3. Conclusion

Temperature measurement chains have benefited from the considerable progress made in electronics over the last few decades. Nowadays, the metrological quality of a temperature measurement chain depends essentially on the characteristics of the integrated sensor. Before undertaking a calibration, it is therefore advisable for the operator to enquire about the nature of this sensor, so as to be able to take into account the precautions for use and the influencing parameters specific to this type of instrument.

Platinum resistance thermometers are relatively easy to use. Provided a few precautions are taken, their calibration will present no difficulty. However, above 600°C, they tend to lack stability, becoming a major source of uncertainty in the final result.

Thermocouples, so commonly used in industry and so easy to use, can lead to significant...