J.
Wehrs David L.
Christenson Christopher R.
Previl Daniel
Rosemount Inc.
Westman Champlin & Kelly P.A.
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