Thermocouples generate a voltage directly dependent on temperature. They are particularly suited for high temperatures up to 1,700 °C. Instrument designs from mineral-insulated sheathed cable are very resistant against extremely high vibration loads (depending on instrument model, sensor element and wetted materials). The accuracy classes 1 and 2 apply for thermocouples in accordance with IEC 60584 as well as the standard and special classes in accordance with ASTM E230.
Tempsens is one of the largest manufacturers of Thermocouples in the world. Short lead times are available for most of the standard offering of K,S,R type sensors.
More information for thermocouples is available here :