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Industrial thermocouple wire
Cu-CuNi (constantan) thermocouple wire

● Standard GB / T 2903-1998

● applicable conditions:
oxidation and neutral atmosphere etc.
Temperature Range: -200 ~ 400 ℃

● Temperature the upper limit          

Wire dia mm

Long-term temperature the upper limit ℃

Short-term temperature the upper limit ℃

0.2   0.3

150

200

0.5   0.8

200

250

1.0   1.2

250

300

1.6   2.0

300

350

● Uneven thermo-emf    

Grade

Temperature of measuring side ℃

Uneven thermo-emf μV

Fe

CuNi

200

3

12

200

4

22

-196

4

12

● Thermo-emf and tolerance

Wire dia
mm

Grade

Thermocouple thermo-emf
tolerance at temperature measurement points μV

NiCr - Pt thermocouple thermo-emf
tolerance at temperature measurement pointsμV

Pt-NiSi thermocouple thermo-emf
tolerance at temperature measurement degreesμV

0.2

0.3  0.5

temperature point

-79℃

-196℃

-79℃

-196℃

-79℃

-196℃

-2757±37

-5539±48

-332±7

-212±10

-2426±30

-5327±38

0.2  0.3

0.5  0.8

temperature point

100℃

200℃

100℃

200℃

100℃

200℃

4279±24

9288±43

773±12

1837±12

3505±12

7451±31

4279±47

9288±80

773±15

1837±15

3505±32

7451±65

1.0  1.2

1.6  2.0

temperature point

100℃

200℃

250℃

100℃

200℃

250℃

100℃

200℃

250℃

4279±24

9288±43

12013±56

773±12

1837±12

2462±12

3505±12

7451±31

9551±44

4279±47

9288±80

12013±105

773±15

1837±15

2462±15

3505±32

7451±65

9551±90