On-stream cloud point analyzer

Details On-stream cloud point analyzer On-stream cloud point analyzer

1982-06-07

1985-05-28

Yasich, Daniel M.

Thermal measuring and testing

Transformation point determination

By change in optical property

356434, 374 20, G01N 2117, G01N 2512

Patent

active

045197172

ABSTRACT:
Liquid hydrocarbon samples from a mainstream are diverted through a sample cell in cooling chamber. An optical cloud point detector signals a microprocessor-based control system which controls the charging and cooling of the cell. Cloud point reference level is continuously updated. After each measurement cycle, the control system readjusts the cooling power so that the time interval between the end of the flush cycle and cloud point detection is brought within a predetermined range. The control system switches between several distinct modes of operation automatically.

REFERENCES:
patent: 3031880 (1962-05-01), Findlay
patent: 3143876 (1964-08-01), Wallgren
patent: 3174824 (1965-03-01), Lupfer
patent: 3187557 (1965-06-01), Holbourne
patent: 3457772 (1969-07-01), Chassagne et al.
patent: 3545254 (1970-12-01), Chassagne et al.
patent: 4216669 (1980-08-01), Harding, Jr.
patent: 4240284 (1980-12-01), Nguyen

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