本文介绍了WRT—1型微量热天平的工作原理和指标,重点讨论了天平的稳定性问题。WRT—1型填补了国内1微克灵敏度微量热天平的空白,达到或接近目前国外同类产品的水平。由于试样量只需零点几毫克,因而试样内部温度很小;测定试样的转变温度正确;失重曲线明显;分辨率高;重现性好。 This paper introduces the work principle and index of WRT-1 trace calorimeter, and focuses on the stability of balance. WRT-1 type to fill the domestic 1 microgram sensitivity trace calorimeter blank, at or near the current level of similar foreign products. As the sample volume just a few milligrams, so the sample internal temperature is very small; Determination of the sample transition temperature is correct; Weight loss curve was clear; High resolution; Reproducibility.