Dynasonics^® manufactures transit time and Doppler ultrasonic flow meters, in fixed position, portable and multi-channel versions, as well as insertion magnetic flow meters for liquids.  Dynasonics transit time ultrasonic flow meters are completely non-invasive, while its Doppler meters are available in non-invasive and insertion types.  Dynasonics products are used in water and wastewater treatment; coal-bed methane extraction; power generation; mining; machine tool and semiconductor process cooling; HVAC and other process applications.