In applications such as engine design, power plant design, powertrain systems, and chemical plants, materials need to undergo testing under high-temperature conditions.

The high-temperature furnace adopts cascade temperature control, with three fixed thermocouples measuring the furnace chamber temperature and three thermocouples measuring the specimen surface temperature.
The armored thermocouples are equipped with elastic connection devices, which can maintain good contact with the specimen surface throughout the test and accurately measure the specimen surface temperature.
A rotating sliding guide bracket is adopted, and the extensometer is fixed on a height-adjustable support. The extensometer is designed with two ceramic rod extension arms that contact the specimen inside the furnace chamber through gaps in the side wall of the high-temperature furnace.
The gauge length of the extensometer can be fixed or variable, covering the requirements of 25mm and 50mm gauge lengths.
The measurement range is ≥15% for tensile absolute strain and ≥5% for compressive absolute strain, complying with the 0.5 class requirements of ISO 9513 and the requirements of ASTM E83 B1, with an applicable temperature ≤1100℃.
