Your search for "ultrasonic flowmeter" revealed the following:

Endress+Hauser Proline Prowirl O 200 high-pressure vortex flowmeter for steam and gas measurement
Endress+Hauser Proline Prowirl R 200 low-flow vortex flowmeter for steam and gas measurement
Endress+Hauser Prosonic FDU92 ultrasonic sensor for long-range non-contact level measurement
Endress+Hauser Prosonic FDU90 ultrasonic sensor for non-contact level and flow measurement