Measuring device, which eliminates complex and expensive optical components by electronically sensing dewpoint of water vapor in gas, employs piezoelectric crystal oscillator, supportive circuitry, temperature regulators, and readout.
Quartz-crystal-oscillator hygrometer
NASA Tech Briefs ; 1 , 3
1977-01-01
Miscellaneous
No indication
English
NTRS | 1945
|High-Performance Miniature Hygrometer
Online Contents | 1994
OptiSonde chilled mirror hygrometer
Emerald Group Publishing | 2008
OptiSonde chilled mirror hygrometer
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|