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technical article
Application and characteristics of armored thermocouple
2011-12-22 10:58:50


Galvanic couples are welded together with conductors of two different compositions. When the temperature at both ends is different, thermoelectric potential will be generated in the circuit.

It is a temperature-sensitive element that measures the temperature by measuring the electric potential. It is a converter that can convert the temperature signal into an electric signal and then display it on the display instrument.


的工作原理是由两种不同成分的导体两端经焊接,形成回路,直接测温端叫测量端,接线端叫参比端。 The working principle of the armored thermocouple is that two ends of two different composition conductors are welded to form a loop. The direct temperature measurement terminal is called the measurement terminal, and the terminal is called the reference terminal. When there is a temperature difference between the measuring end and the reference end,

A thermal current will be generated in the circuit. 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 armored thermocouple will increase as the temperature of the measuring end rises. The size of the thermoelectromotive force is only related to the material of the armored thermocouple conductor and the temperature difference between the two ends, and has nothing to do with the length and diameter of the thermal electrode.

The structure of the armored thermocouple is made of conductor, insulated magnesium oxide and stainless steel protective tube. 组成基本结构, Armored thermocouple products are mainly composed of junction boxes, terminals and armored thermocouples .

And equipped with various fixing devices.


特点 Armored Thermocouple Features

1. The length of use can be arbitrarily selected according to needs.

2. Excellent high temperature insulation performance. The compact structure makes the armored thermocouple highly insulating.

3. Wide range of use, can withstand high temperature and pressure, use in the temperature range of -40 ~ + 1100 degrees Celsius.

4, good flexibility and flexibility. It can be applied to simple installation on various measurement positions with complicated structures.

5. High mechanical strength. The thermal electrode is closely combined with the insulator and the high-strength armoring layer. Therefore, the high-strength and pressure-resistant, high-temperature, low-temperature, shock-resistant, and shock-resistant can also be used in high pressure or vacuum environment.

6, long life, because the casing and chemical insulators do airtight protection, so it is not perishable, short lines, etc., can be used for a long time

7, small thermal inertia, fast response speed.