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Topic: knowing temperature of a self-heated rtd (Read 173 times) previous topic - next topic

carpekd

I need to self-heat an rtd to a specific elevated temperature.  Is it possible to know the temperature while applying an elevated voltage to it?

pylon

In theory you can measure the current flowing through and the voltage drop over it which results in the resistance. This is specific for a temperature, so you can calculate the temperature. If this really works depends on the actual RTD (type) and how you actually plan to heat the element (constant current or constant voltage).
Just out of curiosity: Why do you want to heat the RTD by itself?

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