A thermocouple instrument has an input resistance of 50,000 ohms and is used with an IC Type J couple. The lead wire is #18 gauge, 120 feet long. What is the approximate error contributed by the lead wire?
A. ± 5.0 percent
B. ± 0.5 percent
C. ± 0.05 percent
D. ± 0.1 percent
Answer:C
A thermocouple instrument has an input resistance of 50,000 ohms and is used with an IC Type J couple. The lead wire is #18 gauge, 120 feet long. What is the approximate error contributed by the lead wire?
A. ± 5.0 percent B. ± 0.5 percent C. ± 0.05 percent D. ± 0.1 percent