Index number of temperature control instrument

Due to the different materials of thermocouples, in order to facilitate memory, people divide thermocouples composed of different materials into thermocouples of several graduation values. Thermocouples of different materials have different temperature measurement ranges and different application places. Of course, the millivolt signal to the transmitter is also different. Therefore, the graduation value of the thermocouple and the transmitter must be the same! Because the thermoelectric potential and temperature of the thermocouple are different due to the different materials of the thermocouple, in order to facilitate memory, people divide the thermocouple made of different materials into several graduations Thermocouples of different materials have different temperature measurement ranges, and their application places are also different. Of course, the millivolt signal to the transmitter is also different. Therefore, the graduation value of the thermocouple and the transmitter must be the same! Because the thermoelectric potential of the thermocouple and the temperature are not linear, but the output of the transmitter is linear, which is due to the linear compensation in the transmitter Circuit, so the graduation value of thermocouple and transmitter must be the same!