Classification of thermocouples

Armoured thermocouples have many advantages such as flexibility, high pressure resistance, fast thermal response time and durability. They are the same as industrial assembled thermocouples. They are used as temperature transmitters and are usually used with display instruments, recording instruments and electronic adjustments. It can be used as a temperature-sensing element of assembled thermocouple. It can directly measure the temperature range of 0~800℃ during the production process. The armored thermocouple has the characteristics of bending, high pressure resistance, fast thermal response time and sturdiness. It has many advantages such as durability. It is the same as the industrial assembled thermocouple. As a transmitter for measuring temperature, it is usually used with display instruments, recording instruments and electronic regulators. At the same time, it can also be used as a temperature sensing element for assembled thermocouples. It can directly measure the temperature of liquid, steam and gaseous media and solid surfaces in the range of 0~800℃ during the production process of famous species. The principle of installing thermocouples The working principle of armored thermocouples is that two conductors of different components are welded at both ends to form a loop. The direct temperature measurement terminal is called the working terminal, and the terminal terminal is called the cold terminal, also called the reference terminal. When there is a temperature difference between the working end and the reference end, thermal current will be generated in the loop. Connect the display instrument, and the instrument will indicate the corresponding temperature value of the thermoelectromotive force generated by the thermocouple. The thermoelectromotive force of the sheathed thermocouple will increase as the temperature of the measuring terminal increases. The thermoelectromotive force is only related to the thermocouple conductor material and the temperature difference between the two ends, and has nothing to do with the length and diameter of the thermoelectrode. The structural principle of the armored thermocouple is that it is made of a conductor, a high-insulation magnesium oxide, and a 1Cr18Ni9Ti stainless steel protective tube with a jacket, which is drawn as one piece for many times. Armored thermocouple products are mainly composed of junction box, terminal block and armored thermocouple, and are equipped with various installation fixtures. Armoured thermocouples are divided into two types: insulated type and shell-connected type.