Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1982-02-19
1985-05-07
Bernstein, Hiram H.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422103, 422 88, 436 2, 73 407, 7386386, 7386452, G01J 150
Patent
active
045157510
ABSTRACT:
An apparatus and method for measuring minute quantities of moisture and other contaminants within sealed enclosures such as electronic assemblies which may be subject to large external atmospheric pressure variations.
An array of vacuum quality valves (20 thru 32) is arranged to permit cleansing of the test apparatus of residual atmospheric components from a vacuum source (13). This purging operation evacuates a gas sample bottle (36), which is then connected by valve settings to provide the drive for withdrawing a gas sample from the sealed enclosure under test into the sample bottle through a colometric detector tube (Drager tube) (19) which indicates moisture content. The sample bottle (36) may be disconnected and its contents (drawn from the test enclosure) separately subjected to mass spectrograph analysis. The use of an inert reference gas (12) admitted during the test, facilitates the determination of free volume and internal pressure within the test unit.
REFERENCES:
patent: 2429694 (1947-10-01), King
patent: 3399973 (1968-09-01), Grosskopf
patent: 3429186 (1969-02-01), Price et al.
patent: 3539302 (1970-11-01), Dreckmann
patent: 3903745 (1975-09-01), Bolser
patent: 4173895 (1979-11-01), Pecor
Bernstein Hiram H.
The United States of America as represented by the United States
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