Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1982-05-13
1984-11-20
Bartis, A.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
73 231, 137341, 138 33, 219308, 219311, 219505, 219535, 219543, 219549, H05B 102, G01N 3108, F16L 5300, F24H 112
Patent
active
044840616
ABSTRACT:
A temperature control system for a liquid chromatographic column includes a thin film heater/sensor comprising a foil-like patterned heating element adhesively mounted between a pair of flexible electrically insulative layers. A patterned foil-like temperature sensing element is also coextensively adhesively mounted between the insulative layers in temperature sensing relationship to the heating element. The thin film heater/sensor is wrapped around the chromatographic column and is uniformly compressively secured in contact therewith by a spirally tubularly wound length of flexible wrapping. A remote temperature sensing element controls the heat output of the heating element a linear proportional fashion, thereby maintaining a predetermined temperature gradient over the length of the column. A pre and post-column heaters may be similarly wrapped with a thin film heater/sensors so as to appropriately control the temperature of the liquid entering or leaving the column. The heater/sensor may include a plurality of foil-like patterned heating elements and sensors displaced along the length of the column to define a plurality of heating zones controlled by a patterned foil-like temperature sensing element in sensing relation to respective one of the zones.
REFERENCES:
patent: 2274839 (1942-03-01), Marick
patent: 2961522 (1960-11-01), Hammer
patent: 3043128 (1962-07-01), Ayers
patent: 3063286 (1962-11-01), Nerheim
patent: 3125657 (1964-03-01), Colten
patent: 3225520 (1965-12-01), Burow
patent: 3231716 (1966-01-01), van den Bosch
patent: 3296415 (1967-01-01), Eisler
patent: 3351738 (1967-11-01), Kahn
patent: 3355572 (1967-11-01), Chrow
patent: 3456096 (1969-07-01), Bilbro
patent: 3569665 (1971-03-01), Hager
patent: 4108713 (1978-08-01), Weisz
patent: 4214147 (1980-07-01), Kraver
patent: 4329569 (1982-05-01), Hjortsberg et al.
patent: 4352707 (1982-10-01), Wengler et al.
Sims Carl W.
Zelinka Richard J.
Bartis A.
Haugen Orrin M.
Nikolai Thomas J.
Sys-Tec, Inc.
Tschida Douglas L.
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