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 and a factory adjustable Universal Air Bubble Detector for use with any tubing diameter from .100” to .450” (2.5 mm to 11.4 mm). All LifeGuard electronics are integrated into the sensor housing, ready to interface with the user’s system.

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
  • Sensor sensitivity can be changed at the factory with minor PCB modification
  • Output pulse width is proportional to bubble size, allowing user’s system to monitor sub-critical bubbles
  • Power: 5 volt,
Product Specification
LifeGuard 100
Order No:28678-001
Channel Size: .100" (2.5 mm)
Nominal Tubing Size: .125" (3.2 mm)
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
Order No:28679-001
Channel Size: .130" (3.3 mm)
Nominal Tubing Size: .155" (3.9 mm)
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
Order No:28680-001
Channel Size: .200" (5.1 mm)
Nominal Tubing Size: .260" (6.4 mm)
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)
Factory Adjustable
Air Bubble Detector
Channel Size: 0.80" - .400" (2.0 mm - 10.2 mm)
Nominal Tubing Size: .100" - .450" (2.5 mm - 11.4 mm)
Air Detection Threshold: Variable, depending on configuration
Mounting: Any orientation
Footprint Size: Variable
Hole Spacing: Variable
Custom-Built
Air Bubble Detector
Specifications are custom designed to meet customer's specific project requirements.

Medical OEM Support

+1 800.970.2337 option 8
Please contact medical OEM customer support with any questions or for additional information.

LifeGuard 5x5 Prototype Offer

Moog now offers 5 working LifeGuard prototype sensors in 5 business days.

Reliability Analysis of Moog Ultrasonic Air Bubble Detectors

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"Moog won the business based on their product quality advantage over other sensors. Today, Moog continues to earn the business based on their quality and ability to meet our changes in product demand quantities."

-- Moog Customer

How Can We Help?

Moog's engineers possess a wide range of expertise in the precision sensing and control of fluids for medical applications. Let us know how we can help with your next project.

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