System for controlled humidity tests
US4852389A · kind A · utility
22Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1988 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Mar 28, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/086
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for controlled humidity tests wherein gas transmission through a barrier may be measured, including apparatus for controllably mixing a dry gas and wet gas, for conveying the mixed gas to a test chamber or chambers for measurement of relative humidity and gas transition through a barrier, including gas transmission conduits having a pressure drop of less than 1 percent of ambient pressure, and including conduit temperature controls to maintain a controlled first temperature in the test chamber or chambers, and controlled higher temperatures in all other gas conduits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.