Thermocouple Cables

What are Thermocouple Compensation Conducting Wires?

The thermocouple compensation conducting wire is designed for connecting thermocouples to instruments in the case of temperature measurement.

The thermoelectric effect consists of the production of an electromotive force (emf) created by the temperature difference between two different metal or alloy junctions making up the same circuit.

When a metal is heated its molecular agitation is reduced. Absolute zero O° Kelvin or -273.16°C corresponds to a state with no molecular agitation.

In a circuit formed by two conductors of different types connected at their ends and brought to temperature T1 and T2 respectively. A current is this created in the circuit which generates a measurable electromotive force (emf). The current created is based on the difference in temperature between T1 and T2, and the type of metals used.

In most cases, thermocouples are relatively far from the measurement monitoring/ recording device. Extension and compensation cables are used to electrically connect the inactive ends of the wires of the thermocouple to the cold weld junction (T2, monitoring/ recording device). Extension cables are manufactured with wires of the same composition as the wires of the corresponding thermocouples. They are coded with the letter “X” placed after the thermocouple code.

On the other hand, the compensation cables are manufactured with different stranding and/ or material wires than that of the corresponding thermocouple. They are respectively marked with the letter “C” placed after the thermocouple code.

Temperature Resistance

By working closely with major material engineering companies, we are able to customize our cable insulation and sheaths to attain the required temperature restriction of the working environment.

Please download the below temperature resistance chart for reference:

Colour Coding

The sheath colour of the thermocouple wires are coded according to different national and international standards. The three major coding regions are:

  • European Regions
  • US Regions and Territories
  • Japan Regions

For specific coding of each region, please download the below region charts: