Diameter 0.5mm Type S Pure Platinum Wire Pt99.99%
Type S B R Thermocouple Wire
| Thermocouple Type | Alloy Code | Chemical Composition (%) | Recommend Long Working Temperature |
| Pt (platinum) | Rh (Rhodium ) |
| Type S | SP(Pt90Rh) | 90 | 10 | 0-1300℃ |
| SN(Pt) | 100 | |
| Type B | BP(Pt70Rh) | 70 | 30 | 0-1600℃ |
| BN(Pt94Rh) | 94 | 6 |
| Type R | RP(Pt87Rh) | 87 | 13 | 0-1300℃ |
| RN(Pt) | 100 | |
| Thermocouple Type | Long Working Temperature℃ | Max Short Working Temperature℃ |
| Type S | 1300 | 1600 |
| Type R | 1300 | 1600 |
| Type B | 1600 | 1700 |
| |
| Item | Pt90Rh | Pt | Pt87Rh | Pt70Rh | Pt94Rh |
| Melting Point℃ | 1847 | 1769 | 1860 | 1927 | 1826 |
| Density(g/cm3) | 20.00 | 21.46 | 19.61 | 17.60 | 20.60 |
| Weight per meter/g (Φ0.5mm) | 3.93 | 4.21 | 3.82 | 3.45 | 4.04 |
| Resistivity at 20℃/µΩ∙cm | 18.9 | 10.4 | 19.6 | 19.0 | 17.5 |
| Average temperature coefficient of resistance(0-1200℃)/(10-4/℃) | 14 | 31 | 13.3 | 13.3 | 20.6 |
| Tensile Strength/MPa | 314 | 137 | 344 | 483 | 276 |
| Elongation Rate(L0=100mm)/% | 35 | 40 | 35 | 30 | 35 |
| |
| Thermocouple Type | Accuracy Grade | Testing
Temperature Range/℃ | Allowable Deviation/℃ |
|
Type S(Type R)
| I | 0-1100 | +/-1 |
| 1100-1600 | +/-【1+(t-1100)*0.3%】 |
| II | 0-600 | +/-1.5 |
| 600-1600 | +/-0.25%*t |
| Type B | II | 600-1700 | +/-0.25%*t |
| III | 600-800 | +/-4 |
| 800-1700 | +/-0. 5%*t |
| “T”is the measuring terminal temperature |
