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PT100 (RTD) sensor interface with micro controller

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saidutt

saidutt

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hi friends,

I am trying to interface PT100 to microcontroller which has 10 bit adc.
i have tried with voltage divider circuit with PT100.
it is not working out .
i am sending circuit diagram also which i have used .its giving an error of 4 deg variation.
so please help me out with circuit diagram.
i need a circuit diagram for PT100 which gives me less error of 1 deg.

please help me out
 

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