Changing The Emissivity - FLIR ix Series User Manual

11.15

Changing the emissivity

General
For very precise measurements, you may need to set the emissivity, instead of se-
lecting a surface property. You also need to understand how emissivity and reflectiv-
ity affect measurements, rather than just simply selecting a surface property.
Emissivity is a property that indicates how much radiation originates from an object
as opposed to being reflected by it. A lower value indicates that a larger proportion
is being reflected, while a high value indicates that a lower proportion is being reflect-
ed.
Polished stainless steel, for example, has an emissivity of 0.14, while a structured
PVC floor typically has an emissivity of 0.93.
Procedure
Follow this procedure to set the emissivity:
SEE ALSO To read more about emissivity, see section 18 – Thermographic measurement tech-
niques on page 59.
Publ. No. T559733_en-US Rev. a571 – ENGLISH (EN) – November 4, 2011
1 Push the left selection button (Menu).
2 Use the navigation pad to go to Measure.
3 Push the left selection button (Select). This will display the Measure sub-
menu.
4 Use the navigation pad to select Advanced.
5 Push the left selection button (Select). This will display the Advanced sub-
menu.
6 Use the navigation pad to do either of the following:
Set a value for emissivity
■
Select a material in the list of materials
■
7 Push the left selection button (Select) to confirm the choice and leave the
menu.
11 – Using the camera
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