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Resistance Temperature Detector (RTD). An RTD sensing element usually consists of a metal filament, which is coiled on a mandrel or etched on a substrate. The RTD element is made from a pure material, typically platinum, nickel or copper. The material has a predictable change in resistance as the temperature changes; it is this predictable change that is used to determine temperature.

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PT100 temperature sensor: meaning of "measuring current" specification

In my understanding, as long as I can measure the resistance of the RTD it should work, independent of the current flowing through it. … Is there a lower limit of the current flowing through the RTD for it to work properly? …
Camilo Rada's user avatar