SITRANS FS220
Process Instrumentation

Clamp-on Ultrasonic Flow Meter
The SITRANS FS220 digital clamp-on ultrasonic flow meter provides the most essential flow measurement functionalities with superior accuracy, cost efficiency and ease of use. It is the best-in-class solution for straightforward flow monitoring of liquid processes in number of industries, including water and wastewater, HVAC, power and chemical.
SITRANS FS220 Catalog
specifications
The SITRANS FS220 clamp-on ultrasonic flow system consists of a SITRANS FST020 transmitter paired with SITRANS FSS200 clamp-on ultrasonic sensors, which are available in three different models: WideBeam® (High-Precision), Universal and High-Temperature. The FST020 transmitter has been upgraded to deliver leading reliability, user-friendliness and options for customization, while the FSS200 sensors feature low maintenance and high precision – even for applications with high levels of aeration or suspended solids.
Benefits
Built on the same architecture as other next-generation digital flow systems from Siemens, the SITRANS FS220 clamp-on flow meter features among others:
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
SITRANS FST020 wall-mount transmitter
Channels | Single channel |
---|---|
Communication | Modbus RTU, compatible with SIMATIC PDM |
Enclosure rating | IP65 (NEMA 4X) |
Display | 240 x 160, fully graphical |
Power Supply | 100-240 V AC 15 VA max., 11.5-28.5 V DC 7.5W max. |
Inputs | 2x digital inputs for totalizer start/stop and reset |
Outputs | 1x 4 -20 mA, 1x relay, 1x pulse/frequency |
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") |
FApprovals | UL, ULc, CE |