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RTD measurement error budget calculation and ADC selection



I am going to design temperature measurement system for industrial application  with below given specifications

Range -50°C to 300°C
Step 0.1°C
Accuracy ±2°C
Wiring Configuration


Operating Temperature Range

-20°C to 55°C

I need to do some design calculations like

1. ADC resolution ?

3. ADC error budget ?

4. ADC selection ?

5. Signal conditioning error budget ?

please give me brief guidance for calculation of above given points and suggest design application note for the reference