Chemical Engineering - Process Control and Instrumentation - Discussion

Discussion Forum : Process Control and Instrumentation - Section 1 (Q.No. 47)
47.
Emf developed by a thermocouple, while measuring a temperature of 600°C is about 5.5 mV. The type of thermocouple used is
chromel-alumel
iron-constantan
platinum-platinum+rhodium
either (a), (b) or (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.

Funsuk wangadu said:   2 years ago
But by iron-constantan, we can temperature -40 to 750 ° C.

So, why not answer is B?

Anonmus said:   8 years ago
The platinum-platinum+rhodium (pt-pt-rh) measures at range 600-1600c so at 600 c it will give the least millivolts.
(2)

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