Siemens SITRANS FS220 Digital Clamp-on Ultrasonic Flowmeter


  • High accuracy and repeatability – accuracy of 1% of flow rate and repeatability of 0.25% according to ISO 11631
  • Exceptional zero stability – minimal need to set a zero point
  • Best-in-class user-friendliness – fully graphical display with simple menu navigation, multiple setup wizards and the option to display up to 6 customizable parameters on the same screen
  • Easy servicing – includes removable SensorFlash® microSD card and built-in USB service port

Siemens SITRANS FS220 is a Digital Clamp-on Ultrasonic Flowmeter that delivers fundamental flow measurement capabilities with exceptional precision, cost-effectiveness, and user-friendly operation. It represents the top-tier choice for uncomplicated liquid process flow monitoring. The SITRANS FS220 flow system comprises a SITRANS FST020 transmitter combined with SITRANS FSS200 clamp-on ultrasonic sensors.


Channel Single channel
Communication Modbus RTU, compatible with SIMATIC PDM
Enclosure rating IP65 (NEMA 4X)
Display 240 x 160, fully graphical
Input 2x digital inputs for totalizer start/stop and reset
Output 1x 4 -20 mA, 1x relay, 1x pulse/frequency
Power supply 100-240 V AC 15 VA max., 11.5-28.5 V DC 7.5W max.
Accuracy 1% for velocities ≥ 0.3 m/s (1 ft/s)
Flow range ±12 m/s (±40 ft/s), bidirectional
Pipe size range 12.7 mm to 10 m (0.5″ to 394″
Approval UL, ULc, CE


Siemens SITRANS FS220 Digital Clamp-On Ultrasonic Flowmeter_DpstarGroup