DIGITAL_ALTIMETER

Published:2009/6/17 4:03:00 Author:May | From:SeekIC

A pressure sensor (IC4) is used with a dc amplifier to convert the bridge output (IC4) to a sin-gle-ended voltage. ICld provides a reference voltage for setting barometric pressure. IC3 is an A/D converter manufactured by Intersil. This drives an LCD module. Calibration reads out in fact. A vac-uum pump and a water-based manometer can be used for sensor calibration.



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