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Industrial thermocouples

Extension cables use the actual thermocouple materials,but in cheaper forms. This is achieved by using cheaperinsulations, wider tolerance alloys and thinnerconductors (as they will see little thermal stress in theirlifetime). They are usually produced in multi-strandedforms for ease of installation but are also available withsolid conductors.

Compensating cables use completely different alloysthat happen to exhibit very similar thermo-electricproperties up to a limited temperature (usually 200 °C).Great care should be taken to control the temperature ofthe junction between the compensating cable and theactual thermocouple material to keep it below theacceptable maximum.

Extension and compensation cables : definitions

NF C 42321 - IEC 60584-1Thermoelectric couples - tables of reference

NF C 42322 - IEC 60584-2Thermoelectric couples – tolerances

The following datasheets are based on NF M 87201standard but we can also manufacture extension andcompensation cables based on BS 5308 design guidelines.

NF C 42323 Identification of thermoelectric couples

NF C 42324 - IEC 60584-3 - HD 446-3 S1Tolerances and identification system

Standardisation