Level detection device for enclosed tanks

Details Level detection device for enclosed tanks Level detection device for enclosed tanks

1979-09-13

1981-05-19

Willis, Davis L.

Radiant energy

Invisible radiant energy responsive electric signalling

Fluent material level signalling

G01F 2300

Patent

active

042687535

ABSTRACT:
A level detection system utilizing backscattered radiation in which a radiation source is vertically arranged between two radiation detectors along the exterior of a tank, the system automatically moving up or down along the height of the tank in response to radiation received by the detectors to indicate the level of material within the tank. Variations in wall thickness of the tank are automatically compensated for by comparing the electronic signals produced by the two detectors and using the differential signal to drive the system.

REFERENCES:
patent: 2323128 (1943-06-01), Hare
patent: 2348810 (1944-05-01), Hare
patent: 2378219 (1945-06-01), Hare
patent: 2675478 (1954-04-01), Brunton et al.
patent: 2714167 (1955-07-01), Herzog
patent: 3553636 (1971-01-01), Baird

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