Colour-coded according to IEC 584-3 1989 / BS4937 Part 30 1993 Standard and miniature connections For thermocouples, extension cables and compensating cables Enable connections without thermoelectromotive force being introduced All contacts are polarised to prevent reverse polarity Fully compatible with thermocouples and thermocouple conducting components of the same type Connector pairs (plug and socket) are available for thermocouple Type-K (miniature version only)