Solar Loading

October 3, 2016By Bob BerryBuilding thermography, Electrical Thermography, General, Training

Solar loading I have been asked quite a lot recently about the effect of sunshine in outdoor electrical inspections. Strong sunlight will cause solar loading, this means that the sun will heat the objects that it is shining on. While we don’t normally worry about colour in thermography, colour will strongly affect the amount of … Read More


September 26, 2016By Bob BerryGeneral

A safety issue has arisen during a thermographic survey of a building. A generator was being used to to provide power for heaters and a blower door, which caused a buildup of carbon monoxide. FYI, please see the safety alert

Does glass have a high, or low emissivity?

September 19, 2016By Bob BerryGeneral

  I have been asked the following by a student; “Does glass have a high or low emissivity? I always assumed that it was quite low as I can see my own reflection with my camera, but tables show it having a high value, Why?” Answer; Glass has a high emissivity. It is often quoted … Read More

Materials for increasing emissivity

September 16, 2016By Bob BerryGeneral, Training

The materials below are some that I would normally recommend for increasing the emissivity of materials. Scotch 33 Tape Consistent emissivity of 0.95 Glyptal Enamel Paint Electrically insulating paint Dye Penetrant Developer  This is easily applied and removed. It has a very high emissivity Paints, various paints can be used Some deodorants can be used, usually ones with alumina … Read More