Thermocouple Type Temperature Ranges

International Type Designation

Conductor Material

Temperature Range (°C)

K

Ni-Cr (+)

0 to +1100

Ni-Ai (-)

T

Cu (+)

-185 to +300

Cu-Ni (-)

J

Fe (+)

+20 to +700

Cu-Ni (-)

E

Ni-Cr (+)

0 to +800

Cu-Ni (-)

N

Ni-Cr-Si (+)

0 to +1250

Ni-Si (-)

 

International Type Designation

Conductor Material

Temperature Range (°C)

R

Pt – 13% Rh (+)

0 to +1600

Pt (-)

S

Pt – 10% Rh (+)

0 to +1500

Pt (-)

B

Pt – 30% RH (+)

+100 to +1600

Pt – 6% Rh (-)

Commonly used platinum metal thermocouples

 Mineral insulated thermocouple

Code

Conductor Combinations

National standards for Output of Thermocouple

Approximate Generated EMF Change per Degree Change with Reference Junction at 0°C

Approximate Working Temperature Range of Measuring Junction

+Leg

-Leg

Continuous

Short Term

100°C

500°C

1000°C

K

Nickel – Chromium

Nickel – Aluminium

BS EN 60584

ANSI/MC96.1

DIN EN 60584

NF EN60 584

JISC 1602

0 to +1100

-180 to +1350

42

43

39

T

Copper

Copper – Nickel

BS EN 60584

ANSI/MC96.1

DIN EN 60584

NF EN60 584

JISC 1602

-185 to +300

-250 to +400

46

-

-

J

Iron

Copper – Nickel

BS EN 60584

ANSI/MC96.1

DIN EN 60584

NF EN60 584

JISC 1602

+20 to +700

-180 to +750

54

56

59

N

Nickel – Chromium – Silicon

Nickel- Silicon - Magnesium

BS EN 60584

ANSI/MC96.1

DIN EN 60584

NF EN60 584

JISC 1602

0 to +1150

-270 to +1300

30

38

39

E

Nickel – Chromium

Copper –Nickel

BS EN 60584

ANSI/MC96.1

DIN EN 60584

NF EN60 584

JISC 1602

0 to +800

-40 to +900

68

81

-

R

Platinum – 13% Rhodium

Platinum

BS EN 60584

ANSI/MC96.1

DIN EN 60584

NF EN60 584

JISC 1602

0 to +1600

-50 to +1700

8

10

13

S

Platinum – 10% Rhodium

Platinum

BS EN 60584

ANSI/MC96.1

DIN EN 60584

NF EN60 584

JISC 1602

0 to +1550

-50 to +1750

8

9

11

B

Platinum – 30% Rhodium

Platinum – 6% Rhodium

BS EN 60584

ANSI/MC96.1

DIN EN 60584

NF EN60 584

JISC 1602

+100 to +1600

+100 to +1820

1

5

9

G

Tungsten

Tungsten 26% Rhenium

There are no officially recognised standards for Type G

+20 to +2320

0 to +2600

5

16

21

C

Tungsten – 5% Rhenium

Tungsten – 26% Rhenium

There are no officially recognised standards for Type C

+50 to +1820

+20 to +2300

15

18

18

D

Tungsten 3% Rhenium

Tungsten 25% Rhenium

There are no officially recognised standards for Type D

0 to +2100

0 to +2600

13

20

20

 

Code

Thermocouple Output Tolerances

Type

Tolerance class 1

Tolerance Class 2

Tolerance Class 3

K

Temperature Range

Tolerance Value

Temperature Range

Tolerance Value

-40°C to +375ºC

±1.5ºC

375ºC to 1000 ºC

±0.004 |t|

-40°C to +333ºC

±2.5ºC

333 ºC to 1200 ºC

±0.004 |t|

-167°C to +40ºC

±2.5ºC

-200ºC to -167 ºC

±0.015 |t|

T

Temperature Range

Tolerance Value

Temperature Range

Tolerance Value

-40°C to +125ºC

±0.5ºC

125ºC to 350 ºC

±0.004 |t|

-40°C to +133ºC

±1.0ºC

133ºC to 350 ºC

±0.0075 |t|

-67°C to +40ºC

±1.0ºC

-200ºC to -67 ºC

±0.015 |t|

J

Temperature Range

Tolerance Value

Temperature Range

Tolerance Value

-40°C to +375ºC

±1.5ºC

375ºC to 750 ºC

±0.004 |t|

-40°C to +333ºC

±2.5ºC

333ºC to 750 ºC

±0.0075 |t|

-

-

-

-

N

Temperature Range

Tolerance Value

Temperature Range

Tolerance Value

-40°C to +375ºC

±1.5ºC

375ºC to 1000 ºC

±0.004 |t|

-40°C to +333ºC

±2.5ºC

333ºC to 1200 ºC

±0.0075 |t|

-167°C to +40ºC

±2.5ºC

-200ºC to -167 ºC

±0.015 |t|

E

Temperature Range

Tolerance Value

Temperature Range

Tolerance Value

-40°C to +375ºC

±1.5ºC

1100ºC to 1600 ºC

±(1 +0.003(t-1100)°C

-40°C to +333ºC

±2.5ºC

333ºC to 900 ºC

±0.0075 |t|

-167°C to +40ºC

±2.5ºC

-200ºC to -167ºC

±0.015 |t|

R

Temperature Range

Tolerance Value

Temperature Range

Tolerance Value

0°C to +1100ºC

±1.0ºC

1100ºC to 1000 ºC

±(1 +0.003(t-1100)°C

0°C to +600ºC

±1.5ºC

600ºC to 1000 ºC

±0.004 |t|

-

-

-

-

S

Temperature Range

Tolerance Value

Temperature Range

Tolerance Value

0°C to +1100ºC

±1.0ºC

1100ºC to 1600 ºC

±(1 +0.003(t-1100)°C

0°C to +600ºC

±1.5ºC

600ºC to 1600 ºC

±0.0025 |t|

-

-

-

-

B

Temperature Range

Tolerance Value

Temperature Range

Tolerance Value

-

-

-

-

-

-

375ºC to 1000 ºC

±0.004 |t|

600°C to +800ºC

±4.0ºC

800ºC to 1700 ºC

±0.005 |t|

G

Temperature Range

Tolerance Value

Temperature Range

Tolerance Value

-

-

-

-

0°C to +425ºC

±4.5ºC

425ºC to 2320 ºC

±1.0%

-

-

-

-

C

Temperature Range

Tolerance Value

Temperature Range

Tolerance Value

-

-

-

-

0°C to +425ºC

±4.4ºC

425ºC to 2320 ºC

±1.0%

-

-

-

-

D

Temperature Range

Tolerance Value

Temperature Range

Tolerance Value

-

-

-

-

0°C to +425ºC

±4.5ºC

400ºC to 2320 ºC

±1.0%

-

-

-

-

 

 

 

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