International Thermocouple Color Codes - Thermocouple and Extension Grade Wires

U.S. & CANADIAN Czech Netherlands International International Japanese French THERMO- (ANSI/MC96.1, ANSI/ASTM E230) British German COUPLE ALLOY THERMOCOUPLE EXTENSION PLUG & TYPE IEC 584-3 IEC 584-3 BS 1843 DIN 43710 JIS C 1610 NFC 42-324 COMBINATION GRADE GRADE JACK Intrinsically Safe Brown Blue Brown Blue Blue Brown Brown Blue Copper Blue Blue Brown Brown White Red Red Yellow + + Blue + + + + + + T Constantan ------Red Red White White Blue Brown White Blue (Copper-Nickel) ● Iron Brown Black Black Blue Black Blue Yellow Black White White Black Black Yellow Red Red Yellow (magnetic) + + Black + + + + + + J Constantan ------White (Copper-Nickel) Red Red ● White Blue Blue White Black

Brown Purple Purple Blue Brown Black Purple Purple Purple Purple Purple Purple Brown Red Red Yellow Nickel - Chromium + + Purple + + + + + + E Constantan ------Red Red White White Blue Black Purple (Copper- Nickel) ● White Brown Yellow Green Blue Red Green Blue Yellow Nickel - Chromium Yellow Yellow Green Green Brown Red Red Yellow + + Yellow + + + + + + K Nickel - Aluminium ------Red Red ● White White Blue Green White Purple (magnetic)

Nicrosil Brown Orange Blue Orange Orange Orange Pink No Standard No Standard No Standard (Nickel-Chromium- Silicon) + Orange Pink Pink Orange + + + + (Use American (Use American (Use American N Nisil - - - - - Red Red ● Color Codes) Color Codes) Color Codes) (Nickel-Silicon-Magnesium) White White Blue

Platinum Green Orange Blue Green White Black Green Black Orange Orange White Red Red Yellow Rhodium -10% None + Green + + + + + + S Established ------Platinum Red ● White White Blue White White Green

Platinum Green Orange Blue Green White Black Green Black Orange Orange White Red Red Yellow Rhodium -13% None + Green + + + + + + R Established ------Platinum Red ● White White Blue White White Green

Platinum Gray Gray Gray Gray Gray White Gray No Standard Red Red No Standard Rhodium - 30% None + (Uncom- + + + B - pensated) - (Use Copper - - (Use Copper Platinum Established Red White Wire) Gray Gray Wire) Rhodium - 6% (Compensated Cable) ● (Compensated Cable) (Compensated Cable)

Tungsten Red Green No Standard No Standard No Standard Rhenium - 5% None + Red (Use American (Use American (Use American C Established - Tungsten Red ● Color Codes) Color Codes) Color Codes) Rhenium - 26%

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