K type thermcouples are by far the most common thermocouple type in use. It is quite an inexpensive sensor and we can manufacture many different designs of this thermocouple type. Its range is common for many industrial processes and is the main base metal thermocouple before switching to a rare metal thermocouple. The high nickel content of Type K means it is a very stable sensor. Type K is unsuitable for reducing atmospheres unless it is protected by a sheath. It’s sensitivity is around 41 µV/°C.