Radiant energy – Automatic/serial detection of similar sources
Patent
1980-10-27
1986-04-15
Smith, Alfred E.
Radiant energy
Automatic/serial detection of similar sources
2502521, 414416, 422 65, 422 67, G01T 700, G01T 708
Patent
active
045829900
ABSTRACT:
A gamma counter linearly moving two rows of linked trays each having a two-dimensional array of sample tubes. A noncantilevered crane plucks each of the tubes and carries them to the counting well. A coupling mechanism between trays allows the operator to add further trays while the instrument performs analyses on previously added sample tubes. A microprocessor in the instrument allows the operator to place into memory information for the assay contemporaneously with the addition of the new trays. Tabs on the tray interrupt photosensors on the instrument associated with the two channels of trays to properly stop the trays where the fingers on the crane can reach the rows of tubes. The fingers on the crane, when descending to grip a tube, do so off to the side of the tray to avoid contacting and possibly damaging the tops of the tubes. An internal standard of Iodine.sup.129 provides gamma particles and acts as a known sample. A microprocessor within the instrument requires a calibration whenever the power to the instrument is turned on and at a preset time of each day. Additionally, the instrument's microcomputer stores management and service data relating to the quality and the patterns of the instrument's use.
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Fields Carolyn E.
Friedman Eugene F.
Randam Electronics, Inc.
Smith Alfred E.
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