Radiant energy – Invisible radiant energy responsive electric signalling – Fluent material level signalling
Patent
1981-12-10
1985-03-05
Anderson, Bruce C.
Radiant energy
Invisible radiant energy responsive electric signalling
Fluent material level signalling
G01F 2300
Patent
active
045033307
ABSTRACT:
The level or tilt angle of the surface of a bed of solids in the round portion of an elongated rotatable chamber is determined by directing a collimated gamma ray beam transversely through the chamber to a scintillation radioactive count rate detector. The chamber is either horizontal or inclined from horizontal at an angle of less than 30.degree.. At least three equal length transversely spaced apart radioactive scans or measurements with the source located at three different points are required. The scans must lie in approximately the same transverse plane and one of the scans must be transversely located between the other two scans. Best results are obtained when at least four scans are taken with the transverse plane of the scans perpendicular to the longitudinal axis of the chamber. The method will usually be applied at a number of axial points under dynamic conditions so that the contour of the bed may be plotted.
REFERENCES:
patent: 2323128 (1943-06-01), Hare
patent: 2674695 (1954-04-01), Grace
patent: 2714167 (1955-07-01), Herzog
patent: 3170064 (1965-02-01), Martin
patent: 4056349 (1977-11-01), Parisis et al.
Anderson Bruce C.
Atlantic Richfield Company
Folzenlogen M. David
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