Vortex Flow Meter Maximum Measurable Flow

The bluff body in a vortex shedding flowmeter generates a pressure drop that could cause the liquid to fall below its vapor pressure and flash. Flashing can result in cavitation. Cavitation can be destructive.

Yokogawa's comments on cavitation from their Vortex spec sheet, GS 01F06A00-01EN:

The DP across the bluff body will increase with flow rate.

Since Po remains the same (assuming constant medium temperature), an increase in DP will increase P.

It's probably worth inquiring of your vendor's Vortex to see what their calculation is to determine if the velocity increase will exceed flash point and cavitate.

Citing a specific manufacture and model number would be helpful; however, without that one would need more information to accurately determine whither you may harm your interment or system. The following are required to assess max flow rate before cavitations become harmful.

Rho of fluid
Pressure of system
Flash point of fluid
Area of pipe
Type of pipe

Typically the meters are set to read a specific frequency range, causing vortex frequencies above the designed scale will probably cause meter to read 2nd or 3rd harmonics. So if harmful cavitations do not develop you will require calculations to determine the actual flow rate in system

One word of caution: Most systems are designed so vibrations will be well outside of harmonic frequency, when you change the vibration frequency you may accidently stumble upon the harmonic frequency of a that area of system. I have witnessed a piping system latterly blow up because of harmonic frequency vibrations.