Thermocouple - Special Limits of Error (SLE) vs. Standard Limits of Error

Standard limits of Error: These thermocouples use standard “thermocouple grade” wire and make up the great majority of sensors.

Special Limits of Error: These thermocouples are made with a higher grade of thermocouple wire that is purer than standard wire, which increases their accuracy. They are more expensive than standard thermocouples.