pyrometer - Definition. Was ist pyrometer
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Was (wer) ist pyrometer - definition

REMOTE-SENSING THERMOMETER USED TO MEASURE HIGH TEMPERATURES
Pyrometers; Pyrometery; Pyrometry; Radiation pyrometer; Optical pyrometer
  • A pyrometer from 1852. Heating the metal bar (a) presses against a lever (b), which  moves a pointer (c) along a scale that serves as a measuring index. (e) is an immovable prop which holds the bar in place. A spring on (c) pushes against (b), causing the index to fall back once the bar cools.
  • Czochralski]] crystal growing equipment at Raytheon transistor plant in 1956.
  • Measuring the combustion temperature of coke in the blast furnace using an optical pyrometer, Fixed Nitrogen Research Laboratory, 1930.

pyrometer         
[p??'r?m?t?]
¦ noun an instrument for measuring high temperatures, especially in furnaces and kilns.
Derivatives
pyrometric adjective
pyrometrically adverb
pyrometry noun
Pyrometer         
·noun An instrument used for measuring the expansion of solid bodies by heat.
II. Pyrometer ·noun An instrument for measuring degrees of heat above those indicated by the mercurial thermometer.
Pyrometry         
·noun The art of measuring degrees of heat, or the expansion of bodies by heat.

Wikipedia

Pyrometer

A pyrometer is a type of remote-sensing thermometer used to measure the temperature of distant objects. Various forms of pyrometers have historically existed. In the modern usage, it is a device that from a distance determines the temperature of a surface from the amount of the thermal radiation it emits, a process known as pyrometry and sometimes radiometry.

The word pyrometer comes from the Greek word for fire, "πῦρ" (pyr), and meter, meaning to measure. The word pyrometer was originally coined to denote a device capable of measuring the temperature of an object by its incandescence, visible light emitted by a body which is at least red-hot. Modern pyrometers or infrared thermometers also measure the temperature of cooler objects, down to room temperature, by detecting their infrared radiation flux.