Title:
DIFFERENTIAL SCANNING CALORIMETER
Document Type and Number:
WIPO Patent Application WO1998020314
Kind Code:
A3
Abstract:
A Differential Scanning Calorimeter (DSC) which has constant calorimetric sensitivity over its entire range of operating temperatures from -200 DEG C. to 540 DEG C. The DSC sensor consists of a pair of thin-film Resistance Temperature Detectors (RTDs) which are used to sense the temperature of a sample and the temperature difference between the sample and an inert reference. The RTDs are supplied with an excitation current which varies according to the temperature of the reference to achieve constant calorimetric sensitivity, independent of the operating temperature.
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Inventors:
DANLEY ROBERT L
READER JOHN R JR
SCHAEFER JOHN W
READER JOHN R JR
SCHAEFER JOHN W
Application Number:
PCT/US1997/020523
Publication Date:
July 02, 1998
Filing Date:
October 31, 1997
Export Citation:
Assignee:
TA INSTR INC (US)
International Classes:
G01K17/00; G01N25/48; (IPC1-7): G01K/
Foreign References:
| US4783174A | 1988-11-08 | |||
| US5224775A | 1993-07-06 | |||
| US5211477A | 1993-05-18 | |||
| US4812051A | 1989-03-14 | |||
| US5599104A | 1997-02-04 | |||
| US5672289A | 1997-09-30 |
Other References:
See also references of EP 0883801A4
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