Specifying Thermocouple Wire, Extensions, and Thermocouples
Quality and efficiency in heat-treatment operations requires accurate temperature measurement. Specifying thermocouple wire and thermocouples carefully will lead to greater temperature measurement accuracy and less scrap or re-work.
First, consider whether the need is for thermocouple cable or for thermocouple extension cable. Thermocouple cable is made to survive inside the furnace and may be used to form the measuring junction or “hot junction.” It requires insulation and jacketing material that can withstand the process temperatures. It must be used where the temperatures are extreme.