BS ISO 12764. Measurement of fluid flow in closed conduits. Flowrate measurement by means of vortex shedding flowmeters inserted in circular cross-section conduits running full Flow, Flow measurement, Channel flow, Water, Liquid flow, Reynolds number, Flowmeters, Flow rates, Volume flowmeters, Fluid phenomena, Vortices, Cavitation, Conduits (hydraulic), Calibration, Errors, Performance, Fluid pressure, Installation, Pressure measurement (fluids), Response time, Formulae (mathematics), Velocity, Pipes, Symbols