Thermocouple Division
Thermocouple Division
A Thermocouple is a sensor used to measure temperature. Thermocouples consist of two wire legs made from different metals. These wire legs are welded together at one end, creating a junction. This junction is where the temperature is measured.
Types of Thermocouple:
Certain combinations of alloys have become popular as industry standards. Selection of the combination is driven by cost, availability, convenience, melting point, chemical properties, stability, and output. Different types are best suited for different applications. They are usually selected on the basis of the temperature range and sensitivity needed. Thermocouples with low sensitivities (B, R, and S types) have correspondingly lower resolutions. Other selection criteria include the chemical inertness of the thermocouple material and whether it is magnetic or not.
TEMPERATURE RANGES FOR THERMOCOUPLES
1 R type0 to 1600°C
2 S type0 to 1600°C
3 K type0 to 1100°C
4 RTD Sensor/ PT 100 = - 200 to 400°C
