Factory introduction high temperature platinum rhodium thermocouple principle for homework Shanghai dragon instrument electric appliance co. , LTD

Resistance to high temperature platinum rhodium thermocouple operation principle: two different components of conductor ( Called the thermocouple wire or hot electrode) At both ends of loop, as the temperature of the junction is not together, will occur in the circuit electromotive force, this kind of phenomenon called the thermoelectric effect, and the electromotive force called thermoelectric potential. Thermocouple is using the principle of temperature measurement, meanwhile, directly used as a measurement of the medium temperature is called the homework at the end of the end ( Also known as the measurement end) , on the other side called cold end ( Also known as compensation) ； The cold end and appearance looks or supporting they cohesion, show appearance will point out the thermocouple thermoelectric potential of what had happened. Thermocouple is actually a kind of energy converter, it converts heat energy to electricity, with the thermoelectric potential measurement of temperature, on the thermocouple thermoelectric power, the thermocouple thermoelectric potential is the difference in thermocouple temperature function of both ends, rather than a function of temperature difference, the thermocouple at both ends of thermocouple thermoelectric potential of intrusive, when thermocouple information is uniform, has nothing to do with the length and diameter of thermocouple, only ingredients with thermocouple data related to the temperature difference between the two. When the two thermocouple wire thermocouple data components confirmed, thermocouple thermoelectric potential of intrusive, only related with the thermocouple temperature difference; If the thermocouple cold end temperature must, this into the thermocouple thermoelectric potential is only part of the job end temperature of single value function. The two different information conductor or semiconductor welding, A and B constitute A closed loop.