Continuous gas analyzer

Details Continuous gas analyzer Continuous gas analyzer

1997-04-28

1999-04-13

Williams, Hezron E.

Measuring and testing

Gas analysis

With compensation detail

G01N 700

Patent

active

058940839

ABSTRACT:
A standard gas introduction passage and an air inlet port are provided on positions downstream and upstream a dehumidifier respectively. A zero gas and a span gas are measured in dry states, a value of the atmosphere introduced from the air inlet port which is measured in the same moisture concentration as the sample gas is subtracted as a moisture interference value from the measured value of the sample gas for correcting moisture interference, and calibration curve data are applied to a result of measurement after the correction. Calibration can be finished in a short period, whereby the capacities of standard gas cylinders can be reduced and the overall device can be miniaturized.

REFERENCES:
patent: 4869874 (1989-09-01), Falat
patent: 4921886 (1990-05-01), Ewan et al.
patent: 5242836 (1993-09-01), Rose
patent: 5469369 (1995-11-01), Rose-Pehrsson et al.

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