High-Temperature Thermal Conductivity Tester for Insulating and Graphite Materials

This high-temperature thermal conductivity tester for insulating and graphite materials uses the direct-current longitudinal heat flow method to measure thermal conductivity at elevated temperatures. It is designed for conductive materials, including metallic conductors such as copper and stainless steel, as well as non-metallic conductive materials like graphite, supporting research on heat transfer performance under high-temperature conditions. Measurement methods reference national standards GB3651-83 (Methods for measuring high-temperature thermal conductivity of metals) and GB8722-88 (Methods for measuring medium-temperature thermal conductivity of graphite materials). These standards guide the procedure and ensure data reliability and comparability. The instrument is based on the principle of longitudinal heat flow under direct electrical heating, enabling precise thermal conductivity measurements across a wide temperature range. Maximum operating temperatures include room temperature to 600 ℃ and room temperature to 1000 ℃, depending on configuration. The measurement range covers 0.035–40 W/(m·K) and 20–500 W/(m·K), with the applicable range dependent on the material’s electrical conductivity. This capability makes the tester suitable for characterizing both low and high thermal conductivity conductive materials across diverse industrial and research applications.

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