Platinum-rhodium thermocouple assembly


Platinum-rhodium thermocouple assembly

A platinum-rhodium thermocouple assembly is a temperature sensor that is commonly used in high-temperature applications. It is made up of two different metal wires – one wire is made of platinum, while the other wire is made of rhodium.

The basic principle behind a thermocouple assembly is that when two dissimilar metals are joined together at one end, a temperature gradient across the two metals will cause a voltage to be generated at the other end. This voltage is proportional to the temperature difference and can be measured to determine the temperature.

The platinum-rhodium thermocouple assembly is well-suited for use in high-temperature environments because it is able to withstand temperatures up to 1800°C (3272°F). Additionally, the combination of platinum and rhodium results in a very stable and repeatable output signal, making it ideal for precise temperature measurement in applications such as furnace control, power generation, and aerospace.

The performance of a platinum-rhodium thermocouple assembly can be affected by various factors such as contamination, oxidation, and mechanical stress. Therefore, proper handling and installation are crucial to ensure accurate and reliable temperature measurement.

In summary, a platinum-rhodium thermocouple assembly is a high-temperature temperature sensor that offers excellent stability and accuracy for precise temperature measurement in various industrial applications.

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