Type B bare thermocouple wire
The Type B thermocouple is specifically designed for extremely high-temperature applications. Renowned for its high level of accuracy and stability even at very high temperatures, it is particularly effective in environments requiring consistent performance under extreme heat.
Despite its robustness at high temperatures, Type B has a lower output compared to other noble metal thermocouples, such as types R and S, at temperatures below 600°C. It is suitable for continuous use in oxidizing or inert gas atmospheres and can also be used for short-term applications in vacuum environments for temperatures up to 1700°C. However, users should be cautious about potential embrittlement due to contamination.
Key characteristics of the type B thermocouple include its stable voltage generation, resistance to high-temperature oxidation, a wide measuring range, high mechanical strength, and good pressure resistance. These features make it an ideal choice for a variety of demanding industrial applications.
High quality type B thermocouple bare wire
- Available in diameters ranging from 0.10 mm to 1.0 mm
- Provided in IEC 60584 Class 2
- Supplied with a calibration certificate
- Supplied with positive and negative leg
- Can be used when high accuracy is required
- Has a higher output and improved stability over a type S and R thermocouple
- Can be used in continuous oxidizing and inert atmospheres
- Should not be used in reducing atmospheres
Specifications and physical properties
Operating temperature
Please note that the ranges are given as indicative values and vary per diameter.
- Maximum long term continuous operating temperature: up to 1300°C
- Short term use: up to 1600°C
Chemical composition
- BP ( + ) = 70%Pt 30%Rh
- BN (-) = 94%Pt 6%
Physical properties
| BN | BP | |
|---|---|---|
| Density (g/cm3) | 21.45 | 17.6 |
| Melting point (°C) | 1771 | 1945 |
| Resistivity at 0 °C (μΩ*cm) | 9.81 | 18 |
| Tensile strength(Mpa) | 156.8 | 480.2 |
| Coefficient of heat conductivity(W/M*K) | 71 | 30 |
Environment and industrial usage
These thermocouples are ideally used in clean air or oxidizing environments and are not recommended for reduction atmospheres. Thanks to the increased amount of rhodium in Type B thermocouples, they experience reduced grain growth, which allows for a slightly higher temperature range compared to types R and S.
Type B thermocouples are utilized in a variety of high-temperature industrial settings. They are particularly useful in cement processes and incinerators, as well as other high-temperature industries. These thermocouples are adept at measuring hot gas temperatures and are suitable for inert and oxidizing applications, showcasing their versatility and reliability in challenging environments.
The type B thermocouple wire can also be used in MI thermocouple cable. More about MI cable with type B thermocouple.
Our standard type B wire
Please contact us if you need different diameters. We can supply more custom made diameters (combinations) than stated below.
Maybe a finished high temperature sensor better fits your needs. Discover more about our high temperature thermocouples with type B wire.
| Thermocouple | Class | Outside Diameter in mm | Delivery time | |
|---|---|---|---|---|
| Type B | Class 1 | 0.045 mm | 3 weeks | Send inquiry |
| Type B | Class 1 | 0.20 mm | 3 weeks | Send inquiry |
| Type B | Class 1 | 0.30 mm | 3 weeks | Send inquiry |
| Type B | Class 1 | 0.35 mm | 3 weeks | Send inquiry |
| Type B | Class 1 | 0.40 mm | 3 weeks | Send inquiry |
| Type B | Class 1 | 0.50 mm | 3 weeks | Send inquiry |
| Type B | Class 1 | 0.80 mm | 3 weeks | Send inquiry |
Delivery times stated are workingsdays with delivery to Kamet’s warehouse
How can we help you today?
Request a quotation for the wire and quantity you need for your project.
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