A sensor assembly for a vortex flowmeter having a flowtube, a bluff body in the flowtube, and a sensor that detects vortices. The sensor assembly extends into contact with the process fluid through a process penetration opening. A sensor body seals the process penetration opening to limit flow of process fluid out of the flowmeter through the process penetration opening. A vortex sensor housing is secured to the sensor body. The vortex sensor housing has a pair of pressure-responsive diaphragms facing outwardly from opposite sides of the vortex sensor housing. A vortex sensor is positioned to detect motion of at least one of the pressure-responsive diaphragms to detect vortices formed in the process fluid. A temperature sensor senses a temperature of the process fluid.
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