Which of the following thermocouples has the widest temperature measurement range ?
Correct answer: D. Platinum-platinum/rhodium
- A. Iron-constantan
- B. Chromel-alumel
- C. Copper-constantan
- D. Platinum-platinum/rhodium
Explanation
The platinum-platinum/rhodium thermocouple withstands the highest temperatures among these choices, making it suitable for high-temperature measurement. Iron-constantan, chromel-alumel, and copper-constantan have lower upper temperature limits.
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