| 摘要 |
The invention relates to calorimetric analytical instruments, and more particularly to a differential scanning calorimeter (100), comprising a sample cell (10), a reference cell (8), a first thermal shield (24) adjacently positioned to the sample cell (10), a second thermal shield (24) adjacently positioned to the reference cell (8), at least one heating system capable of heating said sample cell (10), said reference cell (8), said first thermal shield (24) and said second thermal shield (24), and a temperature monitoring device which monitors a temperature differential between the sample cell (10) and the reference cell (8). The temperature of the shields (24) 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.
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