FLIR Exx series User Manual page 10

25.2.2 General equipment data .......................................................................................
25.2.3 Inspection .............................................................................................................
25.2.4 Classification & reporting ......................................................................................
25.2.5 Priority ...................................................................................................................
25.2.6 Repair ....................................................................................................................
25.2.7 Control ..................................................................................................................
25.3 Measurement technique for thermographic inspection of electrical installations ...............
25.3.1 How to correctly set the equipment .....................................................................
25.3.2 Temperature measurement ...................................................................................
25.3.3 Comparative measurement ..................................................................................
25.3.4 Normal operating temperature .............................................................................
25.3.5 Classification of faults ...........................................................................................
25.4 Reporting ..............................................................................................................................
25.5 Different types of hot spots in electrical installations ...........................................................
25.5.1 Reflections ............................................................................................................
25.5.2 Solar heating .........................................................................................................
25.5.3 Inductive heating ...................................................................................................
25.5.4 Load variations ......................................................................................................
25.5.5 Varying cooling conditions ...................................................................................
25.5.6 Resistance variations ............................................................................................
25.5.7 Overheating in one part as a result of a fault in another ......................................
25.6 Disturbance factors at thermographic inspection of electrical installations ........................
25.6.1 Wind ......................................................................................................................
25.6.2 Rain and snow ......................................................................................................
25.6.3 Distance to object .................................................................................................
25.6.4 Object size ............................................................................................................
25.7 Practical advice for the thermographer ................................................................................
25.7.1 From cold to hot ...................................................................................................
25.7.2 Rain showers ........................................................................................................
25.7.3 Emissivity ..............................................................................................................
25.7.4 Reflected apparent temperature ...........................................................................
25.7.5 Object too far away ...............................................................................................
26 About FLIR Systems .......................................................................................................................
26.1 More than just an infrared camera .......................................................................................
26.2 Sharing our knowledge ........................................................................................................
26.3 Supporting our customers ...................................................................................................
26.4 A few images from our facilities ...........................................................................................
27 Glossary ...........................................................................................................................................
28 Thermographic measurement techniques ...................................................................................
28.1 Introduction ..........................................................................................................................
28.2 Emissivity ..............................................................................................................................
28.2.1 Finding the emissivity of a sample .......................................................................
28.2.1.1
28.2.1.2
28.3 Reflected apparent temperature ..........................................................................................
28.4 Distance ................................................................................................................................
28.5 Relative humidity ..................................................................................................................
28.6 Other parameters ..................................................................................................................
29 History of infrared technology ......................................................................................................
x
Step 1: Determining reflected apparent temperature .......................
Step 2: Determining the emissivity ...................................................
Publ. No. T559597 Rev. a500 - ENGLISH (EN) - December 10, 2010
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