Design Considerations in Advanced Systems for Differential Scanning Calorimetry

摘要: A direct power measuring Differential Scanning Calorimeter, such as the Perkin-Elmer DSC-1B, has both unique capabilities and design problems. The juxtaposition of heating sensing elements in a low thermal mass sample holder puts particular strain on temperature programmer. Programming noise fluctuations are not thermally filtered or smoothed by large furnace systems conventional designs. Also, for rapid programmed cooling experiments quick turn-around times, it is desirable that immediate environment holders be maintained at temperature. Consequently, gradients can exist between surroundings which affect baseline reproducibility linearity. Further, benefits measurement realizable only through considerably more complex construction than typical AT systems. This limited extension DSC to higher temperatures. In this paper these problems will discussed, solutions proposed, performance an experimental extended range incorporating some new features briefly described.