Discussion
Arrange these steps by which a thermocouple indication reaches the display:
1. The hot junction sits in the gas path and generates a small voltage
2. Several junctions in parallel average around the annulus
3. The voltage is carried forward on compensated leads
4. Cold junction compensation is applied in the indicator
5. The display shows an absolute temperature
Select the correct sequence.
Answer: D
The compensated leads matter because any dissimilar metal junction in the circuit would add its own voltage. Compensation then converts the difference the thermocouple actually measures into the absolute value the crew reads.
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