METHOD FOR CALIBRATING GAS ANALYZERS Russian patent published in 2022 - IPC G01C15/02 G01N30/04 

FIELD: analytical measurements.

SUBSTANCE: invention relates to gas analytical measurements and can be used to calibrate gas analyzers. The method for calibrating gas analyzers in dynamic mode includes supplying a calibration gas mixture (CGM) to the gas analyzer in turn with samples in automatic mode, forming a reference gas mixture (RGM), monitoring and maintaining the set pressure and flow rates at the inlet of the gas analyzers. The reference gas mixture (RGM) is formed using two CGMs, and these CGMs are fed sequentially. The mixing apparatus with intensive mixing is initially filled with a carrier gas with a known concentration of the analyzed component (PGS-1), then the mixing apparatus is purged with a carrier gas with a known constant flow rate or a known amount of the analyzed component is injected into the purged apparatus with a pulse (PGS-2), while the gas analyzer is passed through the flow meter to the gas analyzer inlet, then the change in the concentration of substances in the gas analyzer over time is determined, then the calibration characteristic of the gas analyzer is obtained from the obtained response of the gas analyzer.

EFFECT: savings of calibration gas mixtures (CGM) and reduction of their range, reduction of time and laboriousness of the gas analyzer calibration process are achieved.

1 cl, 4 dwg