Introtek International designs and manufactures non-invasive ultrasonic air bubble and liquid level detection systems, which utilize a patented, reliable, pulse-type ultrasonic technology. This advanced technology allows for the detection of air, air bubbles, or liquid level without susceptibility to many of the problems exhibited by continuous wave ultrasonic systems or optical detection systems.

Introtek's sensors are typically used on patient-connected medical devices to detect air in tubing before it enters a patient's bloodstream.

Applications

• Apheresis
• Auto Transfusion
• Blood Processing
• Hemodialysis
• Infusion and Syringe Pump Devices
• Chromatography
• Dispensing
• Other Industrial applications

Any of Introtek's standard sensors and electronics can be

• custom-designed to meet the requirements of O.E.M. systems
• used on tubing as small as 1/16" in diameter to vessels as large as 4 feet across
• used on stainless steel or glass and work well on most plastics

TECHNOLOGY

Pulsed Ultrasonic Air Detection:
By developing its patented, Pulsed Ultrasonic technology for air detection, Introtek has overcome many of the problems associated with Continuous Wave systems. With Introteks system, the transmit signal consists of short bursts or pulses of Ultrasonic energy. After each pulse, the electronics looks for a return signal within a specific window of time, which corresponds to the time it takes for the energy to pass through the tube filled with liquid. Only signals received during this window of time will indicate fluid. Signals which have been interrupted by air will not be received within this window, thus causing our electronics to send out the appropriate air warning indication to the operator. Introteks Pulsed Technology: Features and Advantages:

Pulsed Technology. Patented technology allows greater applications flexibility; its unaffected by optical, dielectric, or physical properties of tubing or fluid.

 Non-Invasive Design. With no interaction between Introtek sensors and the fluid (or air) within a tubing or vessel, liquid compatibility and sterility concerns are eliminated. Also, system maintenance is dramatically reduced over that of invasive systems.

Solid State Design. With no moving parts in its design, mechanical failure is entirely eliminated.

No Calibration Required. High-efficiency system design provides optimum performance while eliminating the need for intricate and tedious field calibration.

High Noise Immunity. Introteks pulse technology greatly reduces the effect of electrical and RF noise to its air detection components.

Design Flexibility. A variety of standard designs are available, from single stand-alone systems to low cost/high volume modular designs for O.E.M. applications. Introtek can also develop custom sensors and electronicsfrom concept to completion.