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Thermocouple Color Codes

These are the Thermocouple Color codes used in industry to differentiate between their types.The reason for using color code is we can easily able to identify the thermocouple type. As each type uses different materials for construction their output will be different for a constant temperature for example 100 degrees. Hence by means of the color code, the confusion is eliminated. It is very important for all professionals working with thermocouples to be aware of all colour codes.

Also, the extension cables have different colour code standards as shown below, this will help to differentiate thermocouple cables from other cables like signal, power cables etc.