Thermocouple cables are used to extend a signal from the temperature sensor to the measuring instrument, which can be at some distance away. There are three grades of cable to choose from:
Made of exactly the same alloy as the thermocouple itself. It therefore functions similarly to a thermocouple. It is suited for indoor use with a choice of insulation materials, depending on the operating environment: ceramic fiber, glass fiber, fluoropolymer and silicone rubber.
Thermocouple extension grade
These extension cables have the same nominal composition as the thermocouple, however they are calibrated as class 1 for temperatures up to 200°C in accordance with DIN 43710. You recognise our thermocouple extension grade cables by the letter ‘ x’ . For example, Kx stands for thermocouple type K, extension grade.
This type of cable is suitable for use indoors and out and Insulation materials include fluoropolymers, silicon rubber and thermoplastic compounds.
Thermocouple compensating grade
Compensating cables are used when the thermocouple cable needs to stretch over long distances through ambient temperatures. In such cases a cable with an accuracy comparable to the thermocouple and extension grades is needed, but using more cost-effective materials. The alloys used do not need to be identical to the thermocouple they are linked to, however the thermoelectric properties do need to be the same. These cables are identified with the letter ‘c’ according to DIN IEC 60584. The ‘C’ is placed next to the code letter identifying the thermocouple.
The compensating grade cables are suited for indoor and outdoor use and are insulated using either fluoropolymer, silicon rubber or thermoplastic compound.
For more information about thermocouple cables please visit our product page. You can use the various filters in the left hand column to find the cables that match your required specifications.