Signal processing apparatus
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United States of America Patent
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Jun 18, 1985
Grant Date -
N/A
app pub date -
Aug 25, 1982
filing date -
Aug 25, 1982
priority date (Note) -
Expired
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Abstract
Apparatus for processing the output signal of a gas chromatograph. An interface device receives the analog output signal and digitizes it, reducing the effects of noise and preparing the signal for processing by a digital microprocessor. The microprocessor detects and measures peaks in the signal and determines the desired identification (in order of ascending molecular weight) and concentration (peak amplitude) data. A logarithmic output signal is produced for displaying output signals with wide dynamic ranges on a strip chart recorder.
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