| Type |
Positive and negative pole materials |
Model |
Range |
Wire diameter |
Accuracy |
Allowable difference |
| K |
Nickel chromium nickel silicon |
WRK (WRN) |
-200~1260C |
0.3~3.2 |
I |
±1.5°C or ±0.4%t |
| N |
Nickel chromium silicon nickel silicon magnesium |
WRN (WRM) |
-200~1300C |
0.3~3.2 |
I |
±1.5°C or ±0.4%t |
| E |
Nickel chrome Copper nickel |
WRE |
-200~900C |
0.3~3.2 |
I |
±1.5°C or ±0.4%t |
| J |
Iron copper nickel |
WRJ (WRF) |
-40~750C |
0.3~3.2 |
I |
±1.5°C or ±0.4%t |
| T |
Copper copper nickel |
WRT (WRC) |
-200~350C |
0.2~1.6 |
I |
±0.5°C or ±0.4%t |
| S |
Platinum and rhodium10 Platinum |
WRS (WRP) |
0~1600C |
0.5 |
I |
±1°C or ±[1+0.3%(t-1100)]°C |
| R |
Platinum and rhodium13 Platinum |
WRR (WRQ) |
0~1600C |
0.5 |
I |
±1°C or ±[1+0.3%(t-1100)]°C |
| B |
Platinum and rhodium30 Platinum and rhodium6 |
WRB (WRR) |
0~1700C |
0.5 |
Ⅱ |
±0.25%t |
| C |
Tungsten rhenium5 Tungsten rhenium26 |
WRC (WRW) |
0~2300C |
0.5 |
Ⅱ |
±4°C or 1.0%|t| |
| D |
Tungsten rhenium3 Tungsten rhenium25 |
WRD (WRW) |
0~2300C |
0.5 |
Ⅱ |
±4°C or 1.0%|t| |
