Pressure compensation method and apparatus for a chromatograph

Details Pressure compensation method and apparatus for a chromatograph Pressure compensation method and apparatus for a chromatograph

1978-02-24

1979-02-27

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Gas chromatography

G01N 3108

Patent

active

041412370

ABSTRACT:
A method and apparatus is disclosed for correcting errors in a chromatographic analysis caused by changes in ambient atmospheric pressure. The output signal from a chromatograph is summed with the output signal from a pressure transducer. The output signal from the pressure transducer varies with changes in the atmospheric pressure from a reference pressure and is calibrated in such a manner as to provide a corrected chromatographic analyzer output signal when it is summed with the output signal from the chromatograph. In this manner pressure compensation is provided where normalization of the chromatographic analyzer output signal is not possible or is undesirable.

REFERENCES:
patent: 3240052 (1966-03-01), Reinecke et al.
patent: 3283563 (1966-11-01), Turner et al.

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