Emissivity ntawm tus pas ntsuas kub infrared Digital Tsis yog-hu rau Pyrometer Xim LCD : Most organic materials and painted or oxidized surfaces have an emissivity of 0.95 (pre-set in the unit). Inaccurate readings will result from measuring shiny or polished metal surface. To avoid the situation, cover the surface to be measured with masking tape or flat black paint. Measure the tape or painted surface when the tape or painted surface reach the same temperature as the material underneath.
