8800 High Pressure Flanged Vortex Flowmeter • Up to ANSI Class 1500 pressure ratings. • Ideal for injection applications. Ultrasonic flow meters calculate the flow rate by measuring the velocity of fluid flowing through a pipe. The most common type of ultrasonic technology in use by oil and gas operators is based on the theory of transit time measurement, with time over a fixed distance being the critical unit of measure. The meters are configured with transducers and powerful, high-speed electronics that work in tandem to provide a wealth of diagnostic data to ensure maximum uptime with minimal maintenance.