
● 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 |
||
Ⅰ |
200 |
3 |
12 |
Ⅱ |
200 |
4 |
22 |
Ⅲ |
-196 |
4 |
12 |
● Thermo-emf and tolerance
Wire dia |
Grade |
Thermocouple thermo-emf |
NiCr - Pt thermocouple thermo-emf |
Pt-NiSi thermocouple thermo-emf |
|||||||||
0.2 0.3 0.5 |
temperature point |
-79℃ |
-196℃ |
-79℃ |
-196℃ |
-79℃ |
-196℃ |
||||||
Ⅲ |
-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℃ |
||||||
Ⅰ |
4279±24 |
9288±43 |
773±12 |
1837±12 |
3505±12 |
7451±31 |
|||||||
Ⅱ |
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℃ |
|||
Ⅰ |
4279±24 |
9288±43 |
12013±56 |
773±12 |
1837±12 |
2462±12 |
3505±12 |
7451±31 |
9551±44 |
||||
Ⅱ |
4279±47 |
9288±80 |
12013±105 |
773±15 |
1837±15 |
2462±15 |
3505±32 |
7451±65 |
9551±90 |
||||