Thermal measuring and testing – Thermal gravimetric analysis
Patent
1987-06-08
1989-06-13
Yasich, Daniel M.
Thermal measuring and testing
Thermal gravimetric analysis
73 76, 177 2514, G01G 1900, G01N 2204
Patent
active
048387053
ABSTRACT:
The apparatus determines the content by weight of a volatile fluid, such as water, in a sample under test where the volatile fluid is typically less than one-half percent by weight by heating the sample in a sealed chamber to evaporate the volatile fluid under test. The evaporated fluid is passed through a collector which senses and collects only the evaporated volatile fluid of interest which collection correspondingly increases the weight of the collector. Measuring the weight change of the collector and comparing it with the initial weight of the test sample provides a determination of the percent of the sensed volatile fluid in the test sample.
REFERENCES:
patent: 676858 (1901-06-01), Arndt
patent: 3493063 (1970-02-01), Bowers
patent: 3909598 (1975-09-01), Collins et al.
patent: 4050995 (1977-09-01), Bredeweg
patent: 4554132 (1985-11-01), Collins
"A Semiautomatic Electromagnetic Balance . . . Moisture in Cellulose", by K. A. Lincoln, 12/2/58, U.S. Naval Radiological Defence Lab., Report, USNRDL TR-287, 23 pages.
Acord Dennis E.
Byers, Jr. Charles H.
Michl Terry L.
Arizona Instrument Corporation
Yasich Daniel M.
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