Measuring and testing – With fluid pressure – Porosity or permeability
Patent
1988-03-28
1989-08-01
Williams, Hezron E.
Measuring and testing
With fluid pressure
Porosity or permeability
G01N 1508, G01M 300
Patent
active
048523895
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.
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Loebig Craig K.
Mayer Daniel W.
Savick Wayne K.
Modern Controls Inc.
Sjoquist Paul L.
Williams Hezron E.
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