Portable temperature calibration furnace adopts high stability temperature control instrument, soaking block adopts alloy material with better thermal conductivity. In technology, it is synchronized with the advanced technology at home and abroad, and is in the leading position in the technology of insertion depth, horizontal temperature field, vertical temperature field and so on. When used in the required temperature range, it can easily set and accurately generate the required temperature. It has the characteristics of small size, fast heating, stable temperature control and pollution-free. It can check temperature sensors and instruments as a whole. Therefore, it is easy to carry, easy to use, and easy to fast and reliable temperature calibration. It is widely used in machinery, chemical industry, food, pharmaceuticals and other industries.