Accurate temperature measurement in the glass industry depends on emissivity, which varies based on multiple factors and specific applications. A specially optimized spectral range ensures maximum glass emissivity, minimizing errors caused by reflectivity and transmissivity. Additionally, this wavelength selection reduces angle dependency, allowing reliable temperature readings even at inclined viewing angles, making it ideal for glass manufacturing and processing applications.

Most metal surfaces have low emissivity, causing them to reflect surrounding heat, which can impact temperature accuracy in thermal imaging. For precise temperature measurement of metals, short-wavelength infrared cameras are recommended, as they are less affected by low emissivity. Alternatively, surface treatments such as coating, painting, or rough texturing can enhance emissivity. Measuring inside cavities, crevices, or textured areas also helps improve accuracy by reducing reflectivity, ensuring reliable thermal data for metal processing applications.

Infrared cameras designed for high-precision thermal imaging typically require a PC connection with dedicated software to process thermal images and temperature measurements. By offloading processing to the PC, the camera maintains a compact design while operating efficiently in higher ambient temperatures. For autonomous operation without a PC, the Optris Xi-series infrared cameras offer built-in processing capabilities, enabling standalone functionality for various industrial applications.