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Twisted Pair Of Insulated Wires Senses MoistureSensitivity of electronic moisture sensor to low levels of moisture increased by new electrode configuration. Moisture-sensing circuit described in "Low-Cost Humidity Sensor" (NPO-16544). New twisted pair of wires takes place of flat-plate capacitor in circuit. Configuration allows for thermal expansion and contraction of polymer while maintaining nearly constant area of contact between polymer and wires.
Document ID
19890000343
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Laue, Eric G. (Caltech)
Stephens, James B. (Caltech)
Date Acquired
August 14, 2013
Publication Date
July 1, 1989
Publication Information
Publication: NASA Tech Briefs
Volume: 13
Issue: 7
ISSN: 0145-319X
Subject Category
Electronic Components And Circuits
Report/Patent Number
NPO-17111
Accession Number
89B10343
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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