1. Ratio pyrometers are essentially two brightness pyrometers in a single instrument. 2. Ratio pyrometers are essentially two brightness pyrometers in a single instrument. 3. Reflected light was measured using a pyrometer lamp as a photometer. 4. The technician is measuring the temperature with an optical pyrometer . 5. This establishes a second calibration point for the pyrometer . 6. Handheld pyrometer devices are often marketed as infrared thermometers. 7. Many disappearing-filament pyrometers use a red filter. 8. Pyrometers were installed in December 1917 to accurately measure temperatures during the forging process.9. The glass will remain in the closed kiln until the pyrometer reads room temperature. 10. The pyrometer , invented by Pieter van Musschenbroek, is a temperature measuring device.
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