optical pyrometer
- noun
- /ˈɑptɪkəl paɪˈrɑːmɪtər/
- Specialized
- Because of steelmaking's high temperatures, fabricators often use non-contact optical pyrometers to measure temperature.
Examples
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To ensure safety, the engineers utilized an optical pyrometer to measure the temperature of the molten metal.
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The scientist relied on an optical pyrometer to accurately gauge the heat of the burning sample during the experiment.
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During the manufacturing process, technicians checked the temperature with an optical pyrometer to maintain quality control.
Synonyms
A device that measures very high temperatures by looking at the color of light from hot objects
An instrument that measures very high temperatures in furnaces and kilns
Surface Forms
Morphology
The meaning is directly compositional: 'pyrometer' denotes an instrument for measuring high temperatures and 'optical' specifies that it uses light/optical principles, so together they denote a temperature-measuring device that works by optical means. This adjective+noun compound follows regular English formation and is cross-linguistically transparent, so a learner who knows both constituents would readily infer the meaning.
Etymology
Optical pyrometer comes from a simple image: optical means 'using light' and pyrometer means 'a tool for measuring very hot things'. The device looks at the glowing color of a hot object and compares it to a known standard, so it can tell the temperature without touching the metal.