Title :
Optical method of sub-cooled water recognition in dew point hygrometer
Author :
Weremczuk, Jerzy
Author_Institution :
Inst. of Electron. Syst., Warsaw Univ. of Technol., Poland
Abstract :
A new optical method of sub-cooled water recognition in dew point hygrometer is presented. The physical phenomenon of sub-cooled water and its influence on the hygrometer accuracy is described. A hypothesis relating scattering of light by water and ice layers is proposed. A new type of dew point hygrometer based on the silicone mirror with the embedded capacitive detector and multi-section optical detector is presented. Measurement data obtained from the experimental hygrometer are provided
Keywords :
capacitive sensors; hygrometers; light scattering; photodetectors; undercooling; dew point hygrometer; embedded capacitive detector; hygrometer accuracy; ice layers; multi-section optical detector; optical method; photodetector; reference hygrometer; scattering of light; silicone mirror; subcooled water recognition; temperature gradient; water layers; Humidity measurement; Ice; Mirrors; Optical detectors; Optical pumping; Optical saturation; Optical scattering; Performance evaluation; Signal processing; Temperature distribution;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-5890-2
DOI :
10.1109/IMTC.2000.846802
