Thermocouple Comparison
The table below describes properties of several different thermocouple types. Within the tolerance columns, T represents the temperature of the hot junction, in degrees Celsius. For example, a thermocouple with a tolerance of ±0.0025×T would have a tolerance of ±2.5 °C at 1000 °C.
| Type | Temperature range °C (continuous) | Temperature range °C (short term) | Tolerance class one (°C) | Tolerance class two (°C) | IEC Color code | BS Color code | ANSI Color code |
|---|---|---|---|---|---|---|---|
| K | 0 to +1100 | −180 to +1300 | ±1.5 between −40 °C and 375 °C ±0.004×T between 375 °C and 1000 °C |
±2.5 between −40 °C and 333 °C ±0.0075×T between 333 °C and 1200 °C |
|||
| J | 0 to +750 | −180 to +800 | ±1.5 between −40 °C and 375 °C ±0.004×T between 375 °C and 750 °C |
±2.5 between −40 °C and 333 °C ±0.0075×T between 333 °C and 750 °C |
|||
| N | 0 to +1100 | −270 to +1300 | ±1.5 between −40 °C and 375 °C ±0.004×T between 375 °C and 1000 °C |
±2.5 between −40 °C and 333 °C ±0.0075×T between 333 °C and 1200 °C |
|||
| R | 0 to +1600 | −50 to +1700 | ±1.0 between 0 °C and 1100 °C ± between 1100 °C and 1600 °C |
±1.5 between 0 °C and 600 °C ±0.0025×T between 600 °C and 1600 °C |
Not defined. | ||
| S | 0 to 1600 | −50 to +1750 | ±1.0 between 0 °C and 1100 °C ± between 1100 °C and 1600 °C |
±1.5 between 0 °C and 600 °C ±0.0025×T between 600 °C and 1600 °C |
Not defined. | ||
| B | +200 to +1700 | 0 to +1820 | Not Available | ±0.0025×T between 600 °C and 1700 °C | No standard use copper wire | No standard use copper wire | Not defined. |
| T | −185 to +300 | −250 to +400 | ±0.5 between −40 °C and 125 °C ±0.004×T between 125 °C and 350 °C |
±1.0 between −40 °C and 133 °C ±0.0075×T between 133 °C and 350 °C |
|||
| E | 0 to +800 | −40 to +900 | ±1.5 between −40 °C and 375 °C ±0.004×T between 375 °C and 800 °C |
±2.5 between −40 °C and 333 °C ±0.0075×T between 333 °C and 900 °C |
|||
| Chromel/AuFe | −272 to +300 | n/a | Reproducibility 0.2% of the voltage; each sensor needs individual calibration. | ||||
Read more about this topic: Thermocouple
Famous quotes containing the word comparison:
“Clay answered the petition by declaring that while he looked on the institution of slavery as an evil, it was ‘nothing in comparison with the far greater evil which would inevitably flow from a sudden and indiscriminate emancipation.’”
—State of Indiana, U.S. public relief program (1935-1943)