This European 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. NOTE Some specific polymeric materials are translucent (transparent) and might have a transmittance window in a wavelength range where the used pyrometer is sensitive (e. g. polyethylene). The surface temperature of these materials cannot be measured with the contact and the contactless method.
EN 16795:2015 Referenced Document
ASTM E408-13 Standard Test Methods for Total Normal Emittance of Surfaces Using Inspection-Meter Techniques*， 2024-04-20 Update
CIE 85-1989 Solar Spectral Irradiance (1st Edition) (E)
EN 16465:2015 Plastics - Methods for the calibration of black-standard and white-standard thermometers and black-panel and white-panel thermometers for use in natural and artificial weathering
EN ISO 4892-1:2000 Plastics - Methods of Exposure to Laboratory Light Sources - Part 1: General Guidance
ISO 9370:2009 Plastics - Instrumental determination of radiant exposure in weathering tests - General guidance and basic test method
EN 16795:2015 history
2015EN 16795:2015 Plastics - Method for estimating heat build up of flat surfaces by simulated solar radiation