The SITRANS FS290 is a portable ultrasonic flow measurement system for easy checking of volumetric flow in pipes. It includes the battery-powered SITRANS FST090 transmitter and the SITRANS FSS220 clamp-on sensors. The sensors are installed quickly and easily from the outside on a pipe - without process interruption or system downtime. Transmitter FST090 FSS200 sensor pair universal size C3, for pipes 51 - 305 mm (2 - 12"), temperature -40°C to 120°C (-40°F to 250°F), with portable frame set for pipes up to 330 mm (13"). Charger Type K for U.S. (NEMA 5-15P) Two battery pack rechargeable without connection cable for I/O signals and Modbus . . Default value B Power Adaptor Type K for U.S.(NEMA 5-15P)