A Thermocouple is a sensor used to measure temperature. Thermocouples consist of two wire legs made from different metals. The wires legs are welded together at one end, creating a junction. This junction is where the temperature is measured. When the junction experiences a change in temperature, voltage is created. There are many types of thermocouples, each with its own unique characteristics in terms of temperature range, durability, vibration resistance, chemical resistance, and application compatibility. Type J, K, T, & E are "Base Metal" thermocouples. Thermocouples are used in many industrial, scientific, and OEM applications. They can be found in nearly all industrial markets; Power Generation, Oil/Gas, Pharmaceutical, BioTech, Cement, Paper, Plastic, Packing, Pulp, etc. Thermocouples are also used in everyday appliances like stoves, furnaces, and toasters.
Types of Thermocouples:
| |
Temperature Range |
| Type K Thermocouple (Nickel-Chromium / Nickel-Alumel) |
- Thermocouple grade wire, (-270 to 1260C)
- Extension wire, (0 to 200C)
|
| Type J Thermocouple (Iron/Constantan) |
- Thermocouple grade wire, (-210 to 760C)
- Extension wire, (0 to 200C)
|
| Type T Thermocouple (Copper/Constantan) |
- Thermocouple grade wire, (-270 to 370C)
- Extension wire, (0 to 200C)
|
| Type E Thermocouple (Nickel-Chromium/Constantan) |
- Thermocouple grade wire, (-270 to 870C)
- Extension wire, (0 to 200C)
|
| Type N Thermocouple (Nicrosil / Nisil) |
- Thermocouple grade wire, (-270 to 392C)
- Extension wire, (0 to 200C)
|
| Type S Thermocouple (Platinum Rhodium -10% / Platinum) |
- Thermocouple grade wire, (-50 to 1480C)
- Extension wire, (0 to 200C)
|
| Type R Thermocouple (Platinum Rhodium -13% / Platinum) |
- Thermocouple grade wire, (-50 to 1480C)
- Extension wire, (0 to 200C)
|
| Type B Thermocouple (Platinum Rhodium -30% / Platinum Rhodium -6%) |
- Thermocouple grade wire, (0 to 1700C)
- Extension wire, (0 to 100C)
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