The WL 376 can be used to test various non-metallic building materials for thermal conductivity in accordance with DIN 52612. The scope of delivery includes samples of various materials: Armaflex thermal insulation boards, grey cardboard, PMMA, expanded polystyrene, PS, POM, cork and plaster. All samples have the same dimensions and are inserted between a heated plate and a water-cooled plate. A clamping device ensures reproducible contact pressure and thermal contact. The hot plate is heated by an electric heating blanket. On the cold plate, the temperature is obtained by means of water cooling. Sensors measure the temperatures at the inlet and outlet of the cooling water, as well as in the centre of each plate.