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AssigneeWashington University
InventorsHarry S. Leahey, W. Robert Binns, John W. Epstein, Joseph Klarmann
Estimating the term…
Apparatus for continuously determining the areal density along a length of a material includes a radioactive source and a scintillating receiver. In a first embodiment, the invention measures the thickness of a traveling web simultaneously at multiple points across its full width. The apparatus includes a radioactive source which extends across one side of the web. A detector array, on the opposite side of the web, detects the emission from the source through the web. The array includes scintillating fibers and multi- or single-anode photomultipliers which may be connected by a scintillating or non-scintillating fiber optic elements to the photomultiplier. In a second embodiment, the invention continuously detects the fill level of a plurality of containers as they are conveyed between the receiver and detector. A scintillating fiber receiver may have its fibers arranged either vertically or horizontally. When arranged horizontally, the fibers may be grouped and conduct photons to single anodes of a multi-anode photomultiplier tube to provide direct physical measurement of the fill level. Still another receiver includes a plastic scintillator sheet directly coupled to a photomultiplier tube.
A detector for simultaneously measuring the thickness of a traveling web at multiple locations across its width comprising:
A detector for continuously measuring the thickness of a traveling web along substantially its entire width comprising:
A detector for continuously measuring the thickness of a traveling web at a plurality of positions spaced transversely across its width comprising:
A detector for continuously measuring the thickness of a traveling web at a plurality of locations along its width comprising:
A detector for measuring the fill level of a fluid in each of a plurality of containers as said containers are conveyed past said detector, said detector comprising:
A detector for continuously measuring the areal density of a material at a plurality of positions spaced transversely across said material's width comprising:
A detector for continuously measuring the areal density of a material along a substantial portion of a length dimension thereof, said detector comprising a radiation source extending along said substantial length portion of said material and a receiver means extending along said substantial length portion of said material, said receiving means including means for converting the radiation which passes through the material and is received by the receiving means into a plurality of signals, each of said signals being representative of the instantaneous areal density of said material at a different position along said length dimension of said material as it travels through said detector.
Dependencies are inferred from the claim text.