Design and Realisation of High Accuracy Emissivity Measurement Instruments for Radiation Thermometry

Emissivity is the quantity representing the radiative properties of materials that must be prior measured precisely to undertake accurate measurements for radiation thermometry. This work presents the development and validation of three emissivity measurement instruments to undertake studies on emissivity behaviours for materials with complex surface conditions from 200 to 1150 °C. These instruments aim to offer accurate emissivity references for use in non-contact temperature measurements and materials science.