High Temperature Thermocouple with Basic End Seal
High Temperature Metal Sheathed Thermocouples (Type 27)
These high temperature thermocouples are used in applications where other thermocouples would fail due to excessive heat or severe environments. Utilising specialist exotic sheath materials such as Platinum 10% Rhodium, Molybdenum and Tantalum they can be used in service temperatures up to 2300°C. The combination of conductor, insulation material and sheath must be carefully selected to suit your process environment, service temperature and installation requirements (i.e. whether the probe is flexible or not). Our experienced sales team are on hand to assist where needed, so please do not hesitate to contact us if help is required.
- Typically used with high temperature thermocouple types R, S, B, C and D
- Temperatures up to 2200°C (continuous use) or 2300°C (short term use)
- Semi-Rigid (mineral insulated) and Rigid (tube) styles available
- Basic end seal termination to allow the user to apply their own termination on site
- Calibration service for oxidizing and inert environments is available up to 1600°C
| Code | Sheath Material | Operational Properties | MI (Semi-Rigid) Tube (Rigid) |
Insulation Material | Thermocouple Types | Available Sheath Diameters (mm) | Max. Continuous Temperature |
| 600 | Inconel 600® |
Suitable for use in inert, vacuum and oxidizing environments.
Minimum bend radius: 5 x sheath diameter. Not recommended for use above 800°C in oxidising atmospheres. Do not use in sulphur bearing atmospheres above 550°C. |
Semi-Rigid | MgO | R, S and B | 1.0mm, 1.5mm, 3.0mm, 3.2mm, 4.8mm, 6.0mm and 6.4mm | 1175°C |
| 600T | Inconel 600® | As above. Do not bend. | Rigid | Al2O3 | R, S and B | 3.0mm, 3.2mm, 4.8mm, 6.0mm and 6.4mm | 1175°C |
| P10R | Platinum 10% Rhodium | Suitable for use in inert and oxidizing environments. Minimum bend radius: 10 x sheath diameter. |
Semi-Rigid | MgO | R, S and B | 1.0mm, 1.5mm and 1.6mm | 1550°C |
| TAN | Tantalum | Suitable for use in inert and vacuum environments. Minimum bend radius: 5 x sheath diameter. |
Semi-Rigid | MgO, Al2O3, HfO2 | R, S, B, C and D | 1.0mm, 1.5mm, 1.6mm, 3.0mm and 3.2mm | 2200°C |
| NIO | Niobium 1% Zirconium | Suitable for use in inert and vacuum environments.
Minimum bend radius: 10 x sheath diameter. |
Semi-Rigid | MgO, Al2O3, HfO2 | R, S, B, C and D | 1.6mm and 3.2mm | 2200°C |
| MOL | Molybdenum | Suitable for use in inert, vacuum and reducing environments.
Do not bend. |
Rigid | MgO, Al2O3, HfO2 | R, S, B, C and D | 1.5mm, 1.6mm, 3.0mm,
3.2mm, 4.8mm, 6.0mm and 6.4mm |
2000°C |
| CMOL | Coated Molybdenum | Suitable for use in inert and oxidizing environments.
Do not bend. |
Rigid | MgO, Al2O3, HfO2 | C and D | 1.5mm, 1.6mm, 3.0mm, 3.2mm and 6.4mm | 1600°C |
