Title :
Precise microwave measurement of liquid level
Author :
Hoffmann, Karel ; Skvor, Zbynek ; Prihoda, Milan
Author_Institution :
Fac. of Electr. Eng., Czech Tech. Univ. in Prague, Prague, Czech Republic
Abstract :
A simple interferometric waveguide setup has been developed, enabling for precise distance measurement of liquid level. Total reflection from the liquid surface is not necessary. For the most common case of lossy liquids, reflection phase must be determined properly. This may be accomplished by the use of a waveguide short for calibration. The setup was tested in measurement of water level. Resolution of the order of micrometers was achieved in X-band.
Keywords :
calibration; distance measurement; interferometry; level measurement; micrometry; microwave measurement; waveguides; X-band micrometer; calibration; interferometric waveguide setup; liquid level microwave measurement; liquid surface reflection; lossy liquid; precise distance measurement; reflection phase; water level measurement; Distance measurement; Liquid waveguides; Liquids; Microwave measurements; Microwave theory and techniques; Reflection; Surface waves; Microwave interferometry; distance measurement; magic tee;
Conference_Titel :
Microwave Measurement Conference (ARFTG), 2012 79th ARFTG
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4673-1229-5
Electronic_ISBN :
978-1-4673-1230-1
DOI :
10.1109/ARFTG79.2012.6291194
