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Chandra214
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We have a four wire PT100 signal conditioning circuit, which transpires resistance to voltage.
7mV constitutes one degree celsius. we are using a 12bit ADC to decode the analog input.
When measured from a true RMS multi meter, the ADC input voltages are stable upto millivolt ( 4 1/2 digit multi meter). But upon reading the ADC values in software, we are unable to see the same stability in the voltage. the ADC shows a fluctuation of few millivolts.
Can somebody throw some light on the issue.
Thanks,
Prathap Chandra
7mV constitutes one degree celsius. we are using a 12bit ADC to decode the analog input.
When measured from a true RMS multi meter, the ADC input voltages are stable upto millivolt ( 4 1/2 digit multi meter). But upon reading the ADC values in software, we are unable to see the same stability in the voltage. the ADC shows a fluctuation of few millivolts.
Can somebody throw some light on the issue.
Thanks,
Prathap Chandra