Ultrasonic Bubble Detector

• Non-contact measurement
• No coupling medium required
• Built-in electronics, no external electronic board required
• CE certified

Key Features

• High-grade sensor for air bubble monitoring
• Compact sensor design with integrated electronics for data processing
• Non-invasive measurement method directly through the tubing wall
• Suitable for hygienically-critical applications, contamination resistance
• Fitting for a wide range of industries — as well as bioprocessing-specific plastic tubing, such as platinum cured silicone, TPE, reinforced tubing, PVC, PE, PFA, FEP, PUR (no limitations due to the use of opaque tubings)
• Applicable for water, water-like and low-viscosity liquids without/with few solid particles
• Can be used without special acoustic coupling precautions
• Stable sensor reliability to changing acoustic conditions in bioprocessing applications such as moderate changes in buffer solution concentration, fluid density, and viscosity
• Optionally available with ATEX certification for use in hazardous areas

• Chromatography: Prevention of air being pumped into columns and diversion of air-infused liquids around the columns
• Tangential Flow Filtration: Prevention of air entry into filter cassettes
• Pump Protection: Detection of air bubbles caused by cavitation and protection from dry running
• Bioreactors / Fermentators: Detection of foaming in feed / harvest lines
• Feed Stream: Continuous monitoring for air bubbles in the feed stream to prevent air entering the filter
• Transfer Lines: Notification when reservoirs run dry
• Fill & Finish: Detection of undesired air entering vessels to prevent inaccurate volume dose

Precision made in Germany.

SONOTEC specializes in ultrasonic sensor technology for non-contact liquid flow measurement and air bubble detection. With a strong presence in biopharma and medical applications, SONOTEC delivers:

• ISO 9001 and ISO 13485 certified manufacturing
• ATEX / IECEx-ready options for explosive environments
• Scalable sensor solutions from lab to GMP production

SONOTEC sensors are designed for system integration, continuous processing, and cleanroom compliance — ensuring high performance across the full bioprocess lifecycle.