Products for High-Temperature Measurement

Product Type

Detail of Ir-Rh (Iridium/Rhodium) Thermocouple

Most of the customer utilize radiation thermometer when they measure the ultrahigh temperature like 1,700～2,100℃. Radiation thermometer is the way of measuring temperature of measuring thing with infrared rays which comes from it indirectly, not measuring it directly like thermocouple. However, there are low accuracy problem, for example, the distance between radiation thermometer and measuring thing, and it is quite difficult to measure the temperature when screen or masking exists among the distance. Therefore, currently, we have no choice but to rely on the judgment of measured value which is determined by skillful craftsman's sense and experience, so there is possibility of risk that it might decrease the production yield.

We Produced Thermocouple Combines High-Durability and Accuracy.

FURUYA METAL succeeded in developing the new type thermocouples which satisfy both high durability and accuracy to solve above problems. This thermocouple is consisting of two wires. One is plus wire of 40% Ir-Rh (60% of Iridium, 40% of Rhodium), another is minus wire of pure Iridium. Besides, we succeeded in not only developing wire, but also developing Iridium protection tube which is superior in heat resistivity and corrosion resistance. Utilizing Iridium thermocouple with Iridium protection tube enables you to have performance with further durability. Though we recommend to utilize this thermocouple under vacuum and inert atmosphere, it is also possible to use it under oxidation atmosphere depending on the requirement (oxygen concentration, measuring temperature ,parts of thermocouple composite material and furnace composite material).

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