G - Physics – 01 – N
Patent
G - Physics
01
N
358/5
G01N 1/10 (2006.01) G01N 1/02 (2006.01) G01T 7/02 (2006.01) G21C 17/00 (2006.01)
Patent
CA 1150421
ABSTRACT OF THE DISCLOSURE: A sample-taking appliance comprises several sensors arranged on a turntable like sensor carrier in such a manner that the application areas of the small sensor sponges decrease stepwise from the first to the last sensor. By simple rotation of the turntable the sensors can be brought successively into a working position. The sensor carrier is preferably accommodated in a housing which is open at the bottom and which is raisable and lowerable in the frame of the appliance by, for example, a threaded spindle. The threaded spindle is driven by an electric motor. For each sampling the sensor carrier is lowered until the cell voltage cor- responds to a predetermined desired value. This produces sufficiently precise and reproductible measured values for the electrolytic current for ascertaining the removed layer thickness. The appliance makes it possible to take material samples even from locations of high radiation loading. The material layers removed as samples lie concentrically above each other so that the graduation of the application areas comes into full effect and the material samples taken by the small sponges and the radioactivity contained therein are not falsified.
373442
Gesellschaft Zur Forderung Der Forschung An Der Eidgenossischen
Robic Robic & Associes/associates
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