I have a flow sensor -> AWM720P1 (Honeywell). And I need to zero this variation of Vout.
I need to keep the Vout in 1.00 V with no flow reading.
My problem today is that if we calibrate the equipment when the sensor has 1.00Vout (no flow), sometimes the Vout vary (even with no flow), which looks like the sensor is reading some flow into that. Whats is no truth. My microcontroller has a ADC resolution of 12 bits, so any little variation of Vout results in a big read.
Can someone suggest a circuit to do that in hardware?
I need to keep the Vout in 1.00 V with no flow reading.
My problem today is that if we calibrate the equipment when the sensor has 1.00Vout (no flow), sometimes the Vout vary (even with no flow), which looks like the sensor is reading some flow into that. Whats is no truth. My microcontroller has a ADC resolution of 12 bits, so any little variation of Vout results in a big read.
Can someone suggest a circuit to do that in hardware?
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