Radiant energy – Invisible radiant energy responsive electric signalling – Fluent material level signalling
Patent
1983-06-17
1986-05-27
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
Fluent material level signalling
378 52, G01T 2310, G01F 2300
Patent
active
045917191
ABSTRACT:
Apparatus for measuring the level of water in an enclosure.
It comprises an assembly, which is constituted by a radiation source located in the vicinity of the enclosure wall, and n radiation detectors separated from the radiation source by a path traversing the enclosure and located at different levels on a same vertical line. After amplification, each detector supplies a signal proportional to the intensity of the radiation received. It comprises means for processing the signals supplied by the detectors, said means being constituted by n-1 dividing circuits, the detectors being connected in pairs to a dividing circuit, which forms the quotient .mu..sub.1 /.mu..sub.i+1, the level then being located in the gap between the detectors, for which the quotient .mu..sub.i /.mu..sub.i+1 is maximum.
REFERENCES:
patent: 3100841 (1963-08-01), Reider
patent: 3160745 (1964-12-01), Foster
patent: 3594575 (1971-07-01), Shoemaker
patent: 3617735 (1971-11-01), Shoemaker
patent: 4268753 (1981-05-01), Murakami et al.
patent: 4369368 (1983-01-01), Bernard et al.
Commissariat a l''Energie Atomique
Fields Carolyn E.
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