Thermoelectric potential in the main role of thermocouple

Thermocouple is actually energy converter, the main is the thermal energy directly into electricity, then the temperature is measured using the thermoelectric potential, so the thermocouple thermoelectric potential in use, what need to pay special attention to? One, first of all, the thermocouple thermoelectric potential is actually refers to the function on the temperature difference on both ends of the thermocouple, not the thermocouple temperature difference on both ends of the function value, so that everyone must know; Second, the second in the thermocouple thermoelectric potential to produce what is the size? If material belongs to the uniform of thermocouple, the thermocouple basic on the length and diameter, there is no relationship between will only and thermocouple on the material composition, and ends with temperature difference correlation; Three, we accidentally in the identified the thermocouple wire main ingredients, so the thermocouple thermoelectric potential on the size, the actual will only existing relationships and thermocouple temperature difference; If the thermocouple cold end temperature on consistent, it is on behalf of the thermocouple thermoelectric potential and work only in the temperature and the unit of function.