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High accuracy sensors for non-invasive level measurement

High accuracy sensors for non-invasive level measurement

New Products |
By Julien Happich



Designed in response to the needs of medical device manufacturers as well as CE and FDA regulations, the innovation provides a level of measurement accuracy crucial in so many medical devices, including haemodialysis machines and other liquid/ blood handling applications. Featuring ultrasonic technology, the level sensor can easily distinguish between liquid and foam, unlike capacitive sensors, helping to ensure that the presence of non-liquid materials does not interfere with the accuracy of measurements.

For flexible chambers of approximately 20mm diameter the level sensor is designed to clip firmly onto the chamber and can be easily removed as required. The level sensor can be suspended from the chamber or alternatively, mounted to the machine via screw fitting and subsequently positioned against the chamber. Furthermore, it has been specially engineered to ensure continuous operation in temperatures of up to 105°C and can even withstand up to 130°C. Finally, the level sensor is designed to be easily cleaned with most commonly used medical cleaning agents and is sealed to IP67. For rigid chambers, a derivative of this level sensor has been made that dry couples to the chamber and can transmit through most plastics, glass and even aluminium. Multiple levels can be monitored as close as 4mm apart, giving continuous feedback to the machine which can then be used to control pump speed.

CeramTec – www.ceramtec.com

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