Rhenium Thermocouple for vaccum furnace
The thermocouple with highest measurement accuracy of all, and be treated as standard thermocouple. Including S,R and B types, almost be assembly structure. The highest accuracy is ±1℃,and highest using temperature is 1700℃ (B).The thermocouple is mainly applied for oxide environment, and using occasions mainly be high temperature kilns.
Main technical parameters
Electrical Output: M20X1.5, NPT1/2”
Filament diameter: Φ0.5, Φ0.45, Φ0.4, Φ0.35
Accuracy class: l,ll
Protection class: IP65
Nominal pressure: normal pressures
Measuring Temperature and Tolerance
Calibration | S | R | B | ||
chemical components | Positive | Platinum | 90% | 87% | 70% |
Rhodium | 10% | 13% | 30% | ||
Negative | Platinum | 100% | 100% | 94% | |
Rhodium | 0% | 0% | 6% | ||
Type | Single Pt-Rh Thermocouple | Single Pt-Rh Thermocouple | Double Pt-Rh Thermocouple | ||
Long-term Max. temperature | 1300°C | 1300°C | 1600°C | ||
Short-term Max. temperature | 1600°C | 1600°C | 1800°C | ||
allowable deviation | ±1.5°Cor ±0.25%t | ±1.5°Cor ±0.25%t | ±1.5°Cor ±0.25%t | ||
Type and specifications
Calibration | Temperature Measuring Range | Materials of Protecting Tube | Thermal Response Time | Standard Size | |
D | L x I (for all types) | ||||
S | 0-1600 | high aluminium tube (99% Al2O3) | Max 150S | Φ16 | 300x150 350x200 400x250 450x300 550x400 650x500 900x750 1150x1000 1650x1500 2150x2000 |
Max 360S | Φ25 | ||||
R | 0-1600 | Max 150S | Φ16 | ||
Max 360S | Φ25 | ||||
B | 600-1700 | corundum tube (>95% Al2O3) | Max 150S | Φ16 | |
Max 360S | Φ25 | ||||
