Differential scanning calorimeter
US6561692B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2001 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Jan 26, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/4866
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A modulated differential scanning calorimeter (MDSC) and a method for practicing MDSC that uses two separate temperature difference signals—the difference between the temperatures of the sample and reference positions and the difference between the temperatures of the sample position and a base position. This approach accounts for heat flows associated with the sample and reference pans, and for the difference in sample and pan heating rates to provide more accurate heat flow measurement and improve resolution. It also greatly reduces or eliminates the frequency dependence of the heat capacity calibration factor, which allows for the use of shorter modulation periods. Shorter modulation periods allow the use of higher underlying heating rates, allowing users to decrease the duration of their MDSC experiments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.