Measuring and testing – Volume or rate of flow – Using differential pressure
Reexamination Certificate
2006-08-29
2008-12-09
Thompson, Jewel (Department: 2855)
Measuring and testing
Volume or rate of flow
Using differential pressure
Reexamination Certificate
active
07461562
ABSTRACT:
A process variable transmitter for measuring a process variable of a process fluid in a vessel includes first and second pressure couplings arranged to receive a first pressure and a second pressure of process fluid in the vessel. These pressures are related to the density of the process fluid. A sensor provides a sensor output related to the process fluid in the vessel. Measurement circuitry is configured to calculate a calculated process variable of the process fluid in the vessel based upon the first and second pressures and the sensed process variable.
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“Pressure Sensor
Rosemount Inc.
Thompson Jewel
Westman Champlin & Kelly P.A.
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