Everything about Pyrometry totally explained
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.
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 doesn't 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.
Pyrometry of gases presents difficulties. These are most commonly overcome by using
thin filament pyrometry or
soot pyrometry. Both techniques involve small solids in contact with hot gases.
Further Information
Get more info on 'Pyrometry'.
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