Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1988-06-29
1989-08-29
Dees, Carl F.
Measuring and testing
Gas analysis
Moisture content or vapor pressure
G01N 100
Patent
active
048605840
ABSTRACT:
A moisture sensing element is disclosed which comprises an electrically continuous article comprising a multi-compositional, multi-phase composite composition comprising as phases thereof (i) an electrically conducting or semiconducting substrate, (ii) an inorganic oxide composition layer in proximity to at least a portion of the surface of the electrically conducting or semiconducting substrate and (iii) an inorganic crystalline molecular sleeve composition layer upon at least a portion of the surface of the inorganic oxide composition layer, wherein the different phases of the composite composition are substantially contiguous and exhibit at least one of a distinct compositional heterogeneity and a distinct structural heterogeneity of one phase to the other; and at least one electrode affixed to the article in current carrying relationship so that the current carried by the electrode passes through at least a portion of the inorganic crystalline molecular sieve composition layer.
REFERENCES:
patent: 3186225 (1965-06-01), Freeman, Jr.
patent: 4791083 (1988-03-01), Pellet et al.
patent: 4814316 (1989-03-01), Pellet et al.
Coughlin Peter K.
Flanigen Edith M.
McLeod, Jr. Donald
Mercer William C.
Dees Carl F.
McBride Thomas K.
UOP
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