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.

Features :

  • 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)
  • The 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 the housing

Applications :

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

Specification :


Red = 5 – 24 VDC
Black = GND

Sensor Output

White = Output
3.3V TTL, Low When Liquid Present, High When Bubble Present

Self-Test Output

Yellow = Self-test output, 3.3V TTL, High When Pass, Low When Fault

Response Time

0.22 Milliseconds

Temp. Range

0 to 40°C

Bubble Size

The smallest bubble detected =70% of tubing I.D.


ABS/PC (55/45) Plastic Blend, Injection Molded Parts, UL 94 V-2 Rated


Conductor 28AWG, 350mm Long
UL Style Number 2725



Download Datasheet: TE AD-101 Air Bubble Detector

For further please contact us,