Level gauge using neutron irradiation

Details Level gauge using neutron irradiation Level gauge using neutron irradiation

1980-08-28

1983-07-26

Willis, Davis L.

Radiant energy

Invisible radiant energy responsive electric signalling

Fluent material level signalling

250392, G01F 2300

Patent

active

043956335

ABSTRACT:
Measurement of the level of materials in bins, hoppers, and the like is effected by a neutron monitoring technique. A sensor is located to move substantially vertically in a guide located in or near the bin or hopper. The sensor contains a fast neutron source, a detector of thermal neutrons, and a moderator-containing material in the vicinity of the detector. In a preferred form of the sensor, the neutron source and thermal neutron detector are separated by lead and cadmium screening, and the moderator-containing material is a sheath of polyethylene around the detector. With sensors of this type, material levels may be sensed whether the material contains a neutron moderator or not.

REFERENCES:
patent: 2378219 (1945-06-01), Hare
patent: 3716711 (1973-02-01), Olesen
patent: 4038548 (1977-07-01), Charlton
patent: 4216376 (1980-08-01), Griffin et al.
patent: 4297575 (1981-10-01), Smith, Jr. et al.

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