Products    Thermocouples    Noble Metal Thermocouples  

Tempsens manufacture noble metal thermocouples (also called rare metal thermocouples) for many types of industries. The most common types are R, S & B rare metal thermocouple assemblies.

Noble metal thermocouples are used for measurement of higher temperatures.

Type

Names of Materials

Application Range

R

Platinum 13% Rhodium (+)
Platinum (-)

0 to 1600°C

S

Platinum 10% Rhodium (+)
Platinum (-)

0 to 1600°C

B

Platinum30% Rhodium (+)
Platinum 6% Rhodium (-)

600 to 1600°C

 

 

 

 

 

Type R thermocouple
This thermocouple is made from Platinum which is the negative leg and much softer and Platinum 13% Rhodium which is the stiffer positive leg. It is suitable for use in oxidising or inert atmospheres and may be used  under reducing conditions or in a vacuum provided care is taken to ensure the refractory materials are free from siliceous materials. Pure recrystallised alumina is recommended. This thermocouple is suitable for continuous use up to 1400 C and for intermittent use up to 1650 C

Type S thermocouple
This thermocouple defines the international practical temperature scale between Antimony point (630.73 C ) and the gold point (1064.43 C). This thermocouple is made from Platinum which is the negative leg and much softer and Platinum 10% Rhodium which is the stiffer positive leg, and has the same operating requirements as type R. Again This thermocouple is suitable for continuous use up to 1400 C and for intermittent use up to 1650 C..

Type B thermocouple
This combination platinum thermocouple is made from Platinum-30% Rhodium and   Platinum -6% Rhodium. When they are compared to pure platinum thermocouples they suffer less from the effects of 'Rhodium migration' and may be used at somewhat higher temperatures, continuous operating 1500 C and up to 1800 C intermittently.

Applications:

Glass Industry
Semi-conductor Industry
Type S thermocouples are regularly used in the electric arc furnace process to accurately measure the steel's temperature before tapping. The cooling curve of a small steel sample can be analyzed and used to estimate the carbon content of molten steel.
 
Tempsens Instruments (I) Pvt. Ltd.
B-188 A, Road No. 5, MIA,
Madri, Udaipur-313 003, (Rajasthan) INDIA
Phone : 91-294-3057700
Fax : 91-294-2492447, 3057750
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