Series Fluke - ACC

An infrared thermometer used in industry (also known as a pyrometer) works on a similar principle to the one that many people currently have in their home medicine cabinets. It is used for quick and non-contact measurement of the temperature of the measuring object, which - in the case of an industrial device - is usually not a person, but e.g. an installation. What is an infrared thermometer for and what exactly is it used in industry?