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9.3 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 54: Adjustment of the emissivity in the software PIX Connect (menu Tools/ Configuration/ Device)
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