Finding The Emissivity Of A Sample; Step 1: Determining Reflected Apparent Temperature - FLIR A3 F series User Manual

17 – Thermographic measurement techniques
17.2.1

Finding the emissivity of a sample

17.2.1.1

Step 1: Determining reflected apparent temperature

Use one of the following two methods to determine reflected apparent temperature:
17.2.1.1.1 Method 1: Direct method
1 Look for possible reflection sources, considering that the incident angle = reflection angle (a
= b).
10588903;a1
Figure 17.1 1 = Reflection source
2 If the reflection source is a spot source, modify the source by obstructing it using a piece if
cardboard.
10589103;a2
Figure 17.2 1 = Reflection source
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Publ. No. T559743 Rev. a601 – ENGLISH (EN) – April 26, 2012