engineering recuitment GATE IN Test Series 2023-24 Mock Test Sensors and Industrial Instrumentation Measurement of Temperature Thermocouple
An iron-constantan thermocouple is to be used to measure temperature between 0 and 300° C. With reference junction at 0° C, the emf induced at 100° C and 300° C are E100 = 5268 μV, E300 = 16325 μV. Then the non-linearity at 100 ° C as a percentage of full scale is
1
-3.23%
2
-1.06%
3
-0.46%
4
+3.23%