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The commonly used material for thermocouple is
- a)Chromel-copel
- b)Chromel-alumel
- c)Platinum-rhodium
- d)any of the above
Correct answer is option 'D'. Can you explain this answer?
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The commonly used material for thermocouple isa)Chromel-copelb)Chromel...
Material for Thermocouple
Thermocouples are temperature sensors that are commonly used in various industries due to their simplicity, durability, and cost-effectiveness. The commonly used materials for thermocouples are Chromel-copel, Chromel-alumel, and Platinum-rhodium.
Chromel-Copel
- Chromel-copel is a type of thermocouple that consists of an alloy of 90% nickel and 10% chromium (Chromel) for one wire and an alloy of 95% nickel, 2% aluminum, and 2% manganese (Copel) for the other wire.
- This type of thermocouple is commonly used in the temperature range of -200°C to 1200°C.
Chromel-Alumel
- Chromel-alumel is another type of thermocouple that consists of an alloy of 90% nickel and 10% chromium (Chromel) for one wire and an alloy of 95% nickel and 2% aluminum (Alumel) for the other wire.
- This type of thermocouple is commonly used in the temperature range of -200°C to 1260°C.
Platinum-Rhodium
- Platinum-rhodium thermocouples are more expensive compared to Chromel-copel and Chromel-alumel thermocouples but offer greater accuracy and stability.
- This type of thermocouple is commonly used in the temperature range of -200°C to 1768°C.
Conclusion
- In conclusion, the commonly used material for thermocouples is Chromel-copel, Chromel-alumel, and Platinum-rhodium, with each type of thermocouple suitable for different temperature ranges and applications.
Thermocouples are temperature sensors that are commonly used in various industries due to their simplicity, durability, and cost-effectiveness. The commonly used materials for thermocouples are Chromel-copel, Chromel-alumel, and Platinum-rhodium.
Chromel-Copel
- Chromel-copel is a type of thermocouple that consists of an alloy of 90% nickel and 10% chromium (Chromel) for one wire and an alloy of 95% nickel, 2% aluminum, and 2% manganese (Copel) for the other wire.
- This type of thermocouple is commonly used in the temperature range of -200°C to 1200°C.
Chromel-Alumel
- Chromel-alumel is another type of thermocouple that consists of an alloy of 90% nickel and 10% chromium (Chromel) for one wire and an alloy of 95% nickel and 2% aluminum (Alumel) for the other wire.
- This type of thermocouple is commonly used in the temperature range of -200°C to 1260°C.
Platinum-Rhodium
- Platinum-rhodium thermocouples are more expensive compared to Chromel-copel and Chromel-alumel thermocouples but offer greater accuracy and stability.
- This type of thermocouple is commonly used in the temperature range of -200°C to 1768°C.
Conclusion
- In conclusion, the commonly used material for thermocouples is Chromel-copel, Chromel-alumel, and Platinum-rhodium, with each type of thermocouple suitable for different temperature ranges and applications.
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The commonly used material for thermocouple isa)Chromel-copelb)Chromel-alumelc)Platinum-rhodiumd)any of the aboveCorrect answer is option 'D'. Can you explain this answer?
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