Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
In a microadsorption detector, means forming a plurality of adsorption detector cells serially disposed in close proximity to each other along the flowpath for a fluid stream to be detected, each of said cells including a thermally responsive sensing element for deriving an output determinative of the adsorption in the respective cell of certain constituents of the fluid stream, THE IMPROVEMENT WHEREIN, at least one of said cells including active adsorptive packing material and the remainder of said cells having relatively inactive packing material, there are at least three of said serially disposed adsorption detection cells, means combining the individual outputs of each of said cells in pairs to form at least two separate composite output signals, such composite signals each comprising a combination of the outputs of at least two cells and means comparing the composite output signals.
Claim 2
Dependent Claim
139 words
In a microadsorption detector, means forming a plurality of adsorption detector cells serially disposed in close proximity to each other along the flowpath for a fluid stream to be detected, each of said cells including a thermally responsive sensing element for deriving an output determinative of the adsorption in the respective cell of certain constituents of the fluid stream, THE IMPROVEMENT WHEREIN, at least one of said cells including active adsorptive packing material and the remainder of said cells having relatively inactive packing material, there are at least three of said serially disposed adsorption detection cells, means combining the individual outputs of each of said cells in pairs to form at least two separate composite output signals, such composite signals each comprising a combination of the outputs of at least two cells and means comparing the composite output signals.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 wherein said plurality of serially disposed adsorption cells comprises at least four of said adsorption cells.
Claim 4
Dependent Claim
42 words
The apparatus of claim 1 wherein at least two of said cells includes a relative active adsorptive packing material for a constituent of the fluid stream as compared to the adsorptive characteristics of the packing material, if any, of said third cell.
Claim 5
Dependent Claim
20 words
The apparatus of claim 1 wherein said comparing means includes a recorder for recording the separate composite signals for comparison.
Claim 6
Dependent Claim
32 words
The apparatus of claim 1 wherein said combining means includes a pair of wheatstone bridge networks, and wherein said comparing means compares the separate outputs of said pair of wheatstone bridge networks.
Claim 7
Dependent Claim
77 words
The apparatus of claim 2 wherein at least three of said detection cells each includes a relatively inert adsorptive fill material, if any, as compared to a relatively active fill material disposed within said fourth cell, means for combining the outputs of two pair of said cells to produce a pair of composite outputs, and means for comparing the composite outputs to derive an output which is relatively independent of the rate of flow of said stream.
Claim 8
Dependent Claim
32 words
The apparatus of claim 1 including a liquid chromatographic column disposed upstream of said detector cells such that said detector cells are disposed to detect the effluent liquid stream of said column.