The Fuji FSZ is a compact, clamp-on ultrasonic flow meter designed for ease of use in a variety of applications, from pure water manufacturing and cleaning processes to equipment cooling . Its unique 4-screw clamp-on style requires no pipe modification, and it utilizes a special rubber compound for close pipe contact, eliminating the need for grease . The meter is configurable with just three buttons, allowing users to turn it on, configure four settings, and start measuring immediately .

A built-in temperature measurement function enables simultaneous measurement of flow rate and temperature, making it an ideal tool for energy monitoring . For example, it can be installed on cold and hot water piping throughout a building to facilitate more efficient operation of fan coil units (FCUs) and air handling units (AHUs) . This monitoring of flow rates directly contributes to energy savings .

The FSZ operates using the transit-time measuring method and offers a measurement range of 0 to ±5 m/s (minimum 0 to ±0.2 m/s). It features a 0.5-second response time and provides a 4-20 mA analog output and two contact outputs for integration with control systems . It is suitable for pipes with a thickness of 1.2 mm to 4.9 mm and can handle fluid temperatures from -15 to 85°C, depending on ambient conditions .