The correct connection method for dual wires of thermocouple compensation wires

What is the function of thermocouple compensation wire?
Thermocouple compensation wire is a wire used to connect thermocouple electrodes and measuring instruments, and its main function is to perform temperature compensation.

Why is temperature compensation necessary?
The measurement of temperature by thermocouple electrodes is based on the principle of thermoelectric effect, which is greatly affected by the temperature changes of wire materials. In order to reduce measurement errors caused by changes in wire temperature, temperature compensation is required.

What is the difference between a dual wire compensation wire and a regular wire?
The main difference between dual wire compensation wires and ordinary wires lies in their structure and materials. The dual wire compensation wire adopts a dual core structure, with one core being a thermocouple wire and the other core being a compensation wire. And ordinary wires only have one core, without temperature compensation.

What are the connection methods for dual wire compensation wires?
There are two main connection methods for dual wire compensation wires: parallel connection and series connection. Parallel connection method is to connect thermocouple wires and compensation wires in parallel, with both wires connected to the measuring instrument simultaneously. The series connection method is to connect thermocouple wires and compensation wires in series, with only one wire connected to the measuring instrument.

What is the difference between parallel connection and series connection?
The parallel connection method can reduce measurement errors caused by changes in wire temperature and improve measurement. The series connection method can detect the overall temperature changes of thermocouple wires and compensation wires, and can be used to measure environmental temperature changes.

6. What issues should be noted in the connection method of dual wire compensation wires?
During the wiring process, it is necessary to ensure that the connection between the thermocouple wire and the compensation wire is firm and reliable to prevent poor contact or detachment. Additionally, it is important to ensure that the length and material of the wires match the actual working environment to ensure the accuracy of temperature compensation.