Answer
Jul 28, 2024 - 12:24 PM
Most general-purpose infrared sensors detect infrared energy with a wavelength with an 8–14 micron bandwidth. However, reflective steel emits very little energy in this wavelength range, making it difficult to get an accurate measurement with a general-purpose sensor. Reflective steel emits larger amounts of energy in the 2 micron range which is why we suggest using an infrared sensor with a short wavelength spectral response. These sensors include the PyroMini2.2, PyroUSB(certain models), PyroCube M and the IRt/c.10A(certain models).
Short wavelength sensors are more specialized and more expensive than a general-purpose sensors. They also can’t be used to measure low temperatures. One economical alternative to a short wavelength sensor is to coat the surface with paint or some other non-reflective coating. This would then allow a general-purpose sensor to be used
