Method for distinguishing the positive and negative poles of dual wire thermocouples

What is the function of dual thermocouple wires?
Thermocouple dual wire is a commonly used temperature measuring element that can measure the temperature of various objects.
Why do we need to distinguish between the positive and negative poles of thermocouple wires?
The connection method of the positive and negative poles can affect the measurement results, so it is very important to distinguish the positive and negative poles of the thermocouple's dual wires.
3. How to distinguish the positive and negative poles of thermocouple dual wires?
A common method is to distinguish based on the color of the thermocouple wires. Usually, the red wire is the positive pole, and the blue or white wire is the negative pole.
Is there any other way to distinguish positive and negative poles besides color?
Yes, in addition to color, you can also use various methods to distinguish the positive and negative poles of thermocouple wires. For example, it can be distinguished by identification or other means.
Why are the colors of the thermocouple dual wires red, blue, or white?
The color selection of thermocouple dual wires is determined according to international standards, with red representing the positive electrode and blue or white representing the negative electrode.
What if it is impossible to distinguish the positive and negative poles of the thermocouple's dual wires?
If it is not possible to distinguish the positive and negative poles of the thermocouple's dual wires, you can try reversing the thermocouple's wiring and then conducting temperature measurements. If there is a significant change in the measurement results, it is judged that the flipped wiring is correct.
By using the above method, we can accurately distinguish the positive and negative poles of the thermocouple dual wires, ensuring the accuracy of temperature measurement.