BibliotekaThermocouple tolerances
All thermocouples sold by Pico Technology are manufactured to strict industry tolerances, specifically IEC 60584-2 :1993 / BS EN 60584-1:2013, to guarantee accuracy for any given thermocouple. This topic provides the IEC colour code, thermocouple material and tolerances for the 3 tolerance classes for Type B, E, J, K, N, R, S and T thermocouples. Temperatures are expressed in degrees Celsius.
| Thermocouple tolerances: IEC 60584-2:1993 / BS EN 60584-1:2013 | |||||
| Type | IEC color code | Thermocouple Material ( + / - ) | Tolerance Class 1 (°C) | Tolerance Class 2 (°C) | Tolerance Class 3 (°C) |
| Type T | T | Copper/Constantan (Cu/Con) | -40 to +350 °C: ±0.5 °C or ±T x 0.004 | -40 to +350 °C: ±1.0 °C or ±T x 0.0075 | -200 to +40 °C: ±1.0 °C or ±T x 0.015 |
| Type J | J | Iron/Constantan (Fe/Con) | -40 to +750 °C: ±1.5 °C or ±T x 0.004 | -40 to +750 °C: ±2.5 °C or ±T x 0.0075 | |
| Type E | E | Nickel Chrome/Constantan (NiCr/Con) | -40 to +800 °C: ±1.5 °C or ±T x 0.004 | -40 to +900 °C: ±2.5 °C or ±T x 0.0075 | -200 to +40 °C: ±2.5 °C or ±T x 0.015 |
| Type K | K | Nickel Chrome/Nickel Aluminium (NiCr/NiAl) | -40 to +1000 °C: ±1.5 °C or ±T x 0.004 | -40 to +1200 °C: ±2.5 °C or ±T x 0.0075 | -200 to +40 °C: ±2.5 °C or ±T x 0.015 |
| Type N | N | Nicrosil/Nisil (NiCrNi/NiSi) | -40 to +1000 °C: ±1.5 °C or ±T x 0.004 | -40 to +1200 °C: ±2.5 °C or ±T x 0.0075 | -40 to +1000 °C: ±1.5 °C or ±T x 0.004 |
| Type R | R | Platinum-13% Rhodium/Platinum (Pt-13Rh/Pt) | 0.0 to 1600 °C: ±1.0 °C or ±[1+ t-10000.003] | -40 to 1600 °C: ±1.5 °C or ±T x 0.0025 | |
| Type S | S | Platinum-10% Rhodium/Platinum (Pt-10Rh/Pt) | 0.0 to 1600 °C: ±1.0 °C or ±[1+ t-10000.003] | -40 to 1600 °C: ±1.5 °C or ±T x 0.0025 | |
| Type B | B | Platinum-30% Rhodium/Platinum-6% Rhodium (Pt-30Rh/Pt-6Rh) | +600 to 1700 °C: ±1.5 °C or ±T x 0.0025 | +600 to 1700 °C: ±4.0 °C or ±T x 0.005 | |
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