|
ANSI
Code |
Alloy
Combination |
Thermocouple Color
Coding |
Maximum
Temperature Useful Range |
EMF
(mV) Over Max. Temperature Range |
Limits
of Error**
(Whichever is Greater) |
+Lead |
-Lead |
Thermocouple
Grade |
Extension
Grade |
Standard |
Special |
U* |
COPPER
Cu |
COPPER-LOW
NICKEL
Cu-Ni |
NONE
ESTABLISHED |
 |
0
to 50°C
(32 to 122°F)
Ext. Grade |
|
|
|
B |
PLATINUM
30% RHODIUM
Pt-30% Rh |
PLATINUM
6% RHODIUM
Pt-6% Rh |
NONE
ESTABLISHED |
 |
0
to 1700°C
(32 to 3092°F)
Therm. Grade
0 to 100°C
(32 to 212°F)
Ext. Grade |
0
to 13.820 |
0
to 1700°C (32 to 3092°F)
0.5% over
800°C |
Not
Established |
|
G*
(W) |
TUNGSTEN
W |
TUNGSTEN-
26% RHENIUM
W-26% Re |
NONE
ESTABLISHED |
 |
0
to 2320°C
(32 to 4208°F)
Therm. Grade
0 to 260°C
(32 to 500°F)
Ext. Grade |
0
to 38.564 |
4.5°C
to 425°C
1.0% to 2320°C |
Not
Established |
C*
(W5) |
TUNGSTEN-
5% RHENIUM
W-5% Re |
TUNGSTEN-
26% RHENIUM
W-26% Re |
NONE
ESTABLISHED |
 |
0
to 2320°C
(32 to 4208°F)
Therm. Grade
0 to 870°C
(32 to 1600°F)
Ext. Grade |
0
to 37.066 |
4.5°C
to 425°C
1.0% to 2320°C |
Not
Established |
D*
(W3) |
TUNGSTEN-
3% RHENIUM
W-3% Re |
TUNGSTEN-
25% RHENIUM
W-25% Re |
NONE
ESTABLISHED |
 |
0
to 2320°C
(32 to 4208°F)
Therm. Grade
0 to 260°C
(32 to 500°F)
Ext. Grade |
0
to 39.506 |
4.5°C
to 425°C
1.0% to 2320°C |
Not
Established |