Types of thermocouple

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Thermocouples are of different types based on the materials used. Common types include J, K, T, E, R, S, and B.

Thermocouples are made of two different metals or alloys.
The most common types are J, K, T, E, R, S, and B.
Type J is made of iron and constantan, and is suitable for use in vacuum, oxidizing, or reducing atmospheres.
Type K is made of chromel and alumel, and is suitable for use in oxidizing or inert atmospheres.
Type T is made of copper and constantan, and is suitable for use in oxidizing or reducing atmospheres.
Type E is made of chromel and constantan, and is suitable for use in vacuum, inert, oxidizing, or reducing atmospheres.
Type R and S are made of platinum and platinum-rhodium alloys, and are suitable for use in oxidizing or inert atmospheres.
Type B is made of platinum and rhodium, and is suitable for use in vacuum, inert, or oxidizing atmospheres.

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