• Material Shape：Round Wire
• Range of Application：Temperature Measuring
• Certification：ISO9001, CE
• Brand：Ohmalloy
• Transport Package：500m,Roll
• Specification：20AWG
• Trademark：OHMALLOY
• Origin：China
• HS Code：9025900090
• Production Capacity：500000meter,Month

Thermocouple Variety and Index
Variety
Type
Measurement Range(°C)
NiCr-NiSi
K
-200-1300
NiCr-CuNi
E
-200-900
Fe-CuNi
J
-40-750
Cu-CuNi
T
-200-350
NiCrSi-NiSi
N
-200-1300
NiCr-AuFe0.07
NiCr-AuFe0.07
-270-0 
 
 
3 . Dimensions and Tolerance of Fiberglass Insulated Thermocouple Wire
Dimensions / Tolerance mm ) : 4.0+-0.25

Color code & initial calibration tolerances for thermocouple wire:Thermocouple Type ANSI Color Code Initial Calibration Tolerances Wire Alloys Calibration +/-
Conductor JacketTemperature Range Standard
Limits Special
Limits Iron(+) vs. 
Constantan(-) J White/Red Brown 0°C to +285°C
285°C to +750°C ±2.2°C
± .75% ±1.1°C
± .4% CHROMEL(+) vs.
ALUMEL(-) K Yellow/Red Brown -200°C to -110°C
-110°C to 0°C
0°C to +285°C
285°C to +1250°C ± 2%
±2.2°C
±2.2°C 
± .75% ±1.1°C
± .4% Copper(+) vs.
Constantan(-) T Blue/Red Brown -200°C to -65°C
-65°C to +130°C
130°C to +350°C ± 1.5%
±1°C 
± .75% ± .8%
± .5°C
± .4% CHROMEL(+) vs.
Constantan(-) E Purple/Red Brown -200°C to -170°C
-170°C to +250°C
250°C to +340°C
340°C+900°C ± 1%
±1.7°C
±1.7°C
± .5% ±1°C
±1°C
± .4% 
± .4% 
Color Code & Initial Calibration Tolerance for Extension Wire:Extension typeANSI Color CodeInitial Calibration TolerancesWire AlloysCalibration+/-
ConductorJacketTemperature RangeStandard
LimitsSpecial
LimitsIron (+) vs.  Constantan(-)JXWhite/RedBlack0°C to +200°C±2.2°C±1.1°CCHROMEL (+) vs.  ALUMEL (-)KXYellow/RedYellow0°C to +200°C±2.2°C±1.1°CCopper(+) vs. Constantan(-)TXBlue/RedBlue-60°C to +100°C±1.1°C± .5°CCHROMEL(+) vs. Constantan(-)EXPurple/RedPurple0°C to +200°C±1.7°C±1.1°C