Air-bubble detectors (ABD) with Ultrasonic Piezo transducers from PI CeramicIn medical device engineering it is often necessary to ensure an undisturbed liquid flow with no air or gas pockets.
Permanent monitoring of the flow is particularly essential for dialysis, transfusion pumps or heart-lung machines.
This is achieved with the aid of ultrasonic technology in so-called bubble or air-bubble detectors (ABD).
Piezoelectric transducers from PI Ceramic are the key elements for this technology.
They transmit and receive the ultrasonic waves, similar to the sonar used in submarines. The sensors are mounted on the outside of flexible tubes and operate under sterile conditions without coming into contact with the medium to be transported; they do not interfere with the flow rate, nor is there any danger of contamination. The bubble detector detects air bubbles in flexible plastic tubes filled with liquid, regardless of the color or opacity of the medium.
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