Handheld infrared (IR) thermometers are used in many industries and work environments to measure surface temperatures rapidly and at a safe distance. Elevated temperature can be the first sign of trouble for mechanical equipment, electrical circuits and building systems. A quick temperature check of key components can find potential trouble areas and prevent catastrophic failures. This article will discuss the basics of infrared radiation, as well as two important concepts to understand when choosing and using an infrared thermometer: D:S ratio and emissivity. Infrared Radiation and the Electromagnetic Spectrum Infrared radiation is one type of radiation in the electromagnetic spectrum. […]