US 12,385,767 B2
Multifluid detection and totalization in a vortex flow meter
Jeffry D. Foster, St. Louis Park, MN (US); and Randy K. Paschke, Golden Valley, MN (US)
Assigned to Micro Motion, Inc., Boulder, CO (US)
Filed by Micro Motion, Inc., Boulder, CO (US)
Filed on Dec. 19, 2022, as Appl. No. 18/068,042.
Prior Publication US 2024/0200993 A1, Jun. 20, 2024
Int. Cl. G01F 1/32 (2022.01); G01F 15/06 (2022.01); G01F 15/075 (2006.01); G01N 9/32 (2006.01)
CPC G01F 1/3209 (2013.01) [G01F 15/065 (2013.01); G01F 15/0755 (2013.01); G01N 9/32 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vortex flow meter comprising:
a flowtube configured to receive a flow of process fluid;
a shedder bar disposed within the flowtube, the shedder bar being configured to generate vortices in the flow of process fluid;
a vortex sensor disposed to sense vortices in the flow of process fluid generated by the shedder bar;
measurement electronics operably coupled to the vortex sensor, the measurement electronics being configured to detect an analog signal of the vortex sensor and provide a digital indication relative to the analog signal of the vortex sensor;
a processor configured to receive the digital indication and calculate velocity of the process fluid flow based on a frequency of the digital indication and measure an amplitude of the digital indication and estimate density of the process fluid based on the measured amplitude, the processor being configured to determine a fluid type based on the estimated density and assign a unit of flow corresponding to the calculated velocity to a fluid totalizer corresponding to the detected fluid type.