Product Overview
The BBMU-BD-A provides non-invasive detection of air and bubbles in liquid-filled tubing. Mounted outside the fluid path, it continuously distinguishes liquid from air without contacting the medium or modifying the flow path. A digital logic signal communicates the detected condition to the host equipment.
The sensor is designed for infusion pumps, syringe pumps, hemodialysis systems, blood-processing equipment, biotechnology instruments, chemical analyzers, food-processing equipment, and other fluid-handling systems. Configurations are available for different tube materials, outside diameters, output levels, and self-test requirements.
Key Features
- Non-invasive ultrasonic detection with no liquid contact
- No acoustic coupling agent required
- Detection of bubbles, air, and empty-tube conditions
- Typical response time of approximately 0.22 ms
- Minimum detectable bubble approximately 70% of tube inner diameter
- Multiple tube-size, supply-voltage, and output configurations
- Optional power-on and continuous self-test functions
- High immunity to EMI and RFI
Technical Specifications
| Parameter | Specification |
|---|---|
| Detection principle | Non-invasive ultrasonic detection |
| Detected conditions | Liquid / air or bubble |
| Tube outside diameter | 1.6 to 10 mm; custom sizes available |
| Minimum detectable bubble | Approximately 70% of tube inner diameter |
| Response time | Approximately 0.22 ms |
| Supply voltage | 5 to 24 VDC, configuration dependent |
| Output | 3.3 V or 5 V digital logic |
| Default output logic | Low for liquid; high for air or bubble |
| Self-test | Optional |
| Operating temperature | 0 to 40 °C |
| Housing material | ABS/PC plastic |
| Cable | 28 AWG; custom length available |
Available Configurations
| Item | Options |
|---|---|
| Tube outside diameter | 1.6, 2.0, 3.2, 4.0, 5.2, and 6.0 mm; other sizes available |
| Supply voltage | 5, 12, or 24 VDC |
| Output level | 3.3 or 5 V |
| Self-test | Without or with self-test |
| Cable length | Standard or customized |
Applications
- Infusion and syringe pumps
- Hemodialysis and blood-processing equipment
- Apheresis and autotransfusion systems
- Biotechnology, DNA-analysis, immunoassay, and chemical-analysis instruments
- Food-processing and fluid-control equipment
- Other fluid systems requiring bubble or empty-tube detection
Selection Information
For selection, specify the tube material, outside diameter, wall thickness, liquid, supply voltage, output level, self-test requirement, and cable length.