PCA adopts patented optical system detection principle, equipped with high-performance heating and control system and humanized sample delivery components. PCA can detect not only a variety of bulk materials, but also a variety of film samples. A number of phase transition theoretical experimental studies can be carried out, such as: the size effect of the phase transition of thin film materials, crystallization kinetics, thin film softening, melting temperature, etc. Not only can it innovatively solve the thermal performance analysis of two-dimensional thin film materials, but also can use the thermal performance analysis of three-dimensional bulk materials. It is a multi-functional scientific and technological innovation product. PCA is a non-destructive test, which does not damage the sample and saves costs.