Pyrometer

A pyrometer is non-contact temperature measuring device, generally the term is applied to instruments measuring temperatures above 600 degrees Celsius. It is typically used to measure temperatures of glowing hot metals in a steel mill or foundry. It is also known as an optical pyrometer.

Related Topics:
Temperature - Celsius - Metal - Steel mill - Foundry

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One of the most common pyrometers is the absorption-emission pyrometer which is a thermometer for determining gas temperature from measurement of the radiation emitted by a calibrated reference source before and after this radiation has passed through and been partially absorbed by the gas. Both measurements are made over the same wavelength interval.

Related Topics:
Thermometer - Radiation - Wavelength

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To measure the temperature of incandescent metals, you look through the pyrometer at the glowing metal, and turn a knob or ring which adjusts the temperature of a glowing filament projected into your field of view. When the color of the filament matches the color of the metal, you can read the temperature from a scale on the filament color adjusting knob/ring.

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