Air Bubble Detector TE AD-101

Bubble detection is critical in applications such as infusion pumps, hemodialysis, and blood flow monitoring. TE Connectivity (TE) has developed a new compact AD-101 Air Bubble Detector (ABD) for non-invasive continuous monitoring of fluid for air bubble detection. Using ultrasonic technology, the AD-101 sensor is capable of positively identifying the presence of a break inflow of any type of liquid.


  • Detects bubble size as small as 70% of tubing inner diameter
  • Tubing outer diameters of 4mm and 6mm standard (sensor can be customized to tubing outer diameters between 3 and 10 mm)
  • Non-invasive design eliminates sterility and fluid compatibility concerns
  • High noise immunity to EMI/RFI
  • Acoustic coupling agent not required
  • Integral electronics
  • Power-on and continuous self-diagnostic tests to confirm functionality
  • LED indication of sensor wet and dry state visible through housing


  • Infusion Pump
  • Apheresis/Auto-transfusion
  • Biotech/DNA Analysis
  • Blood Processing
  • Immunoassay
  • Chemical Analysis Hemodialysis
  • IN-VIVO Detection of Gas
  • Hydroponics
  • Smart Farming
  • Food Processing


InputRed = 5 – 24 VDC
Black = GND
Sensor OutputWhite = Output
3.3V TTL, Low When Liquid Present, High When Bubble Present
Self-Test OutputYellow = Self-test output, 3.3V TTL, High When Pass, Low When Fault
Response Time0.22 Milliseconds
Temp. Range0 to 40°C
Bubble SizeSmallest bubble detected =70% of tubing I.D.
MaterialABS/PC (55/45) Plastic Blend, Injection Molded Parts, UL 94 V-2 Rated
CableConductor 28AWG, 350mm Long
UL Style Number 2725

Download Datasheet: TE AD-101 Air Bubble Detector

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