SONOFLOW CO.55 | Clamp-On Sensor

for contactless flow metering in flexible tubes

Ultrasonic flow sensor made of stainless stell and with displaySensor for ultrasonic flow rate measurement made of aluminum with bpt tubingNon-invasive flow sensor made of pvc
Ultrasonic flow sensor made of stainless stell and with displaySensor for ultrasonic flow rate measurement made of aluminum with bpt tubingNon-invasive flow sensor made of pvc


  • Highly Accurate Non-Invasive Measurement
  • No Interference with the Liquid
  • Quick Measurement of Pulsating and Bi-Directional Flow
  • Great Features for Volume Dosing
  • Built-In Electronics, No External Electronic Board Required

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SONOFLOW CO.55 Clamp-On Sensor - Non-invasive Flow Sensor for Liquids

The ultrasonic flow sensor SONOFLOW CO detects the flow rate of liquids in plastic tubes quickly and reliably. The non-invasive sensor has no contact to the medium and is particularly suited for applications with strict hygienic standards. The clamp-on mounting concept eliminates any risk of contamination or leaking.

Besides multiple off-the-shelf standard sizes, different housing materials, such as aluminum, stainless steel or plastics, are also available.

The contactless flow sensor SONOFLOW CO combines precise measuring performance and high quality with a unique compact and cost efficient sensor concept.

Suitable for most types and sizes of plastic tubing available on the market

  • Multiple off-the-shelf standard sizes for various tubing dimensions
  • Sensor solutions for tubing materials, such as PVC, silicone, PFA, PTFE, etc.

Signal processing

  • Complete electronic signal processing unit integrated into the sensor body
  • No external electronics board or display required
  • Configurable current, frequency or pulse output

System integration

  • Easy to integrate into existing systems via RS485 interface
  • Advanced software tool for parameterization and calibration
  • Convenient readout of measuring values


  • Parameter settings can be adapted regarding individual tube sizes and materials, fluids, flow ranges and temperature


  • In addition to our standard products, SONOTEC also manufactures customer-specific solutions

Customer Reviews

Jeff Poland, President and CEO at Century HLM, on our air bubble sensors:

“We started with SONOTEC's ABD05 series sensor. After our research and interview process SONOTEC had the only sensor capable of meeting 60601 3rd edition specifications for a fail-safe free hanging non-intrusive arterial line air detector sensor.” [Read More]

Jochen Hübner, R&D and Quality Management Representative at Herrmann Apparatebau GmbH, on our Air Bubble Sensors:

“When searching for a suitable sensor our engineers came across SONOTEC. We chose the air bubble detector ABD06 of the SONOCHECK-series – in a customized version. The small size and the approved safety functions were the main reasons that spoke for the sensor.” [Read More]

Technical Data

Measurement Principle


Measurement MethodFlow Measurement with Transit Time Principle

Channel Width

3.5 mm to 34 mm

Outer Diameter - Tube

4 mm to 35 mm

Material - Tube

PVC, Silicone, PTFE, PFA, FEP, TPE, Tygon, PE, etc.

Material - Sensor

Aluminum, Stainless Steel, Plastics


Display, Inlay, Handle

360° Produktansicht


  • Heart-Lung Machines
  • Organ Transport Systems
  • Dialysis Machines
  • Chemical Spray Systems
  • Slurry Lines
  • Dosing Systems
  • Bioprocessing
  • Pump Protection
  • Vaccine Manufacturing
  • Lab Use

Do you have any questions?

Then contact us! We're here to help.

+1 631 / 415 4758
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