DIN EN 16795:2016-03

This standard specifies a method for estimating the temperature increase of a flat polymer surface, due to its solar radiant energy absorption, compared to the ambient temperature. For that purpose, a specimen and black and white reference plates are exposed to simulated solar radiation under specified conditions (simulated solar radiation, ambient air temperature, convective flow). For opaque specimens, a thermally sensitive electrical element at the backside or a pyrometer is used to measure the surface temperature. For translucent specimens, a pyrometer is used to measure surface temperature. Some specific polymeric materials are translucent (transparent) and might have a transmittance window in a wavelength range where the used pyrometer is sensitive (for example, polyethylene). The surface temperature of these materials cannot be measured with the contact and the contactless method. The committee responsible for this standard is NA 054-01-04 AA "Verhalten gegen Umwelteinflüsse" ("Environmental resistance") at DIN Standards Committee Plastics (FNK).