Image Number 4 for United States Patent #6534769.
A gas stream monitoring system including a low cost main stream gas analyzer system is disclosed herein. The low cost main stream gas analyzer system is calibrated by a side stream gas analyzer system included in the gas stream monitoring system. Once calibrated, the side stream system is placed into standby mode such that diversions of portions of the gas stream can be minimized. The calibrated output signals from the low cost main stream system contain corrections for gas interference, pressure change, temperature change, manufacturing tolerance, component flaws, and any other sources of error.
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