Differential scanning calorimeter (DSC) with temperature controlled furnace
US7448796B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Oct 31, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/4866
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A differential scanning calorimeter apparatus includes reference and sample cells and controlled temperature shields. The temperature of the shields is controlled such that baseline curvature is reduced by eliminating heat flow from the furnaces to their surroundings (quasi adiabatic conditions) and by controlling heat flow through a well defined solid state heat resistance between the furnaces and a temperature controlled heat sink. The temperature of each shield can be controlled independently to reduce differential heat flow over the whole temperature range of the scan, or maintained at a constant temperature for conventional power compensated DSC operation. The temperature/time profile for each shield can be controlled according to actual furnace temperature, obtained from an empty run, or stored in the computer memory and recalled for sample measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.