Relative humidity sensing apparatus
US5345821A · kind A · utility
11Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Jan 15, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/225
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A relative humidity sensor includes a printed circuit board having a central passageway therethrough and a dielectric film extending across the passageway with electrodes mounted on that portion of the film in the passageway so as to generate a capacitance which will vary directly with the amount of moisture content in the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.