USEFUL OPERATING RANGE
E
J
K
T
Operating Range
0 - 900 °C (32 - 1650 °F)
-200 - 0 °C (-200 - 32 °F)
0 - 750 °C (32 - 1380 °F)
0 - 1250 °C (32 - 2280 °F)
-200 - 0 °C (-325 - 32 °F)
0 - 350 °C (32 - 660 °F)
-200 - 0 °C (-325 - 32 °F)
INTERNATIONAL COLOR CODES
Special Limits of Error
± 1.0 °C or ± .4% of Reading
± 1.7 °C or ± .1% of Reading
± 1.1 °C or ± .4% of Reading
± 1.1 °C or ± .4% of Reading
± 2.2 °C or ± .2% of Reading
± .5 °C or ± .4% of Reading
± 1.0 °C or ± 1.5% of Reading
Compared to ANSI Standards
Each
Conductor
Pos. Purple
Neg. Red
Pos. White
Neg. Red
Pos. Y ellow
Neg. Red
Pos. Blue
Neg. Red
ANSI Color Coding
Extension Wire
Purple
Purple
Yellow
Blue
T/C Wire
Brown
Brown
Brown
Brown
E
J
K
T
T/C
TYPE
Overall
EP+
EN+
Overall
JP+
JN+
Overall
KP+
KN+
Overall
TP+
TN+
ANSI
T/C
Brown
Purple
Red
Brown
White
Red
Brown
Yellow
Red
Brown
Blue
Red
ANSI
EXTENSION
Purple
Purple
Red
Black
White
Red
Yellow
Yellow
Red
Blue
Blue
Red
UK
BS1843
Brown
Brown
Blue
Black
Yellow
Blue
Red
Brown
Blue
Blue
White
Blue
Germany
DIN 43714
Black
Red
Black
Blue
Red
Blue
Green
Red
Green
Brown
Red
Brown
Japan
JIS C1610-1981
Purple
Red
White
Yellow
Red
White
Blue
Red
White
Brown
Red
White
IEC
584-3
Violet
Violet
White
Black
Black
White
Green
Green
White
Brown
Brown
White
35
NOMINAL THERMOCOUPLE RESISTANCE
Ohms Per Double Foot @ 20 °C
Wire GA. B & S
14
18
20
22
24
26
28
30
34
36
20 Stranded
Diameter
.064
.040
.032
.025
.020
.016
.013
.010
.006
.005
.038
E
.176
.450
.702
1.129
1.795
2.853
4.537
7.214
18.239
29.000
.648
J
.089
.229
.357
.584
.928
1.476
2.347
3.731
9.434
15.000
.335
K
.147
.377
.588
.937
1.490
2.369
3.767
5.990
15.145
24.080
.538
T
.074
.109
.297
.483
.768
1.221
1.942
3.088
7.808
12.415
.277
22 Stranded
24 Stranded
.030
.024
1.031
1.639
.533
.848
.856
1.361
AVAILABLE THERMOCOUPLE CALIBRATIONS
High temperature connectors available upon request.
J
K
E
.441
.701
TECHNICAL SPECIFICATIONS
T
36
Compacted MgO Thermocouples
All Temprel MgO insulated thermocouples are made using the highest purity MgO for temperatures up to
2300 °F (1260 °C). The thermo-elements are all ANSI special limits of error to give your measurements
the best possible results. The various sheath materials are dependent on the application and the
following will help you make the best selection.
304 SS
310 SS
316 SS
Inconel
Hastelloy X
Maximum temperature of 1650 °F (900 °C) and is the most widely used low
temperature sheath material. It oers good corrosion resistance but is subject to
carbide precipitation in the 900 °F to 1600 °F (480 to 870 °C) range.
Maximum temperature of 2100 °F (1150 °C) and oers good mechanical and corrosion
resistance similar to 304 SS. Very good heat resistance. Not as ductile as 304 SS.
Maximum temperature of 1650 °F (900 °C) and has the best corrosion resistance
of the austenitic stainless steels. Subject to carbide precipitation in the 900 °F to
1600 °F (480 to 870 °C) range.
®
Maximum temperature 2150 °F (1175 °C) and is the most widely used thermocouple
sheath material. Good high temperature strength, corrosion resistance and is
resistant to chloride-ion stress corrosion, cracking and oxidation. Do not use in
sulfur bearing environments.
®
Maximum temperature 2200 °F (1205 °C) widely used in aerospace applications.
Resistant to oxidizing, reducing and neutral atmospheric conditions. Excellent
high temperature strength.
Standard Probe
Diameters
.032” + .001 - .0005”
.040” + .001 - .0005”
.063” ± .001”
.090” ± .001”
.125” + .002 - .001”
.188” + .002 - .001”
.250” + .003 - .001”
All MgO compacted thermocouples can be bent on a radius of twice the probe diameter.
Inconel ®is the registered trademark of INCO Alloys International.
Hastelloy X
®
is the registered trademark of Haynes International.
Suggested Upper
Temperature Limits
1290 °F (700 °C)
1290 °F (700 °C)
1690 °F (920 °C)
1830 °F (1000 °C)
1960 °F (1070 °C)
2100 °F (1150 °C)
2100 °F (1150 °C)
37
Measuring Junctions
Grounded Junctions
Ungrounded Junctions
Exposed Junctions
Semi Sheield Junctions
The thermo-elements are welded into the end cap using the
same weld rod as the sheath material. Fast time response.
Recommended for high-pressure applications.
The thermo-elements are welded together and are electrically
isolated from the sheath. Recommended for applications where
stray EMF’s would aect the reading.
The thermo-elements are welded together outside of the sheath.
This provides the fastest time response but exposes the elements
to contamination. Electrically isolated from the sheath.
The thermo-elements are welded together outside of the sheath.
This provides the fastest time response but exposes the elements
to contamination. Electrically isolated from the sheath.
Approximate Response Time in Seconds
Values are for 2/3 of total temperature change from 0 to 100% as measured in water.
20-AWG bare wire junction measured in gas.
OUTSIDE
DIAMETER
.020
.032
.040
.062
.090
.125
.188
.250
20 AWG bare wire junction
APPROXIMATE
WIRE GAUGE
38
34
32
28
25
22
19
16
APPROXIMATE
WALL THICKNESS
.003
.004
.006
.009
.012
.017
.025
.033
GROUNDED
JUNCTION
.02
.02
.04
.22
.33
.50
1.00
2.20
UNGROUNDED
JUNCTION
.03
.07
.13
.40
.68
1.10
2.30
4.10
.45
TECHNICAL SPECIFICATIONS
38
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