27 Jan 2024 Thermocouple (TC)
Posted at 11:16h
in
A thermocouple is a temperature sensor consisting of two wires made of different metals. The two metals are welded together at the tip of the thermocouple. Due to the Seebeck effect, an electrical voltage is created between the two wires, which is temperature-dependent. The voltage can be recorded and converted into a temperature using an appropriate voltmeter. Depending on the alloy, thermocouples are divided into different types or standardized according to the IEC or ANSI standard.
Type K thermocouples are often used for measuring soldering or sintering processes. These are made of NiCr-Ni, are easy to weld and resistant to flux.
An overview is shown in the following table.
| Type | Material 1-2 | Temperature range in °C | Limit deviation class 1 in °C |
| K | NiCr-Ni | -270…1300 | 1,5 oder 0,004*t |
| J | Fe-CuNi | -210…1200 | 1,5 oder 0,004*t |
| N | NiCrSi-NiSi | -270…1300 | 1,5 oder 0,004*t |
| E | NiCr-CuNi | -270…1000 | 1,5 oder 0,004*t |
| T | Cu-CuNi | -270…400 | 0,5 oder 0,004*t |
Synonyms:
Thermal element