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 http://www.hsa.ie/eng/Safety_Alerts/2008/Generators_Alert/
A short video showing how to use Flir tools on an iPhone.
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
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
How wrong can my temperatures be? I have often been asked this question by students, and it does surprise them when they find out. The accuracy of high quality cameras is +or- 1 degrees or 1%, whichever is the greatest (low quality cameras it can be +or- 5 degrees). This means then under … Read More
Why is emissivity different with different cameras? This is difficult for people to fully understand. To be honest, emissivity in general takes some time to begin to get a good grasp of, for me the process of getting a strong understanding took a few years, a lot of reading and some experimentation. Emissivity changes with temperature, … Read More