Process for operating a gas sampling device for colorimetric gas analysis
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United States of America Patent
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May 6, 2014
Grant Date -
Mar 1, 2012
app pub date -
Jun 27, 2011
filing date -
Aug 28, 2010
priority date (Note) -
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Abstract
A process for controlling the delivery of a quantity of gas to be measured through a test gas tube (60) with a pump (20), a sensor system for pressure and flow measurement (12, 14, 16) and a control and regulating unit (30). A common mode offset of a differential pressure sensor (14), determined in a calibration process, is taken into account in the process for operating the gas sampling device to increase the accuracy of a gas volume being delivered with pump (20) from the measuring environment (50).
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