Radiant energy – Invisible radiant energy responsive electric signalling – Fluent material level signalling
Patent
1978-06-22
1980-08-05
Smith, Alfred E.
Radiant energy
Invisible radiant energy responsive electric signalling
Fluent material level signalling
250390, G01F 2300, G01T 300
Patent
active
042163765
ABSTRACT:
An apparatus for measuring the level of a low mass element material in an enclosed vessel. The apparatus comprises a long probe having a source of fast neutrons and a detector of slow neutrons mounted at one end. The length of the probe ensures the safety of the operator and means are provided for remotely depositing the source in a shielded vessel so that it may be safely transported.
REFERENCES:
patent: 2642541 (1953-06-01), Young
patent: 3716711 (1973-02-01), Olesen
patent: 3848137 (1974-11-01), Ellis
patent: 4039809 (1977-08-01), Bailey
Griffin Leonard H.
Hunt Richard H.
Telfer Alexander
Howell Janice A.
Shell Oil Company
Smith Alfred E.
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