Profile: Introtek International is a producer of non-invasive ultrasonic air bubble detectors, continuous liquid level sensors, optical blood component detectors, and now pressure occlusion detectors. Our products are widely applied in medical devices, chemical processing, pharmaceutical development, clinical laboratories, and food & beverages. Our sensors utilize a patented pulse-type ultrasonic technology that detects air bubbles, air-in-line, and liquid levels with the highest degree of accuracy & reliability, thereby maintaining an extremely high MTBF. Additionally, our sensors are not susceptible to the limitations exhibited by continuous wave, capacitive, or load-cell sensors. AD8 / AD9 air bubble detection sensors incorporate our latest generation MEC pulse-type ultrasonic circuitry. The micro-controller based circuitry is located integrally in the sensor assembly. Custom algorithms to control functionality, such as response times and time delays can be designed on customer requirements. Our patented pulse-type ultrasonic technology provides highly reliable, non-invasive air detection capabilities in the most critical applications where the safety of a patient or process is mandatory. Many of the variables, which can affect performance of amplitude or continuous wave based sensing systems, are eliminated or greatly reduced, thus yielding accurate and repeatable detection.