Thermocouple Type |
ANSI Color Code |
Initial Calibration Tolerances |
Wire Alloys |
Calibration |
+/-
Conductor |
Overall |
Temperature 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% |
