The heat flow meter method is a relative measurement technique based on the principle of steady-state heat transfer. It typically requires calibration of the heat flow constant using standard samples with known thermal conductivity to derive the thermal conductivity, and is generally suitable for low thermal conductivity solid materials, fibrous materials, and porous materials.

The guarded heat flow meter method, an improved technology developed from the heat flow meter method, ensures axial one-dimensional heat transfer during temperature control through specially designed guard structures. This effectively eliminates the impact of lateral heat loss, making it closer to the theoretical one-dimensional steady-state heat flow model.

With over a decade of technical experience in thermal conductivity measurement, XIATECH has launched the TC2110 and TC2120 series of thermal conductivity meters based on the heat flow meter method, as well as the TC2000 series based on the guarded heat flow meter method, in compliance with relevant domestic and international standards such as ASTM E1530, ASTM C518, GB/T 10295, and ASTM D5470. These series inherit multiple core technical advantages of the company in thermal conductivity research, including:

l  Accurate one-dimensional heat transfer model

l  Proprietary temperature control technology and multi-channel synchronous temperature measurement for high-precision temperature control

l  Compact instrument structure and fully automated measurement process

l  Real-time online monitoring of sample thickness or position changes

l Suitable for characterizing thermal conductivity and thermal resistance of materials under different temperatures (customizable) and pressures (customizable)