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Difference between thermocouple of type-J, type-K, type-T, type-N, type-E, type-B, type-R, type-S

This page describes difference between thermocouple of type-J, type-K, type-T, type-N, type-E, type-B, type-R and type-S. The link to comparison between thermocouple, RTD and thermistor is also mentioned.

Thermocouple Materials used Temperature Range Accuracy
Type-J Iron/
Constantan
Thermocouple grade wire, -346 to 1,400F (-210 to 760C)
Extension wire, 32 to 392F (0 to 200C)
Standard: +/- 2.2C or +/- .75%
Special Limits of Error: +/- 1.1C or 0.4%
Type-K Nickel-Chromium /
Nickel-Alumel
Thermocouple grade wire, -454 to 2300F (-270 to 1260C)
Extension wire, 32 to 392F (0 to 200C)
Standard: +/- 2.2C or +/- .75%
Special Limits of Error: +/- 1.1C or 0.4%
Type-T Copper/
Constantan
Thermocouple grade wire, -454 to 700F (-270 to 370C)
Extension wire, 32 to 392F (0 to 200C)
Standard: +/- 1.0C or +/- .75%
Special Limits of Error: +/- 0.5C or 0.4%
Type-N Nicrosil /
Nisil
Thermocouple grade wire, -454 to 2300F (-270 to 392C)
Extension wire, 32 to 392F (0 to 200C)
Standard: +/- 2.2C or +/- .75%
Special Limits of Error: +/- 1.1C or 0.4%
Type-E Nickel-Chromium/
Constantan
Thermocouple grade wire, -454 to 1600F (-270 to 870C)
Extension wire, 32 to 392F (0 to 200C)
Standard: +/- 1.7C or +/- 0.5%
Special Limits of Error: +/- 1.0C or 0.4%
Type-B Platinum Rhodium -30% /
Platinum Rhodium -6%
Thermocouple grade wire, 32 to 3100F (0 to 1700C)
Extension wire, 32 to 212F (0 to 100C)
Standard: +/- 0.5%
Special Limits of Error: +/- 0.25%
Type-R Platinum Rhodium -13% /
Platinum
Thermocouple grade wire, -58 to 2700F (-50 to 1480C)
Extension wire, 32 to 392F (0 to 200C)
Standard: +/- 1.5C or +/- .25%
Special Limits of Error: +/- 0.6C or 0.1%
Type-S Platinum Rhodium - 10% /
Platinum
Thermocouple grade wire, -58 to 2700F (-50 to 1480C)
Extension wire, 32 to 392F (0 to 200C)
Standard: +/- 1.5C or +/- .25%
Special Limits of Error: +/- 0.6C or 0.1%

Difference between thermistor, RTD and thermocouple

thermocouple temperature vs voltage graph

Refer difference between Thermocouple vs RTD vs Thermistor >> for their functions, advantages and disadvantages in order to compare them.


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