X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1988-07-22
1991-11-12
Church, Craig E.
X-ray or gamma ray systems or devices
Specific application
Absorption
378 53, G01B 1502
Patent
active
050654179
ABSTRACT:
A method and an apparatus for determining the partial density, or concentration, of various substance components in a liquid, by calculating the absorption of two different gamma radiations, one of higher energy and one of lower energy. To this end, the liquid is carried in a conduit system, irradiated by the two gamma radiations, and the attenuation of their intensity is detected. A specific combination of the counting rates of the two radioactive sources is used for determining the partial density of two substances in a three-substance system. The primary field of application is the continuous, contactless monitoring of the acid and metal concentration in pickling baths for chemical descaling, and for roughening and cleaning of metal surfaces.
REFERENCES:
patent: 3062223 (1962-11-01), Malin et al.
patent: 3074271 (1963-01-01), Hill
patent: 4200792 (1980-04-01), Fanger et al.
Measurement and Control, vol. 10, No. 3, Mar. 1977, pp. 83-87; D. R. Carlson: "Level and Density Measurement Using Non-Contact Nuclear Gauges" (*p. 86, para 3.1; FIG. 8*).
Stahl U. Eisentl , vol. 85, No. 21, Oct. 21, 1965, pp. 1335-1340; no translation.
Behringer Jurgen
Evers Dieter
Schonert Dieter
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