Product Details

Thermocouple Sensor

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A thermocouple is a temperature sensing element and an instrument. It directly measures temperature and converts the temperature signal into a thermoelectromotive force signal, which is then converted into the temperature of the measured medium through an electrical instrument (secondary instrument). The basic principle of thermocouple temperature measurement is that two conductors of different materials form a closed loop. When there is a temperature gradient between the two ends, a current will flow through the loop, and an electromotive force will exist between the two ends—thermoelectromotive

force, which is the so-called Seebeck effect. Two homogeneous conductors of different materials serve as thermoelectrodes. The end with higher temperature is the working end, and the end with lower temperature is the free end, which is usually at a constant temperature. According to the functional relationship between thermoelectromotive force and temperature, a thermocouple graduation table is made; the graduation table is obtained when the free end temperature is at 0℃, and different thermocouples have different graduation tables. ^[2

When a third metal material is inserted into the thermocouple circuit, as long as the temperatures at the two junctions of this material are the same, the thermoelectromotive force generated by the thermocouple will remain unchanged, i.e., it is not affected by the insertion of the third metal into the circuit. Therefore, in the thermocouple

Thermocouple Sensor

When measuring temperature, a measuring instrument can be connected. After measuring the thermoelectromotive force, the temperature of the measured medium can be known.







Note: The above information and technical parameters are compiled and released by Yangzhou Daru Electric Co., Ltd.