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