There are 8 common types of thermocouples:
| Type | Metal A (+) | Metal B (-) | Theoretical limits | Seebeck coef. α (µV/°C) at T°C | Standard error | Min. error |
| B | Platinum 30% Rhodium | Platinum 6% Rhodium | 0 to 1820°C | 5,96 µv at 600°C | 0,5% | 0,25% |
| E | Nickel 10% Chrome | Constantan | -270 to 1000°C | 58,67 µV at 0°C | 1,7% to 0,5% | 1% to 0,4% |
| J | Iron | Constantan | -210 to 1200°C | 50,38 µV at 0°C | 2,2% to 0,75% | 1,1% to 0,4% |
| K | Chromel | Alumel | -270 to 1372°C | 39,45 µV at 0°C | 2,2% to 0,75% | 1,1% to 0,2% |
| N | Nicrosil | Nisil | -270 to 1300°C | 25,93 µV at 0°C | 2,2% to 0,75% | 1,1% to 0,4% |
| R | Platinum 13% Rhodium | Platinum | -50 to 1768°C | 11,36 µV at 600°C | 1,5% to 0,25% | 0,6% to 0,1% |
| S | Platinum 10% Rhodium | Platinum | -50 to 1768°C | 10,21 µV at 600°C | 1,5% to 0,25% | 0,6% to 0,1% |
| T | Copper | Constantan | -270 to 400°C | 38,75 µV at 0°C | 1% to 0,75% | 0,5% to 0,4% |
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