Rapid measurement of the thermal diffusivity and thermal conductivity of various kinds of solids, powders and liquids.
Xenon Flash Analysis (XFA) is the most commonly used technique for the measurement of the thermal diffusivity and thermal conductivity of various kinds of solids, powders and liquids. We use a Linseis XFA 600 to irradiate samples with a programmed energy pulse, and the resulting temperature rise is measured by a high speed IR detector. Thermal diffusivity values are computed from the temperature rise versus time data. The XFA enables determination of the thermal diffusivity of several samples at the same time. Thermal conductivity is then calculated by multiplying the thermal diffusivity values with the customers own density and specific heat values. This method is therefore less accurate that the Guarded Heat Flow Meter technique. Usage requires academic oversight.