Chemical Engineering - Process Control and Instrumentation - Discussion
Discussion Forum : Process Control and Instrumentation - Section 1 (Q.No. 18)
18.
The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple.
Discussion:
1 comments Page 1 of 1.
Minitkumar said:
1 decade ago
Iron constantan because of its temperature range is -196 to 760. And scale linearity is good and it is nearly linear between 149-438 degree centigrade. And most economical of rest. Platinum rhodium platinum is poor scale below 538 centigrade and expensive also. Pt-PtRh and chromel alumel are oxidizing.
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