The correct method of connecting thermocouples with extension wires

Thermocouples are sensors that measure temperature, while extension wires are signal wires that connect sensors to devices such as temperature displays. It is very important to correctly connect the thermocouple to the extension wire, otherwise it will affect the accuracy of temperature measurement. Next, let's introduce the correct method of connecting thermocouples with extension wires.
1. Understand thermocouples and extension cords
It is very important to first understand the basic knowledge of thermocouples and extension wires before wiring. Thermocouples are composed of two different metal materials, and when there is a temperature difference at both ends, a certain potential difference will be generated. And an extension wire is a type of wire that connects a thermocouple to a temperature display device. Understanding their properties and characteristics can help us connect them correctly.
2. Choose the appropriate extension cable
Choosing the appropriate extension cable is also a very important step. According to different working environments and requirements, we need to choose extension cables of different materials and specifications. Common extension wires include copper wires, iron nickel alloy wires, etc., which can be selected according to actual needs.
3. Prepare the correct tools
Before wiring, we need to prepare some tools such as wire stripping pliers, crimping pliers, etc. These tools can help us remove the insulation layer of thermocouples and extension wires, exposing the wires for easy connection.
4. Wiring steps
When wiring, the wires of the thermocouple and extension wire need to be exposed first. Then, use crimping pliers to connect the wires of the thermocouple and extension wire to ensure a secure connection. Next, wrap the wiring with insulating tape to prevent the wire from coming into contact with other objects and to avoid safety issues such as short circuits.
5. Check if the wiring is correct
After the wiring is completed, a wiring check is required to ensure that the wiring is correct. You can use tools such as a multimeter to measure the resistance value of a thermocouple and compare it with the standard value. If the wiring is correct, the resistance value should be within a reasonable range.
6. Protective wiring points
After the wiring is completed, we need to protect the wiring points to avoid the influence of external environment on thermocouples and extension wires. Waterproof tape or outer sleeves can be used to tightly wrap the wiring to prevent moisture, corrosion, and other conditions from occurring.
Through the above steps, we can correctly connect the wires, ensure the connection between the thermocouple and extension wire is firm and accurate, and improve the reliability of temperature measurement.