热谱分析目前成为较广泛应用的一种仪器分析手段。主要热分析仪器有差热分析仪(DTA),差动热分析仪(DSC),热重分析仪(TG)以及热机械分析仪(TMA)等。样品在这些仪器上分析后,最终在于获得一张热谱图,记录下样品随着温度的变化而产生的某方面的物理量变化。因此,对温度的控制成为能否获得一张含有丰富信息热谱图的重要条件之一。热谱分析仪器上所用的温控单元,由最初的自耦调压器,发展到数控电路,无论在操作方便和控制精度方面,都获得了较大进 Thermogram analysis is now a more widely used instrumental analysis tool. The main thermal analysis instruments are DTA, DSC, TG and TMA. After the samples are analyzed on these instruments, the final result is to obtain a thermogram that documents some changes in the physical quantities of the sample as the temperature changes. Therefore, the control of temperature becomes one of the most important conditions for obtaining rich information thermograms. Thermostat unit used in thermal analysis instrument, from the initial auto-voltage regulator, developed to the NC circuit, both in terms of ease of operation and control accuracy, have gained more