Sensors

LifeGuard Ultrasonic Air Bubble Detector

Accurate and non-invasive ultrasonic air-in-line sensors LifeGuard Ultrasonic Air Bubble Detectors

LifeGuard ultrasonic air bubble detectors feature proprietary swept frequency technology, making these sensors more reliable and accurate than those utilizing fixed frequency or pulse-type circuitry.

LifeGuard air-in-line sensors offer the most flexibility in air bubble sensor sizes, with three standard configurations for common tubing sizes. Additionally, production performance equivalent (quick-turn) custom sensors for use with any tubing size are available utilizing in-house 3D printing capabilities.

Features of all LifeGuard Air Bubble Detectors

  • Detectors maintain precise sensitivity without calibration
  • Extremely reliable swept-frequency technology prevents sensor performance from drifting with temperature, age or environmental conditions
  • Integrated self-test function provides 100% single fault coverage
  • Dry-couples to PVC, silicone and many other tubing types with thick, thin or reinforced walls
  • Output pulse width is proportional to bubble size — allowing user’s system to monitor subcritical bubbles
  • Chemically compatible with common medical grade cleaners
  • Vibration resistant
  • Wide temperature range stable
  • High reliability: > 1 M hours MTBF
  • Proven performance in life critical equipment
  • Low power consumption
  • RoHS compliant
ProductSpecification
LifeGuard 100
Part No: 53088
Channel Size: .100" (2.5 mm)
Nominal Tubing Size: .125" (3.2 mm) OD
Air Detection Threshold: > 10 microliter
Mounting: Any orientation
Footprint Size: 1.25" x .5" (31.8 mm x 12.7 mm)
Hole Spacing: 1.00" (25.4 mm)
LifeGuard 130
Part No: 52861
Channel Size: .130" (3.3 mm)
Nominal Tubing Size: .155" (3.9 mm) OD
Air Detection Threshold: > 20 microliter
Mounting: Any orientation
Footprint Size: 1.25" x .5" (31.8 mm x 12.7 mm)
Hole Spacing: 1.00" (25.4 mm)
LifeGuard 200
Part No: 53089
Channel Size: .200" (5.1 mm)
Nominal Tubing Size: .260" (6.4 mm) OD
Air Detection Threshold: > 40 microliter
Mounting: Any orientation
Footprint Size: 1.25" x .5" (31.8 mm x 12.7 mm)
Hole Spacing: 1.00" (25.4 mm)

Quick-Turn 3D
Printed Prototypes

Channel Size: Dependent on nominal tubing size
Nominal Tubing Size: .060 in - 1.50 in OD (1.5 mm - 38.1 mm)
Air Detection Threshold: Variable, depending on configuration
Mounting: Any orientation
Footprint Size: Variable
Hole Spacing: Variable
Custom Sensor Solutions Specifications are custom designed to meet customer's specific project requirements.

Technical Customer 

Support 

Telephone:  +1-801-974-7200

Literature Downloads

Reliability Analysis of Moog Ultrasonic Air Bubble Detectors

Download PDF

Contact Us

Moog's engineers and customer support teams are ready to assist you.