Dome temperature of blast furnace stove is most accurately measured by a____________________?
Correct answer: B. platinum-platinum/rhodium thermocouple
- A. Radiation pyrometer
- B. platinum-platinum/rhodium thermocouple
- C. Iron-constantan thermocouple
- D. Platinum resistance thermometer
Explanation
The dome of a blast-furnace stove reaches very high temperatures, for which a platinum-platinum/rhodium thermocouple is suitable and accurate. Iron-constantan thermocouples are limited to much lower temperatures.
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