I need an expert opinion! Is it possible to get a thermal image from an aerial viewpoint of a building located 3mtr from a pylon and directly under high tension wires? I was of the opinion that the pylon and lines disperse so much energy that an accurate reading is impossible?
It is true that there can be high levels of energy given off by HV lines, but very little of this will be in the same region that the camera works in. Thermal imaging cameras normally operate in the 2-5 micron or 8-14 micron regions. This is in the infrared part of the spectrum and in the area most associated with heat energy. The power lines would have to be very hot to create a problem, and they very seldom are. With thermography in buildings this is a very insignificant issue compared to other problems, and unlikely to affect the accuracy under normal conditions. Assuming everything else is done correctly with the building thermography, I can’t really see this being a problem.
Effect of overhead lines
0I need an expert opinion! Is it possible to get a thermal image from an aerial viewpoint of a building located 3mtr from a pylon and directly under high tension wires? I was of the opinion that the pylon and lines disperse so much energy that an accurate reading is impossible?
It is true that there can be high levels of energy given off by HV lines, but very little of this will be in the same region that the camera works in. Thermal imaging cameras normally operate in the 2-5 micron or 8-14 micron regions. This is in the infrared part of the spectrum and in the area most associated with heat energy. The power lines would have to be very hot to create a problem, and they very seldom are. With thermography in buildings this is a very insignificant issue compared to other problems, and unlikely to affect the accuracy under normal conditions. Assuming everything else is done correctly with the building thermography, I can’t really see this being a problem.