Measure the radiation intensity (= apparent temperature) from the reflecting source using the
following settings:
■
Emissivity: 1.0
■
D
obj
: 0
You can measure the radiation intensity using one of the following two methods:
10589003;a2
Figure 18.3 1 = Reflection source
3
Note: Using a thermocouple to measure reflected apparent temperature is not recom-
mended for two important reasons:
■
A thermocouple does not measure radiation intensity
■
A thermocouple requires a very good thermal contact to the surface, usually by
gluing and covering the sensor by a thermal isolator.
18.2.1.1.2
Method 2: Reflector method
Crumble up a large piece of aluminum foil.
1
Uncrumble the aluminum foil and attach it to a piece of cardboard of the same size.
2
Put the piece of cardboard in front of the object you want to measure. Make sure that the side
with aluminum foil points to the camera.
3
Set the emissivity to 1.0.
4
Publ. No. T559733_en-US Rev. a571 – ENGLISH (EN) – November 4, 2011
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18 – Thermographic measurement techniques
