Piezoelectric Ultrasonic Transducers for the Detection of Gas Bubbles

The undisturbed flow of a medium without air or gas pockets is required, for example, in metering and bottling systems or in medical applications.

One method of bubble detection is the propagation time measurement by ultrasonic technology.

The measurement of the propagation time is based on alternate transmission and reception of ultrasonic pulses in and against the direction of flow. The sensor performs noncontact detection of air and gas bubbles in the liquid through the tube wall, and thus allows continuous quality monitoring. Two piezoelectric ultrasonic transducers work as transmitter and receiver.

Ultrasound Technology in Medical Technology and Industry

The application possibilities are in the medical, pharmaceutical and food technology fields. The sensors are used to monitor dialysis machines, infusion pumps or transfusions.

In medical technology, air bubble detectors (ABD) ensure bubble-free infusions or bubble-free flow in heart-lung machines. With suitable shielding of the electronics, non-magnetic piezo technology can even be used in extreme environments, such as in the field of magnetic resonance tomographs.

Examples of industrial applications include control technology, such as the monitoring of dosing and filling machines.

  • Flexible, compact designs: Rings, disks, small plates
  • Variable strokes, high force generation and acceleration
  • No friction, no maintenance, no wear
  • Cost-effective: Large-scale piezo element production

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Downloads

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Success Story: PI Ultrasonic Piezo Elements for Sensor Applications

From Level Measurement to Adaptive Systems Technology
SUCCESS STORY pi1094
SUCCESS STORY pi1094
pdf - 514 KB
pdf - 514 KB
pdf
pdf

Success Story: PI Ultrasonic Piezo Elements

Ultrasonic Piezo Elements have Countless Applications - From Sonar to Welding Equipment
SUCCESS STORY pi1093
SUCCESS STORY pi1093
pdf - 515 KB
pdf - 516 KB
pdf
pdf

Whitepaper: PI Ultrasound Piezo Elements in Medical Technology

Tool, Therapeutic Device and Sensor
WP pi1095
WP pi1095
pdf - 1 MB
pdf - 1 MB
pdf
pdf

Brochure: PI Piezo Drive Solutions

For Medical Engineering
BRO23
BRO23
pdf - 1 MB
pdf - 917 KB