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Sensors 2017, 17(3), 552;

The 3-Omega Method for the Measurement of Fouling Thickness, the Liquid Flow Rate, and Surface Contact

Department of Engineering, Aarhus University, Hangoevej 2, 8200 Aarhus N, Denmark
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 11 December 2016 / Revised: 2 March 2017 / Accepted: 6 March 2017 / Published: 9 March 2017
(This article belongs to the Section Physical Sensors)
Full-Text   |   PDF [4195 KB, uploaded 10 March 2017]   |  


The 3-omega method is conventionally used for the measurement of thermal conductivity in solid samples. The present work includes the experimental characterization and proof-of-concept measurements of sensor concepts, based on the 3-omega method. It is shown that this method can be used to measure fouling layers with a thickness of 10 to 400 μm, to conduct the measurement of flow rates with a high precision, and finally, as a simple on-off contact sensor with a fast response time. View Full-Text
Keywords: sensors; 3-omega; biofouling; fouling; flow; contact sensors; 3-omega; biofouling; fouling; flow; contact

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Clausen, C.; Pedersen, T.; Bentien, A. The 3-Omega Method for the Measurement of Fouling Thickness, the Liquid Flow Rate, and Surface Contact. Sensors 2017, 17, 552.

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