What's wrong with measuring negative values with thermocouples

Why do thermocouples produce negative measurement results?
Negative values measured by thermocouples are usually caused by electrode reversal or connection errors in the system.
Why does electrode reversal or incorrect connection lead to negative measurement results?
Electrode reversal or incorrect connection can cause a change in the polarity of the potential difference between thermocouple electrodes, resulting in a negative measurement result.
How does thermocouple electrode reversal occur?
Thermocouple electrode reversal is usually caused by incorrect connection during installation or replacement of thermocouples. For example, connecting the red wire to the negative electrode and the blue wire to the positive electrode can cause the thermocouple electrode to reverse.
How to avoid thermocouple connection errors?
To avoid incorrect thermocouple connections, it is necessary to carefully check the wiring when installing or replacing thermocouples. Make sure to connect the red wire to the positive pole and the blue wire to the negative pole.
What is the impact of negative values measured by thermocouples on the measurement results?
Measuring negative values with thermocouples can lead to errors in the measurement results. According to the properties of thermocouples, there is a positive correlation between potential difference and temperature under normal circumstances, while the measurement results of negative values do not match the actual temperature.
6. How to correct negative values measured by thermocouples?
The method to correct negative values in thermocouple measurements is to connect the electrodes correctly. Recheck the connection of the thermocouple to ensure that the red wire is connected to the positive pole and the blue wire is connected to the negative pole.
Negative values measured by thermocouples are usually caused by electrode reversal or connection errors. To avoid measuring negative values with thermocouples, it is necessary to carefully check the connection of the thermocouples, ensuring that the red wire is connected to the positive pole and the blue wire is connected to the negative pole. The method of correcting negative values measured by thermocouples is also to correctly connect the electrodes.