SONOFLOW CO.55This compact ultrasonic flow sensor for fixed installation quickly detects the flow rate of liquids in flexible tubes.

Due to its construction the clamp-on sensor is particularly suitable for applications in situations with strict hygienic standards and for contamination-free purposes. The tube is easily slid into the sensor and enables a smooth and uncomplicated change.

The SONOFLOW CO.55 is constructed as a built-in component for machines and apparatus. The electrical integration into the control system can be carried out easily. The sensor has got a configurable current or pulse output. The service interface allows an easy parameterization, calibration and readout of measuring values.

In addition to our standard products, we can also provide customer-specific solutions.

Suitable for most types and diameters of plastic tubing

  • Multiple standard sizes for various tube diameters
  • Sensor solutions for tubing materials, such as PVC, silicone, PFA, PTFE, etc.

Signal processing

  • Complete electronic signal processing unit integrated in the sensor body
  • No external PCB or display required
  • Configurable flow, frequency or pulse output

System integration

  • Easy to integrate into existing systems via RS485 interface
  • Advanced software tool for parameterization and calibration
  • Easy reading of measured values
  • SONOFLOW | C³ Software for user-friendly sensor control and setting functions – Optionally


  • Parameter settings can be adjusted with regard to individual tube sizes and materials, fluids, flow ranges and temperatures


  • In addition to our standard products, we also provide customer-specific solutions
  • Fixed installation
  • Non-invasive measurement
  • No coupling medium required
  • Compact construction
  • Quick measurement without any time lag
  • No wear and tear
  • No dead volume
  • Heart-lung machines
  • Organ transport systems
  • Dialysis machines
  • Chemical spray systems
  • Slurry lines
  • Dosing systems
  • Bioprocessing
  • Pump protection
  • Production of vaccines
  • Lab use
  • Measurement method : Ultrasound, Transit Time difference
  • Tube diameter (inside) : 3.5mm to 34mm
  • Tube diameter (outside) : 4 mm to 35 mm
  • Tube material : PVC, Silicone, PTFE, PFA, FEP, TPE, Tygon, PE, etc.
  • Sensor material : Aluminum, stainless steel, plastic
  • Optional : Display, inlay, handle
  • SONOFLOW CO.55 - ultrasone flow sensor | U-F-M b.v.
  • SONOFLOW CO.55 - ultrasone flow sensor | U-F-M b.v.
  • SONOFLOW CO.55 - ultrasone flow sensor - remote display | U-F-M b.v.