Surface Acoustic Wave Microhygrometer

972393

07/01/1997

Event
International Conference On Environmental Systems
Authors Abstract
Content
A microhygrometer has been developed at JPL's Microdevices Laboratory based on the principle of dewpoint/frostpoint detection. The surface acoustic wave device used in this instrument is approximately two orders of magnitude more sensitive to condensation than the optical sensor used in chilled-mirror hygrometers. In tests in the laboratory and on the NASA DC8, the SAW hygrometer has demonstrated more than an order of magnitude faster response than commercial chilled-mirror hygrometers, while showing comparable accuracy under steady-state conditions. Current development efforts are directed toward miniaturization and optimization of the microhygrometer electronics for flight validation experiments on a small radiosonde balloon.
Meta TagsDetails
DOI
https://doi.org/10.4271/972393
Pages
8
Citation
Hoenk, M., Cardell, G., Price, D., Watson, R. et al., "Surface Acoustic Wave Microhygrometer," SAE Technical Paper 972393, 1997, https://doi.org/10.4271/972393.
Additional Details
Publisher
Published
Jul 1, 1997
Product Code
972393
Content Type
Technical Paper
Language
English