Introduction To Building Thermography; Important Note; Typical Field Investigations; Guidelines - FLIR ThermaCAM B2 User Manual

7 Introduction to building
thermography
7.1

Important note

All camera functions and features that are described in this section may not be sup-
ported by your particular camera configuration.
7.2

Typical field investigations

7.2.1

Guidelines

As will be noted in subsequent sections there are a number of general guidelines the
user should take heed of when carrying out building thermography inspection. This
section gives a summary of these guidelines.
7.2.1.1

General guidelines

The emissivity of the majority of building materials fall between 0.85 and 0.95.
■
Setting the emissivity value in the camera to 0.90 can be regarded as a good
starting point.
An infrared inspection alone should never be used as a decision point for further
■
actions. Always verify suspicions and findings using other methods, such as con-
struction drawings, moisture meters, humidity & temperature datalogging, tracer
gas testing etc.
Change level and span to thermally tune the infrared image and reveal more details.
■
The figure below shows the difference between a thermally untuned and a thermally
tuned infrared image.
10552103;a2
Figure 7.1 LEFT: A thermally untuned infrared image; RIGHT: A thermally tuned infrared image, after
having changed level and span.
Publ. No. 1557882 Rev. a156 – ENGLISH (EN) – February 28, 2006
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