SITRANS FST020 (Basic)


Being that the  SITRANS FST020 clamp-on ultrasonic flow  meter offers basic functionalities, it is considered an optimal and affordable alternative to more complex flow measurement solutions.

To make product selection straightforward while still offering solutions that fit the requirements of the water and wastewater, HVAC, power, chemical and general process industry,  the product configuration has  been  simplified.

In turn, the SITRANS FST020 features a user-friendly design,  a very competitive price and  delivery times that are up to par with market expectations.

Application examples include processed sewage, sludge, chemical feed, process control, coolant flow and fuel flow.

Pair the SITRANS FST020 with the SITRANS F US   Thickness Gauge to ensure precise flow measurement.


 Measuring range

 ±12 m/s (±40 ft/s) bidirectional

 Nominal sizes

 DN 6 to DN 9140 (0.25" to 360")


 ±0.5-1% at ≥0.3 m/s (1ft/s)


 ±0.15% at ≥0.3 m/s (1ft/s)


 2 digital (totalizer hold and reset)


 1 analog, 1 relay, 1 pulse


 BACnet MSTP, Modbus RTU, VT100 RS232

 Ambient temperature

 -10 to 50 °C (14 to 122 °F)

 Medium temperature

 -40 to 230 °C (-40 to 450 °F)

 Enclosure rating        

 Wall mount: IP65 (NEMA 4X)




  • Performs basic measurement tasks

  • Reduces installation costs with compact, integral design

  • Ensures stable performance  by matching sensors to the pipe material

  • Straightforward and easy product selection