User's Manual

Table Of Contents
12628.4.7.1 Relative & absolute humidity ............................................................
12628.4.7.2 Definition of dew point ......................................................................
126
28.4.8 Excerpt from Technical Note ‘Assessing thermal bridging and insulation
continuity’ (UK example) ......................................................................................
12628.4.8.1 Credits ...............................................................................................
12728.4.8.2 Introduction .......................................................................................
12728.4.8.3 Background information ...................................................................
12828.4.8.4 Quantitative appraisal of thermal anomalies ....................................
13128.4.8.5 Conditions and equipment ...............................................................
13228.4.8.6 Survey and analysis ..........................................................................
13328.4.8.7 Reporting ...........................................................................................
13529 Introduction to thermographic inspections of electrical installations ......................................
13529.1 Important note ......................................................................................................................
13529.2 General information ..............................................................................................................
13529.2.1 Introduction ...........................................................................................................
13629.2.2 General equipment data .......................................................................................
13729.2.3 Inspection .............................................................................................................
13729.2.4 Classification & reporting ......................................................................................
13829.2.5 Priority ...................................................................................................................
13829.2.6 Repair ....................................................................................................................
13929.2.7 Control ..................................................................................................................
14029.3 Measurement technique for thermographic inspection of electrical installations ...............
14029.3.1 How to correctly set the equipment .....................................................................
14029.3.2 Temperature measurement ...................................................................................
14229.3.3 Comparative measurement ..................................................................................
14329.3.4 Normal operating temperature .............................................................................
14429.3.5 Classification of faults ...........................................................................................
14629.4 Reporting ..............................................................................................................................
14829.5 Different types of hot spots in electrical installations ...........................................................
14829.5.1 Reflections ............................................................................................................
14829.5.2 Solar heating .........................................................................................................
14929.5.3 Inductive heating ...................................................................................................
14929.5.4 Load variations ......................................................................................................
15029.5.5 Varying cooling conditions ...................................................................................
15129.5.6 Resistance variations ............................................................................................
15129.5.7 Overheating in one part as a result of a fault in another ......................................
15329.6 Disturbance factors at thermographic inspection of electrical installations ........................
15329.6.1 Wind ......................................................................................................................
15329.6.2 Rain and snow ......................................................................................................
15429.6.3 Distance to object .................................................................................................
15529.6.4 Object size ............................................................................................................
15729.7 Practical advice for the thermographer ................................................................................
15729.7.1 From cold to hot ...................................................................................................
15729.7.2 Rain showers ........................................................................................................
15729.7.3 Emissivity ..............................................................................................................
15829.7.4 Reflected apparent temperature ...........................................................................
15829.7.5 Object too far away ...............................................................................................
15930 About FLIR Systems .......................................................................................................................
16030.1 More than just an infrared camera .......................................................................................
16130.2 Sharing our knowledge ........................................................................................................
16130.3 Supporting our customers ...................................................................................................
16130.4 A few images from our facilities ...........................................................................................
x Publ. No. T559598 Rev. a554 ENGLISH (EN) September 27, 2011