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US 5,285,071 AGranted
Fluid cell substance analysis and calibration methods
OwnerRobert B. LaCountinventor
Life of this patent
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OwnerRobert B. LaCountinventor
Estimating the term…
A furnace with two hot zones holds multiple analysis tubes. Oxidized gases flow from outlets of the tubes to individual gas cells. The cells are sequentially aligned with an infrared detector, which senses the composition and quantities of the gas components. Each elongated cell is tapered inward toward the center from cell windows at the ends. Volume is reduced from a conventional cell, while permitting maximum interaction of gas with the light beam. Reduced volume and angulation of the cell inlets provide rapid purgings of the cell, providing shorter cycles between detections. For coal and other high molecular weight samples, from 50% to 100% oxygen is introduced to the tubes. Cells are suspended from adjustable holders on a frame which is spaced from a table. The table is moved by a linear motor and a fixed platen. Sides of the table are shielded to prevent electromagnetic and magnetic motor interference with detected results. The gas cells are calibrated for carbon dioxide and water vapor with a mass flow controlled oxidized fuel gas from a single analyzed source of such gas, oxygen and inert gas. Other calibration gases may be included, generated or added in the calibration gas stream.
Gas test cell apparatus comprising plural cells, each connectable to a gas conduit, a frame for mounting the cells, a table for supporting the frame, slides connected to the frame and rods connected to the slides, wherein the cells are aligned parallel to each other and are mounted in holders connected to the rods, a motor mounted within the table and a platen along the table for moving the table transversely, and sequentially aligning the cells with an infrared light beam source for projecting an energy beam through the cells, and a detector aligned with the source for receiving light projected from the source through the cells, the motor and platen cooperating for moving the table and frame and moving each cell into alignment and out of alignment with the infrared light beam source.
A fluid analyzing apparatus comprising a table, a frame connected to the table, suspenders connected to the frame and holders connected to the suspenders for mounting plural fluid cells aligned parallel and spaced from the table, a motor and a fixed platen for moving the table transversely, an infrared light beam source for projecting an infrared light beam through the cells, and a detector aligned with the source for receiving light projected through the cells, the motor and platen cooperating for moving each cell into alignment and out of alignment with the infrared light beam source and detector.
A fluid analyzing apparatus comprising a table, first and second bearing blocks mounted on the table, axles mounted on the bearing blocks, rotary holders mounted on the axles, the holders having circular openings extending through the holders parallel to the axles at spaced intervals in the holders, plural elongated cells, each having spaced first and second ends, the first ends of the cells being mounted in the openings in the first holder, and the second ends of the cells being mounted in the openings of the second holder, a stepping motor mounted on the table and connected to at least one of the holders for rotating the holders and cells in steps, an infrared light beam source for projecting an infrared light beam into a first end of one cell, a detector aligned with the second end of said one cell for receiving light projected from the source through the said one cell, the motor and holders cooperating for moving each cell successively into alignment and out of alignment with the infrared light beam source and detector.
A fluid analyzing apparatus comprising a table, holders adjustably connected to the table for mounting plural fluid cells, wherein the fluid cells are aligned parallel to each other and spaced from the table, a motor connected to the table and cooperating with a fixed platen for moving the cells on the table sequentially into alignment with an infrared light beam source for projecting an infrared light beam sequentially through the cells, and a detector aligned with the source for receiving light sequentially projected through the cells, the motor and platen cooperating for moving each cell into alignment and out of alignment with the infrared light beam source and detector.
Dependencies are inferred from the claim text.