Each type of temperature sensor has a particular set of conditions for which it is best suited. RTDs, in particular Pt100, offer several advantages:
A wide temperature range with only one sensor
A wide temperature range (approximately -200 to +600°C) with only one sensor.
With a temperature range up to +600掳C, RTDs can be used in all but the highest-temperature industrial processes.
When made using metals such as platinum, they are very stable and are not affected by corrosion or oxidation. Other materials such as nickel, copper, and nickel-iron alloy have also been used for RTDs.
However, these materials are not commonly used since they have lower temperature capabilities and are not as stable or repeatable as platinum.