Thermocouples are one of the most common types of temperature sensors used widely in industries. There are various types of thermocouples available with different types of assemblies. The most common type of thermocouple is K And J Type. It is commonly used for temperature measuring applications J Type works between 0°C – 750°C and K type works between -200°C – 1200°C. Other than this there are some other types of thermocouples rarely used as per applications is N Type, B Type, E Type, T Type, And S Type.