A temperature transmitter using a thermocouple has an output voltage of 5 mV. If the reference junction is at 20°C and the hot junction is at an unknown temperature, what is the temperature of the hot junction if the type of thermocouple being used is a J-type?
A. 147°C
B. 210°C
C. 240°C
D. 310°C
Answer:B
A temperature transmitter using a thermocouple has an output voltage of 5 mV. If the reference junction is at 20°C and the hot junction is at an unknown temperature, what is the temperature of the hot junction if the type of thermocouple being used is a J-type?
A. 147°C B. 210°C C. 240°C D. 310°C
Explanation: Using the standard thermocouple reference tables for a J-type thermocouple, we can determine the temperature of the hot junction based on the output voltage and the temperature difference between the hot and reference junctions.