K type thermocouple color code

There are many types of thermocoupleseach with its own unique characteristics. You can easily identify a thermocouple type by the colors of its wire insulation.

Thermocouples of all different types have their own colour coding to aid identification however this is not necessarily as easy as it may seem. As well as each thermocouple type having its own colour code, there are various national and international standards each having their own colour code system. It is important to positively identify which standard is being used before you can identify the thermocouple type. Other countries outside of Europe have their own standards and on occasion, these find there way into the UK market. Other colour codes which are now officially obsolete but may still be used, particularly on older machinery, are the old British Standard colour code which complied with BS and BS also the German DIN colour codes which complied with DIN

K type thermocouple color code

To help identify the thermocouple type and thermoelement conductor polarity, various colour codes have been developed and are in use around the world. There is still a demand for cables and sensors to be supplied to obsolete colour codes, such as BS In the UK and Europe, the most widely used colour code for Type K thermocouple cable is to the international IEC standard which is as follows:. Occasionally in the UK, American ANSI colours may be found which have a yellow outer sheath with yellow and red conductors as shown below. You may also come across some old redundant colours such as the obsolete BS standard and these are shown in the table below:. Type KCA - This compensating cable conductor combination is little known and generally not available. It should not be confused with the more popular Type KCB as shown below. If suitable to your requirements it can save money where long runs are necessary. In the UK and Europe, the most widely used colour code for Type T thermocouple cable is to the international IEC standard which is as follows:. Type TX extension cable conductors are made from the same constituent elements as Type T thermocouples. There is no compensating cable available for Type T, however the extension cable is relatively inexpensive.

For some cables, particularly glass fibre insulation, the colour coding is not very clear. Occasionally in the UK, American ANSI colours may be found which have a purple outer sheath with k type thermocouple color code and red conductors as shown below. With respect to other colour coding standards, there are a couple of other difficulties in identifying type J.

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Japanese to JIS C Used for interconnecting Type "K" thermocouples and instrumentation as an alternative to Type "K" material. Color coded for use as a compensating cable for Type "K" thermocouples. This compensating cable can also be used for extending Type "T" thermocouples. Many low temperature and cryogenic applications. Suitable for use in a mildly oxidizing or reducing atmosphere as an unprotected thermocouple sensor. Commonly used in the plastic molding industry.

K type thermocouple color code

You will see in the table below, that commonly, negative wires are red, the outer sheath for thermocouple grades is brown and the positive lead is color coded according to thermocouple type. For extension grade cables this positive leg color is also carried over to the outer insulation color. Fiberglass insulated wires follow the same system but have a colored tracer rather than a solid color. We also have an extensive range of data sheets available for all our Thermocouple Grade Wire and Thermocouple Extension Wire. Extension wire can offer a cost advantage. For base metal thermocouples, the wire is the same composition as the corresponding thermocouple. For noble metal thermocouples, the wire is an entirely different alloy which matches the noble metal characteristics over a specified temperature range. Cables with a Standard Limit of Error use standard thermocouple grade wire and this accuracy grade is suitable for the majority of uses. These wires use a purer form of the thermocouple alloys which in turn improve the accuracy as listed above.

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How to Identify a Thermocouple by Wire Color. Thermocouple Types. So again, a type K thermocouple connector would have a green casing and a type J would be black. As well as each thermocouple type having its own colour code, there are various national and international standards each having their own colour code system. The positive conductor is insulated with a colour, for example type K has a green insulation, type J has a black insulation. There is no compensating cable available for Type E. Are there any non-standardised thermocouple colours? The magnetic pull is very slight for type K so needs some care to notice it. Other countries to have their own standards include Japan and France but these are rarely seen if ever. For type J the positive conductor is strongly magnet as it is pure Iron. If there is not a jacket then you can use the magnet test as above. Both conductors for type T are not magnetic so this is not a way of positively identifying type T.

To help identify the thermocouple type and thermoelement conductor polarity, various colour codes have been developed and are in use around the world.

Necessary cookies are absolutely essential for the website to function properly. The positive conductor is insulated with a colour, for example type K has a green insulation, type J has a black insulation. Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Thermocouple connectors are colour coded to the jacket colour of the thermocouple. Basics of the IEC colour code system For all thermocouple types the negative conductor is always identified by a white insulation. If there is not a jacket then you can use the magnet test as above. But opting out of some of these cookies may have an effect on your browsing experience. It should not be confused with the more popular Type KCB as shown below. Address 2. These cookies do not store any personal information. Type E thermocouples have a temperature range of negative to degrees Celsius. Occasionally in the UK, American ANSI colours may be found which have a yellow outer sheath with yellow and red conductors as shown below.