The Discovery Laser Flash DLF 1200 is a compact benchtop instrument for the measurement of thermal diffusivity, thermal conductivity, and specific heat capacity of materials from room temperature to 1200˚C. It features a proprietary laser source with 17 Joules of energy for testing of the widest range of samples under the most demanding conditions. Productivity is no problem with the four-sample tray design. It is the only benchtop light flash instrument available with a laser pulse source for enhanced precision, accuracy and capabilities beyond competitive Xenon light source designs.
Current Configuration:
- Samples can be run under air, nitrogen, or vacuum
- Sample dimensions accepted: Round 12.7 mm and 25.4 mm (tolerance ±5 mil)
- Maximum thickness: 10 mm (recommended tolerance ±1 mil)
- Measurements can take around one hour per temperature setting
- For materials that are transparent or translucent a very thin and opaque layer of high thermal diffusivity material must be deposited on the faces of the samples. For best results, one should select a coating that has a high reflectivity (low emissivity), such as gold or platinum. Best results are obtained with vacuum sputtering of a gold, silver, nickel, or platinum layer with < 1 μm thickness. This coating is then over-coated using an aerosol spray coating of graphite.
- Reference materials may be needed for determination of the heat capacity.