Optical stabilization of temperature effects on an infrared gas analyzer
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United States of America Patent
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Mar 19, 2002
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N/A
app pub date -
Dec 29, 1999
filing date -
Dec 29, 1999
priority date (Note) -
Expired
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Abstract
A method of stabilizing temperature effects on a gas analyzer includes transmitting infrared energy through a plurality of cells in a reference cell drum to a sensor in the gas analyzer. The plurality of cells include at least one cell containing a reference gas and at least one cell containing an air reference. The method also includes interposing a filter in at least one of the plurality of cells in the reference cell drum, wherein energy from the infrared beam is reduced. The method further includes rotating the reference cell drum such that the infrared energy fully passes through each of the plurality of cells for a limited period of time such that the sensor generates a substantial sine wave signal.
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