Difference between assembled thermocouples and armored thermocouples

Armored thermocouples have the advantages of bending, high voltage resistance, fast thermal response time, and durability. Like prefabricated thermocouples, armored thermocouples are commonly used as temperature sensors in conjunction with display instruments, recorders, and electronic regulators. Additionally, armored thermocouples can also serve as temperature sensing elements for prefabricated thermocouples. Armored thermocouples can directly measure the temperature of liquid, vapor, gas media, and solid surfaces within the range of 0 ℃ to 1100 ℃ in various production processes.

Armored thermocouples have many advantages such as bending, high voltage resistance, fast thermal response time, and durability. Like industrial assembled thermocouples, they are commonly used as transmitters for measuring temperature and are often paired with display instruments, recording instruments, and electronic regulators. They can also be used as temperature sensing elements for assembled thermocouples It can directly measure the temperature of liquid, vapor, gas media, and solid surfaces in the range of 0-800 ℃ during the production process of various species.

The working principle of armored thermocouple is that two conductors with different compositions are welded at both ends to form a circuit. The temperature measuring end is called the working end, and the wiring terminal end is called the cold end, also known as the reference end. When there is a temperature difference between the working end and the reference end, a thermal current will be generated in the circuit. When connected to a display instrument, the instrument will indicate the corresponding temperature value of the thermoelectric potential generated by the thermocouple. The thermoelectric potential of armored thermocouples will increase as the temperature at the measuring end rises. The magnitude of the thermoelectric potential is only related to the material of the thermocouple conductor and the temperature difference at both ends, and is independent of the length and diameter of the thermoelectric electrode.

The structural principle of armored thermocouples is that they are made of a conductor, high insulation magnesium oxide, and a protective tube made of 1Cr18Ni9Ti stainless steel, which is pulled together multiple times. Armored thermocouple products are mainly composed of junction boxes, terminal blocks, and armored thermocouples, and are equipped with various installation and fixing devices. Armored thermocouples are divided into two types: insulated and shell connected.