Method, a measuring cell and a system for measuring very small heat changes in a sample
US6764215B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2002 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Jun 28, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/4846
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a method, a measuring cell and a system for measuring very small heat changes in a sample. The system comprises a measuring cell 16 for containing the sample during the measurement process, at least one electromagnetic radiation unit 14 for radiating one or several samples with modulated monochromatic or polychromatic radiation 46 inside said measuring cell 16. Said measuring cell 16 comprises at least one acoustic transducer 22 for generating a first output signal V(t) and at least one heat measuring device 24 for generating a second output signal T(t). Both signals are connectable to a combining unit 18 that generates an information signal by means of a reference signal f(t). Said information signal is connectable to a signal processing unit 20 for determining at least one relevant reaction parameter as a function of the measured heat change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.