Type R Thermocouple (Platinum Rhodium -13% / Platinum): The Type R is used in very high temperature applications. It has a higher percentage of Rhodium than the Type S, which makes it more expensive. The Type R is very similar to the Type S in terms of performance. It is sometimes used in lower temperature applications because of its high accuracy and stability. Type R has a slightly higher output and improved stability over the type S.
Type R Temperature Range:
Thermocouple grade wire, -50 to 1600 C
Type N Thermocouple Grade WireExtension wire, 0 to 200 C
Accuracy (whichever is greater):
Standard: +/- 1.5C or +/- .25%
Special Limits of Error: +/- 0.6C or 0.1%
The Type R thermocouple is composed of a platinum-13% rhodium (+) wire versus a platinum (-) wire. This R type thermocouple can be used in oxidizing or inert atmospheres with a service temperature range between 0°C and 1600°C.
They should never be used in reducing atmospheres. As with all platinum type thermocouples, they should always be protected with a ceramic protection tube. Alumina insulators and protection tubes preferred to prevent silica contamination from alumina ceramic tube, silicon nitride tube and silicon carbide tube.
When Type R thermocouple is continuously used at high temperatures, the elements can develop excessive grain growth in time causing mechanical breakage to the thermocouple. In most situations, platinum thermocouples should not be placed in any type of metal tube or in applications where metallic vapors are present. R thermocouple is widely used high temperature tube furnace, chamber furnace, and industry bogie hearth furnace. At the same time, the silicon carbide heating elements and Moly-D heating elements is also working together in high temperature furnace.
Thermocouple Type R and Type S thermocouple are very same. Difference is very little during using.
Type R and S thermocouple are the most popular rare metal thermocouple types. They are very similar in conductor construction. The main difference is that Type R is more popular in the UK whereas Type S thermocouple is more popular in Europe. As the cost of Platinum and Rhodium is high in comparison to base metal thermocouples, Type R and Type S wire can be recovered and recycled from failed thermocouples. The negative leg on a Type R or S thermocouple is pure Platinum and the positive leg is Platinum/Rhodium.
Type R Thermocouple (Platinum Rhodium -13% / Platinum): The Type R is used in very high temperature applications. It has a higher percentage of Rhodium than the Type S, which makes it more expensive. The Type R is very similar to the Type S in terms of performance. It is sometimes used in lower temperature applications because of its high accuracy and stability. Type R has a slightly higher output and improved stability over the type S.
Type R Temperature Range:
Thermocouple grade wire, -50 to 1600 C
Type N Thermocouple Grade WireExtension wire, 0 to 200 C
Accuracy (whichever is greater):
Standard: +/- 1.5C or +/- .25%
Special Limits of Error: +/- 0.6C or 0.1%
The Type R thermocouple is composed of a platinum-13% rhodium (+) wire versus a platinum (-) wire. This R type thermocouple can be used in oxidizing or inert atmospheres with a service temperature range between 0°C and 1600°C.
They should never be used in reducing atmospheres. As with all platinum type thermocouples, they should always be protected with a ceramic protection tube. Alumina insulators and protection tubes preferred to prevent silica contamination from alumina ceramic tube, silicon nitride tube and silicon carbide tube.
When Type R thermocouple is continuously used at high temperatures, the elements can develop excessive grain growth in time causing mechanical breakage to the thermocouple. In most situations, platinum thermocouples should not be placed in any type of metal tube or in applications where metallic vapors are present. R thermocouple is widely used high temperature tube furnace, chamber furnace, and industry bogie hearth furnace. At the same time, the silicon carbide heating elements and Moly-D heating elements is also working together in high temperature furnace.
Thermocouple Type R and Type S thermocouple are very same. Difference is very little during using.
Type R and S thermocouple are the most popular rare metal thermocouple types. They are very similar in conductor construction. The main difference is that Type R is more popular in the UK whereas Type S thermocouple is more popular in Europe. As the cost of Platinum and Rhodium is high in comparison to base metal thermocouples, Type R and Type S wire can be recovered and recycled from failed thermocouples. The negative leg on a Type R or S thermocouple is pure Platinum and the positive leg is Platinum/Rhodium.
