Ultrasonic transit-time flow meter SONOFLOW CO.56 Pro V2.0

volumefor liquidsportable

Overview
The lightweight SONOFLOW® CO.56 Pro V2.0 sensor series is designed for use in or as an addition to ECLS/ECMO and cardiopulmonary support systems. The sensors combine ultrasonic transit-time flow measurement with reliable air-bubble detection on medical tubing. Products are available as a free-hanging hybrid sensor for direct suspension on tubing or as SONOFLOW® | AVA — a portable clamp-on model with a configurable touch display for standalone monitoring.

Variants

• SONOFLOW® CO.56 Pro V2.0 — free-hanging hybrid sensor for suspension on tubing
• SONOFLOW® | AVA — portable clamp-on sensor with integrated touch display

Product benefits

• Combined accurate flow measurement and air-bubble detection in one device
• Free-hanging design for minimal integration effort in ECLS systems
• Portable clamp-on option for rapid, non-invasive measurements
• Integrated electronics and compact, lightweight construction
• Configurable display (AVA) with adjustable min/max flow thresholds

Key features

• Ultrasonic transit-time measurement principle
• Designed for standard medical PVC tubing sizes (multiple sensor sizes available)
• Fail-safe architecture with cyclical self-tests and watchdog supervision
• No mechanical moving parts to avoid shear stress on blood cells
• IP67 ingress protection for humid/sterile environments

Safety concept
Technical safety features

• Fail-safe architecture and cyclical self-tests for essential components
• Watchdog securing outputs in case of major sensor errors
• Initial test procedure after power-on or software reset

Regulatory safety standards

• Medical safety: IEC 60601-1 (3rd edition)
• Electromagnetic compatibility: IEC 60601-1-2 (4th edition)
• Acoustic emission: IEC 61157
• RoHS compliance: 2011/65/EU

Advanced safety features

• High electromagnetic stability and strong isolation up to 1000 V
• CF classification (cardiac floating)
• Sensor design limits leakage current to protect patient and operator
• Low acoustic emission levels suitable for diagnostic devices
• Sterile-capable design and no mechanical parts in blood flow path

Technical data (excerpt, comparison CO.56 Pro V2.0 | AVA)
Measurement principle: Ultrasonic transit-time | Ultrasonic transit-time
Function: Flow measurement + air-bubble detection | Flow measurement + air-bubble detection (note: bubble detection should be performed via ECMO/ECLS interface for safety)
Installation: Free-hanging on tubing, optional built-in | Portable clamp-on, standalone
Tube compatibility (examples): 1/4" × 1/16" | 1/4" × 3/32" | 3/8" × 3/32" (additional sizes planned)
Display: - | Configurable touch display (AVA)
Sensor material: Black anodized aluminum
Tube material: PVC
Weight: approx. 100 g (CO.56 Pro V2.0) | approx. 135 g (AVA)
Interfaces: RS-485 (CO.56 Pro) | USB-A (AVA)
Protection class: IP67

Important note
SONOFLOW® AVA flow sensors are intended to additionally monitor the flow rate measured by the ECLS system and do not replace clinical judgment. Sales of SONOFLOW® AVA sensors are restricted to companies/institutions registered within the European Union. Export outside the EU is excluded.

Technical specifications

• Model: SONOFLOW® CO.56 Pro V2.0 (free-hanging) and SONOFLOW® | AVA (portable)
• Measurement method: Ultrasonic transit-time
• Combined functions: Flow measurement and air-bubble detection
• Installation options: Free-hanging, optional built-in, or portable clamp-on (AVA)
• Supported tube sizes (examples): 1/4"×1/16", 1/4"×3/32", 3/8"×3/32" (more sizes planned)
• Housing: Black anodized aluminum
• Ingress protection: IP67
• Standards: IEC 60601-1, IEC 60601-1-2, IEC 61157, RoHS 2011/65/EU
• Safety features: Fail-safe architecture, cyclical self-tests, watchdog, CF classification, strong isolation up to 1000 V