CALIBRATION OF FLOWMETERS
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United States of America Patent
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Issued Date -
Sep 26, 2013
app pub date -
Mar 21, 2013
filing date -
Mar 22, 2012
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Abstract
There is described herein a method for calibrating gas flowmeters comprising only one calibration procedure performed at the device level. The step of calibrating the differential pressure sensor itself may be omitted, and the design of the sensor may therefore be simplified by eliminating the sensor conditioner and instead using a microcontroller on the device for signal processing. This is done by a two-point calibration procedure with the use of three correction coefficients to compensate for the variability of flow tubes and pressure sensors.
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