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How to connect red and white thermocouples 4

1. Thermocouples
Thermocouple is a temperature measurement device commonly used in industrial process control and laboratory research. The principle of thermocouples is based on the thermoelectric effect, which describes the potential difference caused by temperature changes in metal conductors. Thermocouples are composed of two different metal conductors welded together, and their measurement range depends on the selected metal type.

2.4 Red and White
"4 red and 2 white" is a common thermocouple wiring method. Among them, "4 red" indicates the use of 4-core red insulated cables, while "2 white" indicates the presence of two white insulated cables.

3. How to connect
Correct thermocouple wiring can ensure the accuracy and stability of temperature measurement. According to the wiring method of "4 red and 2 white", the wiring process is as follows:


Firstly, ensure that the connection between the thermocouple and the measuring instrument is disconnected, and confirm that the wire is compatible with the interface of the measuring instrument.

Peel off the insulation layer of the wire:

Carefully peel off the insulation layer at the end of the red and white insulated cables using wire stripping pliers or blades, exposing the metal part of the wire.


Connect the metal wire of the red insulated cable to the red terminal or clip, and tighten the nut or clamping device to ensure a secure connection. Similarly, connect the metal wires of the white insulated cable to the white terminal or clamp.


Check all wiring points to ensure good contact and no looseness. Maintain distance between wires to avoid contact and cross interference.


As needed, ensure that the metal part of the thermocouple is connected to the ground wire to provide electrical safety and prevent interference.

In short, the key to correctly connecting "thermocouple 4 red and white" lies in carefully peeling off the insulation layer, correctly connecting metal wires, and conducting a comprehensive wiring inspection.

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