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Pyrometry is the non-contact measurement of the temperature of an object, by measuring its self-emission and emissivity. An apparatus that measures the temperature by means of pyrometry is called a pyrometer or optical pyrometer.
Additional recommended knowledge
Emissivity is a measure of the object's capability to emit electromagnetic radiation. The value of emissivity ranges from 0 to 1, where the emissivity of a perfect emitter also known as a black body is 1, and a theoretical object that does not emit radiation at all has an emissivity of 0.
The most advanced pyrometers measure both the emission of the object and its emissivity, while other pyrometers require the user to enter the emissivity value via the pyrometer's inputs (dials or digital communication).
Pyrometers are used in a variety of applications, from human body temperature monitoring (ear pyrometers) to industrial applications like metals manufacturing and semiconductor manufacturing.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Pyrometry". A list of authors is available in Wikipedia.|