| 摘要 |
PROBLEM TO BE SOLVED: To substantially improve resolution for a change by controlling a driving variable in a differential analysis technique and using a variable change ratio of the driving variable. SOLUTION: In a differential scan analysis, a temperature is a driving variable and a heat transfer is a characterizing differential physical parameter. A differential scan analyzer 111 measures a difference of heat transfers between a sample saucer 112 and a reference substance saucer 113 supported by an internal thermoelectric disk 116 in a furnace chamber 124. The disk 116 functions as a heat transfer route from a furnace 119 to the sample saucer 112 and substance saucer 113, and is used as a common material of a differential thermocouple. A microcomputer 127 controls a power to the furnace 119 with the use of a heater controller 125, thereby controlling temperatures. A personal computer 110 and a digital plotter 109 are used to analyze, store and display data. In an application example of the differential scan analysis, the larger a difference of a maximum heating ratio and a basic heating ratio and the smaller a sample temperature deviation in a modulation period, the more sensitivity and resolution are improved. |
