Reg: Standerd maximum Distance between Thermocouple and heat generate material

A good 'rule of thumb' in locating thermocouples is to place them between the workload and heat source. The thermocouple should be located 1/3 the distance from the heat source and 2/3 the distance to the workload.

If a thermocouple is located too close to the heaters, a long warm-up time will result. The thermocouple will sense the heat before it reaches the workload, and this means rapid on/off action of the controller. In effect, the controller is controlling the heater and not the workload. In rare cases, voltage will be induced into the thermocouple circuit at high temperatures when located too near the heaters.