Ultrasonic Flow and Bubble Sensors for Liquids

Non-contact liquid measurement on rigid and flexible tubing plays an important role in a large number of applications with highest sterility and hygiene requirements and purity demands.

Non-invasive flow meters and air bubble detectors are key components in the semiconductor industry, in bioprocessing applications, and are widely used in medical technologies.

Product Portfolio

Non-contact liquid flow measurement with SONOFLOW® and SEMIFLOW® sensors

Flow-Bubble Sensor SONOFLOW CO.56 Pro V2.0

Combined flow measurement and air bubble detection with SONOFLOW® CO.56 and SONOFLOW® CO.56 Pro sensors

Contactless air bubble detection with SONOCHECK® sensors

Non-invasive level monitoring of liquids in medtech and industrial applications

Detecting smallest amounts of blood in clear liquids with the blood leak detector BLD

Areas of Application

Non-contact flow meters & bubble detectors for bioprocessing applications

Non-contact flow sensors & bubble detectors for the semiconductor industry

Non-invasive ultrasonic sensors for medical technology

Expertise

Flow Sensor Selection Guide to select the right sensor for the specific application

Scientific publications of non-contact ultrasonic flow and bubble sensors

Moving image content about ultrasonic clamp-on flow meters

Latest press releases of the business unit "Non-Invasive Fluid Monitoring"

Customer Opinions and Reviews on our ultrasonic sensors

Liquid Flow Measurement

High-precision SONOFLOW and SEMIFLOW flow sensors are used for non-contact liquid flow monitoring. They measure and control flow velocities, flow rates, and flow volume as well as dosing processes.

Air Bubble Detection

Sensors in the SONOCHECK ABD series are designed for contact-free air bubble detection in liquid-filled tubes. They also assume tasks for full / empty monitoring.

Calibration Service & Repair

To maintain the original performance and accuracy of our products, we recommend recalibrating our sensors every 12 months. In addition to recalibrating our flow sensors, we offer safety inspections and repair services for all our ultrasonic products.

Press Releases

02.10.2026

Take on the Team Duel for the Team Event

On Friday, September 25, 2026, the colleagues of the Business Unit “Non-Invasive Fluid Monitoring”…

Non-contact ultrasonic clamp-on flow sensor SEMIFLOW CO.65

16.09.2026

SONOTEC presents metal-free non-contact flow meters at SEMICON West

Once again, SONOTEC will present its ultrasonic sensors for non-contact flow measurement at SEMICON…

Events

07.10.2026

ISPE Boston Product Show

October 7, 2026 - Boston, USA

Visit us at booth #E155 with our partner Sentinel

07.10.2026

SAVE

October 7 - 8, 2026 - Verona, Italy

Visit our partner Repcom at booth #23-33

13.10.2026

SEMICON West

October 13 - 15, 2026 - San Francisco, USA

Visit us at the Silicon Saxony booth #1245

We will be happy to help you.

For more information regarding applications and pricing, please feel free to contact us.

Receiver: sensors@sonotec.de

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Stefanie Schmidt

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+49 345 13317-845

sensors@sonotec.de

Non-Invasive Fluid Monitoring

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Ultrasonic Flow and Bubble Sensors for Liquids

Product Portfolio

Ultrasonic Flow Meter for Liquids

Ultrasonic Flow-Bubble Sensor

Ultrasonic Bubble Detector

Level Detection Sensor

Blood Leak Detector

Areas of Application

Biotechnology

Semiconductor

Medical Technology

Expertise

Sensor Selection

Publications

Videos & Tutorials

Media Center

Customer Reviews