The flowmeter enhances online vortex sensor maintainability, while providing an added level of safety on critical applications. The vortex sensor in the flowmeter is isolated from the process, making it possible to maintain the vortex sensor without requiring a process shutdown. The flowmeter insures the vortex sensor is isolated from the process enhancing safety by limiting personnel exposure, and maximizing product throughput by eliminating the need to shutdown the process to maintain a vortex sensor. In addition, the Rosemount flowmeter has the ability to verify the health of the transmitter by simulating the vortex flow signal. The combination of these two features enables complete verification of the electrical components of the flowmeter while the process is up and running.