An experiment is conducted to calibrate a copper constantan thermocouple. With cold junction at 0C, emf...

 

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An experiment is conducted to calibrate a copper constantan thermocouple. With cold junction at 0°C, emf obtained at the boiling point of water (100°C) and boiling point of sulphur (445°C) are 5mV and 25mV, respectively. If the relation is assumed to be: et₁-t₂ = a(t₁- t₂) + b(t? – t²) i. ii. iii. Determine the constants a and b. The above thermocouple indicates 2mV with a cold junction at 40°C. Determine the unknown hot junction temperature. If the cold junction is maintained at 40°C, what would be the emf when the hot junction temperature is at 500°C? An experiment is conducted to calibrate a copper constantan thermocouple. With cold junction at 0°C, emf obtained at the boiling point of water (100°C) and boiling point of sulphur (445°C) are 5mV and 25mV, respectively. If the relation is assumed to be: et₁-t₂ = a(t₁- t₂) + b(t? – t²) i. ii. iii. Determine the constants a and b. The above thermocouple indicates 2mV with a cold junction at 40°C. Determine the unknown hot junction temperature. If the cold junction is maintained at 40°C, what would be the emf when the hot junction temperature is at 500°C?

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Determining the constants a and b 1 Plug the known values into the equation 5mV a1000 b100202 25mV a... View the full answer