Characteristic Emissivity - optris PI 200 Operator's Manual

Emissivity

8.3 Characteristic emissivity

In case none of the methods mentioned above help to determine the emissivity you may use the emissivity
table ► Appendix A and Appendix B. These are average values, only. The actual emissivity of a material
depends on the following factors:

temperature

measuring angle

geometry of the surface

thickness of the material

constitution of the surface (polished, oxidized, rough, sandblast)

spectral range of the measurement

transmissivity (e.g. with thin films)
Figure 51: Adjustment of the emissivity in the software PIX Connect (menu Tools/ Configuration/ Device)
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