Major tech MTi15, Инструкция по эксплуатации

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• This simplification does not work on shiny surfaces or unpainted metals
as they have an emissivity of <0.6. These materials are not good at
radiating energy and are classified as low emissivity.
• To more accurately measure materials with a low emissivity, an emissivity
correction is necessary.
• Adjustment to the emissivity setting will usually allow the Thermal
Imager to calculate a more accurate estimate of the actual temperature.
• For more information please see Emissivity Adjustment to get the most
accurate temperature measurements.
6.9. Emissivity Adjustment
• The correct emissivity value is important to make the most accurate
temperature measurement.
• Emissivity of a surface can have a large effect on the apparent
temperatures that the Thermal Imager observes.
• Understanding the emissivity of the surface, but may not always, allow
you to obtain more accurate temperature measurements.
Note: Surfaces with an emissivity of <0.60 make reliable and consistent
determination of actual temperature problematic. The lower the emissivity,
the more potential error is associated with the Imager’s temperature
measurement calculations. This is also true even when adjustments to the
emissivity and reflected background adjustments are performed properly.
• Emissivity is set directly as a value or from a list of emissivity values for
some common materials.
• The global emissivity displays in LCD Screen as E=x.xx.
• The following table gives typical emissivity of important materials:
6.10. Reflected Temperature
• Using the offset factor, the reflection is calculated out due to the low
emissivity and the accuracy of the temperature measurement with
infrared instruments is improved.
Material Emissivity
Water 0.96
Stainless Steel 0.14
Aluminum Plate 0.09
Asphalt
0. 96
Concrete 0. 97
Cast Iron 0.81
Rubber 0.95
Wood 0.85
Brick 0.75
Material Emissivity
Tape 0. 96
Brass Plate 0.06
Human Skin 0.98
PVC Plastic 0. 93
Polycarbonate 0.80
Oxidized Copper 0.78
Rust
0.80
Paint 0. 90
Soil 0.93