The Black body calibrators are used in most industries for monitoring the calibration of the infrared temperature sensor. The Calibrators consider a heated or cooled target object whose temperature will be accurately known and it will act as the base for providing the accurate infrared pyrometers. A Black body calibrators are excellent radiators that emit thermal energy in a visible or infrared form with intensity at a given wavelength and temperature. The black body calibrator sources can effectively absorb and release extremely non-reflective radiations and it has an emissivity value of 1. When compared to other material that is available in the market, the black body calibration source makes a true perfect blackbody. Few Black body calibrators show an emissivity less than 1 but when they are designed properly, they can be bought closer to 1. The emissivity of the blackbody is matched to the emissivity of the sensor by adjusting it. The black bodies are used...