FFU - Flow sensors

Non-contact flow measurement


The non-contact FFU ultrasonic flow sensor detects the flow volumes of conductive and non-conductive liquids. Swimming against the current requires more strength than with the current – this is the simple fact on which ultrasonic flow measurement according to the phase difference process is based. The compact design of the device enables it to be used in a wide range of applications, including those with limited space. This IP67-rated sensor features a seal-free sensor design with high-quality polysulfone (Ultrason S) which, as well as ensuring that the device can be used in harsh ambient conditions, also ensures high process reliability. The large-screen cleartext display also helps to make commissioning straightforward, fast and hassle-free. The FFU even has the ability to communicate with higher order control units via IO-Link.


At a glance

  • Flow sensor for conductive and non-conductive liquids
  • Compact design with no moving parts
  • Process temperature up to 80 °C, process pressure up to 16 bar
  • High chemical resistance due to seal-free sensor design
  • Large display with membrane keyboard
  • Integrated empty tube detection

Your benefits

  • Maintenance-free flow sensor, reduces maintenance costs
  • Adjustable measuring ranges, reduced number of variants
  • Can be used for conductive and non-conductive liquids, reducing both the number of variants and storage costs
  • Straight measuring tube reduces pressure loss, thus reducing energy costs
  • Sensor without seals increases process reliability and availability
  • Flexible measuring device for all industries