1.K-type thermocouples are used as a temperature sensor, and K-type thermocouples are usually used in conjunction with display instruments, recording instruments and electronic regulators. K-type thermocouples can directly measure liquid vapor and gaseous media and solid surface temperatures from 0 ° C to 1300 ° C in various productions. K-type thermocouples usually consist of main components such as temperature sensing components, mounting fixtures and junction boxes.
2.K-type thermocouples are currently the largest amount of inexpensive metal thermocouples, the amount of which is the sum of other thermocouples. The K-type thermocouple wire is generally 1.2 to 4.0 mm in diameter. The nominal chemical composition of the positive electrode (KP) is: Ni:Cr=90:10, and the nominal chemical composition of the negative electrode (KN) is: Ni:Si=97:3, and its use temperature is -200 to 1300 °C.
3.K-type thermocouples have the advantages of good linearity, large thermoelectromotive force, high sensitivity, good stability and uniformity, strong anti-oxidation performance and low price. They can be widely used in oxidative inert atmospheres. K-type thermocouples cannot be used directly in high temperature for sulfur, reducing or reducing, oxidizing in alternating atmospheres and in vacuum, and are not recommended for weak oxidizing atmospheres.