Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1978-05-30
1981-02-17
Waring, Alvin H.
Communications: electrical
Condition responsive indicating system
Specific condition
340517, 340617, 250357, G01N 2312
Patent
active
042518105
ABSTRACT:
Apparatus for and methods of remotely monitoring outputs of Geiger-Mueller tubes including cables for connecting individual Geiger-Mueller tubes to a central monitoring station wherein electronics for sensing the output of each tube is located at the central station rather than juxtaposed with each tube. The electronics are used to trigger individual alarms and a general alarm whenever radiation levels sensed by the Geiger-Mueller tubes pass a predetermined threshold. The apparatus and method are especially useful for monitoring levels of materials in hoppers, or the like, by sensing the impingement of or absence of beams of radiation on Geiger-Mueller tubes.
REFERENCES:
patent: 2323128 (1943-06-01), Hare
patent: 2713124 (1955-07-01), Graham
patent: 2972050 (1961-02-01), Allen
patent: 3389250 (1968-06-01), Clemens
patent: 3560801 (1971-02-01), McCarther
patent: 3594575 (1971-07-01), Shoemaker
patent: 3668392 (1972-06-01), Bajek et al.
patent: 3944830 (1976-03-01), Dissing
Kay-Ray, Inc.
Waring Alvin H.
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