An instrument designed for an operating span of 800 to 1600°C is likely what type of pyrometer _____________ pyrometer?
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Answer: C. Photoelectric
Explanation
Photoelectric pyrometers are typically deployed for high-temperature ranges such as 800 to 1600 degrees Celsius. They measure thermal radiation intensity electronically using photoelectric cells rather than human visual matching. This photoelectric conversion provides repeatable, automated temperature readings across harsh industrial spans. Photoelectric sensors convert incident light photons into measurable electrical currents or voltages. High-temperature industrial processes emit intense visible and infrared radiation detectable by photocells. Electronic signal processing eliminates human operator subjectivity inherent in manual optical pyrometer matching.
Metal hardening furnaces, ceramic kilns, and glass annealing arches require precise high-temperature control. Automated photoelectric pyrometers integrate directly into distributed control systems for continuous logging. Accurate pyrometry prevents overheating and material degradation in high-temperature metallurgical operations. Radiation pyrometers cover broad thermal bands, but photoelectric units specifically use electronic light sensors. Optical pyrometers rely on human visual brightness matching rather than automated photoelectric cell detection. Selecting none of these is incorrect because photoelectric pyrometers accurately describe the specified application.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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