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Comparison of Thermocouples and RTD’s for Temperature Measurement
K-Type Thermocouples versus RTD’s
| Criteria |
Thermocouple |
RTD |
| Accuracy @ 500 °C |
2 °C |
1.15°C |
| Stability |
2 °C/year |
<0.1°C/year |
| Temperature range |
-270 to 1260 °C |
-270 to 850°C |
| Sensitivity |
40µV/°C |
2mV/°C |
| Linearity |
moderate |
good |
| Type of measurement |
highest temperature |
average temperature |
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