Engineering - Process Instrumentation and Control - Discussion

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Q.

Pick up false statement:                         
A. copper-constantan thermocouple is a stable couple resistant to both oxidis¬ing and reducing atmosphere, but needs protection from acidic vapours B. Iron-constantan thermocouple suffers from oxidation attack on iron wire, if exposed
C. iron-constantant couple can be made stable by using enamelled iron D. Both wires of chromel-alumel ther-mocouples are prone to damage by sulphurous gases

Answer: Option E
Explaination:

 


No Explanation




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