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Balluff: Tube sensors for microbubble detection

The Balluff microbubble detection sensor is used in special cases where free-floating, microbubbles need to be detected within a tube.

MICROmote® optical precision tube sensors
MICROmote® optical precision tube sensors

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This sensor uses patented technology to detect bubbles even smaller than 10µm in diameter -- bubbles smaller than the human eye can see.

The Balluff MICROmote® optical precision tube sensors are designed to detect free-floating air bubbles in transparent liquids. These free-floating air bubbles have dimensions smaller than their tube's inner diameter.

The sensor's ability to detect free-floating air bubbles results from a uniform illumination of the tube's liquid column. This uniform illumination is created by a concentrated arrangement of multiple light beams, each with an individual uniform intensity distribution, surrounding the tube. When a small air bubble enters the sensing field it induces a significant signal jump on the sensor's receiver elements. This signal jump enables reliable detection of the tiniest air bubbles, even microbubbles. (A microbubble is defined as a bubble smaller than one millimeter in diameter.)

Together with the microprocessor controlled MICROmote® amplifiers, with either switching or analog output, these tube sensors form a complete detection system with diverse application possibilities for laboratory, analysis and medical technology.

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