Radiant energy – Coded record and readers; invisible radiant energy type
Patent
1977-10-17
1979-01-09
Church, Craig E.
Radiant energy
Coded record and readers; invisible radiant energy type
250273, G01N 2322
Patent
active
041340124
ABSTRACT:
An X-ray spectrometer is provided with two channels for detecting characteristic lines of the X-ray source after being scattered by a sample undergoing analysis, in addition to means for detecting electric signals primarily representative of the concentrations of analytes in the sample. In this way, data is collected which facilitates corrections of the measurements corresponding to individual analytes for deviations from linearity of intensity caused by variations in interelement effects, and by variations in total-solids concentration, or density, of the slurry, or matrix, in which the analytes are distributed, and by variations in particle size of the total-solids in the sample. Correction of measurements of total-solids concentration and average particle size of the matrix for each other and for effects of analytes, may also be made.
The invention may be applied to slurries where the total-solids concentration and particle size may both vary simultaneously from sample to sample, and to dried, solid, or powdered samples where density and particle size may both vary in a similar way.
In an automatic control system, the sample is taken from a slurry and the output signal is employed to control the process to match a norm. The invention may be employed to improve recovery of desired materials and to reduce the discharge of waste materials likely to cause pollution.
REFERENCES:
patent: 3404275 (1968-10-01), Martinelli
patent: 3710104 (1973-01-01), Pavlek
Gurvich Yury M.
Smallbone Allan H.
Bausch & Lomb Inc.
Church Craig E.
Lassagne Theodore H.
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