T-type thermocouple wires are mainly used to measure the surface temperature of various objects, using the thermoelectric effect to convert temperature changes into electrical signals for detection.
By using the thermoelectric potential difference generated by thermocouple wires during temperature changes, real-time monitoring of surface temperature changes of objects can be achieved and converted into measurable electrical signals, which are suitable for industrial production, scientific research experiments, and other fields.
The T-shaped thermocouple wire adopts a combination of copper (positive electrode) and constantan (copper nickel alloy, negative electrode), with good linearity in the range of -200 ℃ to 350 ℃. However, the oxidation rate of copper accelerates at high temperatures, and long-term use should avoid exceeding 300 ℃. Mainly used for low-temperature measurement, such as food processing, low-temperature physics experiments, and other fields. Suitable for low-temperature measurement, with a measurement range of -200 ℃ to 350 ℃, and generally not exceeding 300 ℃ when used in an oxidizing atmosphere. The thermoelectric electrode has good uniformity, with an annual stability of less than ± 3 μ V in the temperature range of -200 ℃ to 0 ℃, and can be used as a second-class standard for low-temperature value transfer. However, the oxidation resistance of positive copper is poor at high temperatures, which limits the upper limit of its usage temperature. The thermoelectric potential is approximately linearly related to temperature, simplifying the calibration process and reducing measurement errors. Quick response to small temperature changes, suitable for high-precision demand scenarios.
Strong anti-interference ability
High impedance characteristic: effectively suppresses external electromagnetic interference and ensures signal transmission stability.
Flexibility and bendability: The wire diameter is thin and flexible, making it easy to install in narrow spaces or complex structures.
Selection and usage precautions
Temperature upper limit limit
The antioxidant performance of pure copper positive electrode limits the operating temperature, and it is recommended not to exceed 300 ℃ for long-term use and 350 ℃ for short-term use.
The relationship between wire diameter and temperature: The thinner the wire diameter, the lower the temperature resistance (such as 0.2-0.3mm wire diameter, long-term use temperature ≤ 150 ℃).
Installation and Protection
Avoid using in corrosive environments such as sulfur and chlorine, or choose nickel plating treatment to enhance corrosion resistance.
Armor structure can enhance mechanical strength and is suitable for vibration or impact scenarios.