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Getting a better resolution with MPX2010DP

Question asked by Guillermo Bustos on Sep 1, 2014
Latest reply on Sep 12, 2014 by Joshevelle

Hi, im using a MPX2010DP pressure sensor, Sourcing with 15v from 7815 regulator,  ADC 10bits built-in  pic18f4550, between sensor and pic there is a INA128 Instrumentation Amplifier, gain= 133,3, R= aprox 373 ohms, the resolution I've get now its about 100pascales, or in water column --> 1cm= 0.3937 in, I've got a 100mV of noisy signal, this resolution its after making an average by software of 64 samples from the adc, if i could get a better resolution it would be great, somebody worked with this sensor and got more resolution? i was trying to minimize de noise but i couldnt yet, maybe a should use another sensor.  Thanks!.

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