Radiant energy – Inspection of solids or liquids by charged particles – Including a radioactive source
Patent
1973-09-19
1976-01-20
Dixon, Harold A.
Radiant energy
Inspection of solids or liquids by charged particles
Including a radioactive source
250356, 250372, 250383, G01N 2300
Patent
active
039341399
ABSTRACT:
An apparatus for continuously measuring with safety and high accuracy the calorific power of a sample containing hydrocarbon compounds and sulfur, such as crude oil and petroleum products. The apparatus supplies two energy levels of radioactive rays to be absorbed by the sample, a first supply of the radioactive rays having an energy level at which the mass absorption coefficient of carbon differs from that of hydrogen, and a second supply of rays having an energy level at which the mass absorption coefficient of carbon is approximately equal to that of hydrogen. The first rays yield a signal varying with the concentrations of hydrogen, carbon and sulfur in the sample, while the second rays yield a signal varying with the concentration of sulfur in the sample. The signals are density compensated, and mathematically correlated according to a predetermined arithmetic formula to determine the calorific power of the sample hydrocarbon compound.
REFERENCES:
patent: 2706789 (1955-04-01), Hughes
patent: 2883542 (1959-04-01), Jacobs
patent: 2899555 (1959-08-01), Fries
patent: 2937275 (1960-05-01), Thourson et al.
patent: 3254214 (1966-05-01), Bennett
Ishiguro Takeshi
Ohata Shuichi
Takeuchi Yoji
Dixon Harold A.
Yokogawa Electric Works, Ltd.
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