The Guarded Heat Flow Meter (GHFM-02) follows ASTM E1530-19 for testing thermal resistance and thermal conductivity of solids, such as metals, polymers and composites. The easy to operate GHFM-02 follows the trusted steady-state approach, with the addition of a guard to limit the effects of lateral heat loss. This design, allows testing of a wide range of materials with low to medium thermal conductivity.
According to the method, the sample is subjected to a steady-state through-thickness temperature gradient. The thermal conductivity of the sample is obtained by measuring the temperature difference across it, and one additional temperature.
The testing stack is made up of a heater – upper plate, with integrated temperature sensor and heat sink – lower plate with integrated temperature sensor on each side of the sample. Additional temperature sensors are placed near the top and bottom surface of the sample.
|Materials||Metals, Polymers and Composites|
|Thermal Resistance||0.00007 to 0.25 m2 K/W|
|Thermal Conductivity||0.1 to 15 W/mK|
|Measurement Time||Typically 30-60 minutes|
|Temperature||20°C – 30°C|
|Sample Diameter||50.8 mm / 2 in.|
|Maximum Thickness||25.4 mm / 1 in.|