Method of calibrating and calibration apparatus for a moisture concentration measurement apparatus

摘要

A method of calibrating a gas analysis apparatus that measures the moisture concentration in a gas using a radiating unit includes a moisture concentration measurement value calibrated based on the relationship between the intensity of an absorption spectrum of moisture of a concentration to be measured and the intensity of an absorption spectrum of an other component gas that can be measured by the radiating unit, for which the relationship to the intensity of the absorption spectrum of moisture of the measured prescribed concentration is known, and based on the intensity of an absorption spectrum obtained by measuring the other component gas.

主权项

1. A method of calibrating a moisture concentration measurement apparatus that measures the moisture concentration in a sample gas using a light source, the method comprising:
(a) deriving an intensity of an absorption spectrum of a known substance which is not moisture at a first concentration; (b) deriving an intensity of an absorption spectrum of moisture at a second concentration, the intensity of the absorption spectrum of moisture at the second concentration being derived based on the intensity of the absorption spectrum for the known substance at the first concentration derived in (a) and an intensity ratio of the absorption spectra for the known substance and for the moisture known in advance, and (c) calibrating a moisture concentration measurement value based on the intensity of the absorption spectrum of the moisture at the second concentration derived in (b).