INITIAL
CALIBRATION TOLERANCES FOR THERMOCOUPLE WIRE
|
THERMOCOUPLE
TYPE
|
°C
|
°F
|
Wire
Alloys
|
ANSI/ASTM
Type Symbol
|
Temperature
Range
|
Standard
Limits
|
Special
Limits
|
Temperature
Range
|
Standard
Limits
|
Special
Limits
|
Copperl
(+) vs. Constantan (-)
|
T
|
-200°
to -65°
-65° to +130°
+130° to +350°
|
+/-
1.5%
+/- 1°
+/- .75%
|
+/-
.8%
+/- .5°
+/- .4%
|
-330°
to -85°
-85° to +270°
+270° to +660°
|
+/-
1.5%
+/- 1.8°
+/- .75%
|
+/-
.8%
+/- .9°
+/- .4%
|
*Iron
(+) vs. Constantan (-)
|
J
|
0°
to +285°
+285° to +750°
|
+/-
2.2°
+/- .75%
|
+/-
1.1°
+/- .4%
|
+32°
to +545°
+545° to +1400°
|
+/-
4°
+/- .75%
|
+/-
2°
+/- .4%
|
Chromel
TM (+) vs. Constantan (-)
|
E
|
-200°
to -170°
-170° to +250°
+250° to +340°
+340° to +900°
|
+/-
1%
+/- 1.7°
+/- 1.7°
+/- .5%
|
+/-
1°
+/- 1°
+/- .4%
+/- .4%
|
-330°
to -270°
-270° to +480°
+480° to +640°
+640° to +1600°
|
+/-
1%
+/- 3°
+/- 3°
+/- .5%
|
+/-
1.8°
+/- 1.8°
+/- .4%
+/- .4%
|
Chromel
TM (+) vs. *Alumel (-)
|
K
|
-200°
to -110°
-110° to -0°
0° to +285°
+285° to +1250°
|
+/-
2%
+/- 2.2°
+/- 2.2°
+/- .75%
|
+/- 1.1°
+/- .4%
|
-330°
to -165°
-165° to +32°
+32° to +545°
+545° to +2300°
|
+/-
2%
+/- 4°
+/- 4°
+/- .75%
|
+/- 2°
+/- .4%
|
Nicrosil
(+) vs. Nisil (-)
|
N
|
0°
to +285°
+285° to +1250°
|
+/-
2.2°
+/- .75%
|
+/-
1.1°
+/- .4%
|
+32°
to +545°
+545° to +2300°
|
+/-
4°
+/- .75%
|
+/-
2°
+/- .4%
|
Platinum-10%
Rhodium (+) vs.
Platinum (-)
|
S
|
0°
to +600°
+600° to +1450°
|
+/-
1.5 °
+/- .25%
|
+/-
.6 °
+/- .1%
|
+32°
to +1110°
+1110° to +2650°
|
+/-
2.7°
+/- .25%
|
+/-
1.1°
+/- .1%
|
Platinum-13%
Rhodium (+) vs.
Platinum (-)
|
R
|
0°
to +600°
+600° to +1450°
|
+/-
1.5 °
+/- .25%
|
+/-
.6 °
+/- .1%
|
+32°
to +1110°
+1110° to +2650°
|
+/-
2.7°
+/- .25%
|
+/-
1.1°
+/- .1%
|
Platinum-30%
Rhodium (+) vs.
Platinum-6% (-)
|
B
|
+870°
to +1700°
|
+/-
.5%
|
+/-
.25%
|
+1600°
to +3100°
|
+/-
.5%
|
+/-
.25%
|
Tungsten-5%
Rhenium (+) vs.
Tungsten-26% Rhenium (-)
|
C^
|
+400°
to +2300°
|
+/-
1%
|
-
|
+800°
to +4200°
|
+/-
1%
|
-
|
(*)
Magnetic
|
NOTE
- Percent limits apply directly to temperatures in °C
units, but for °F equivalents are applied to the
number of °F above or below the ice point (+32°F).
[i.e., Limit (°F) = (Temp.°F - 32°F) x Percentage]
|
TM (TradeMark, Hoskins Mfg Co.)
|
(^)
Not ANSI/ASTM Type Symbol
|
INITIAL
CALIBRATION TOLERANCES FOR THERMOCOUPLE EXTENSION WIRE
|
THERMOCOUPLE
TYPE
|
°C
|
°F
|
Extension
Wire Alloys
|
ANSI/ASTM
Type Symbol
|
Temperature
Range
|
Standard
Limits
|
Special
Limits
|
Temperature
Range
|
Standard
Limits
|
Special
Limits
|
Copperl
(+) vs. Constantan (-)
|
TX
|
-60°
to +100°
|
+/-
1°
|
+/-
.5°
|
-75°
to +210°
|
+/-
2 °
|
+/-
1 °
|
*Iron
(+) vs. Constantan (-)
|
JX
|
0°
to +200°
|
+/-
2.2°
|
+/-
1.1°
|
+32°
to +400°
|
+/-
4°
|
+/-
2°
|
Chromel
TM (+) vs. Constantan (-)
|
EX
|
+0°
to +200°
|
+/-
1.7°
|
+/-
1.1°
|
+32°
to +400°
|
+/-
3°
|
+/-
2°
|
Chromel
TM (+) vs. *Alumel (-)
|
KX
|
0°
to +200°
|
+/-
2.2°
|
+/-
1.1°
|
+32°
to +400°
|
+/-
4°
|
+/-
2°
|
Nicrosil
(+) vs. Nisil (-)
|
NX
|
0°
to +200°
|
+/-
2.2°
|
+/-
1.1°
|
+32°
to +400°
|
+/-
4°
|
+/-
2°
|
Copper
(+) vs. Copper Alloy(-)
|
SX
RX
|
+25°
to +200°
|
+/-
7°
|
-
|
+75°
to +400°
|
+/-
12°
|
-
|
PCLW630
vs. Copper
|
BX
|
0°
to +200°
|
+/-
2.2°
|
-
|
+75°
to +400°
|
+/-
4°
|
-
|
Copper
vs. Copper
|
BX
|
0°
to +65°
|
+/-
1°
|
-
|
+32°
to +150°
|
+/-
2°
|
-
|
Alloy
405 vs. Alloy 426
|
CX^
|
0°
to +870°
|
+/-
7°
|
-
|
+32°
to +1600°
|
+/-
12°
|
-
|
(*)
Magnetic
|
|
TM (TradeMark, Hoskins Mfg Co.)
|
(^)
Not ANSI/ASTM Type Symbol
|