Regarding thermocouple/thermistor junction boxes and cold-junction compensation
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Is the junction box used to connect the compensation wires? So, cold-end compensation essentially means that the ambient temperature at the cold end is not 0 degrees Celsius, and therefore it’s necessary to correct this error? Is the precision four-wire > three-wire > two-wire?
It seems that thermal resistors don’t require a compensation wire; they use a three-wire system. For two-wire thermocouples, it is necessary to compensate for the wires. The ambient temperature should not exceed 100 degrees.
The junction box is used for wiring. The thermocouple is connected to a compensation wire via a terminal box for cold junction compensation ； The thermal resistor is transmitted via three wires through a terminal box to eliminate the influence of line resistance.
Thank you so much! I’ve received it; I’m ready to get started