Types of Thermocouple
| Thermocouple Type | Composition | Temperature Range | |
| B | Platinum 30% Rhodium (+) | 2600-3100 degrees F | |
| Platinum 6% | 1370-1700 degrees C | ||
| C | W5Re Tungsten 5% Rhenium (+) | 3100-4200 degrees F | |
| W26Re Tungsten 26% Rhenium (-) | 1650-2315 degrees C | ||
| E | Chromel (+) | 200-1650 degrees F | |
| Constantan (-) | 95-900 degrees C | ||
| J | Iron (+) | 200-1500 degrees F | |
| Constantan (-) | 95-760 degrees C | ||
| K | Chromel (+) | 200-2300 degrees F | |
| Alumel (-) | 95-1260 degrees C | ||
| M | Nickel (+) | 34-2250 degrees F | |
| Nickel (-) | 0-1287 degrees C | ||
| N | Nicrosil (+) | 1200-2300 degrees F | |
| Nisil (-) | 650 -1260 degrees C | ||
| R | Platinum 13% Rhodium (+) | 1600-2640 degrees F | |
| Platinum (-) | 870-1450 degrees C | ||
| S | Platinum 10% Rhodium (+) | 1800-2640 degrees F | |
| Platinum (-) | 980-1450 degrees C | ||