Question from a customer: “Scanning through the steel grating I read a temperature 5 to 15 degrees Celsius lower than scanning without the grating. I know it is to do with the steel grating but I was wondering why.”Great question. Let’s take a look at a typical situation with and without a grating, and then placing the grating at different distances to the camera.
The distance between the fuse and the camera remains constant, and the camera is always focused on the fuse. The only changes are the insertion of the grating, and the distance of the grating from the infrared camera.
Figure 1. Looking at a fuse directly with no grating. Max temperature is 51.4 C.
Figure 2. We have inserted the grating close to the fuse.
Max temperature dropped to 51 C, a small error.
