METHOD AND DEVICE FOR DISSOLVED GAS ANALYSIS

摘要

A system, comprising at least one source for irradiating electromagnetic radiation into a sample fluid and a reference fluid resulting in a change in a temperature of the sample fluid and a change in a temperature of the reference fluid, and a processing subsystem that monitors and determines a concentration of a gas of interest dissolved in the sample fluid based upon a difference between the change in the temperature of the sample fluid and the change in the temperature of the reference fluid, wherein the reference fluid does not contain the gas of interest, and the electromagnetic radiation has a wavelength range corresponding to a spectral absorption range of the gas of interest.

主权项

1. A method, comprising:
irradiating a sample fluid and a reference fluid by electromagnetic radiation having a first wavelength range resulting in a first time temperature change of the sample fluid and a first time temperature change of the reference fluid; determining a first difference based upon the first time temperature change of the sample fluid and the first time temperature change of the reference fluid; irradiating the sample fluid and the reference fluid by electromagnetic radiation having a second wavelength range resulting in a second time temperature change of the sample fluid and a second time temperature change of the reference fluid; determining a second difference based upon the second time temperature change of the sample fluid and the second time temperature change of the reference fluid; and determining a concentration of a gas of interest in the sample fluid based upon the first difference and the second difference.