Calibration of gas analysis devices with open cuvette

Abstract

Gas analysis devices are measuring instruments and require periodic confirmation of their metrological parameters. This paper deals with methods of metrological support of measurements of absorption remote devices (with open cuvette). The design of the device where the operating and calibration cuvettes (with calibration gas mixture) are alternately (if necessary) placed on the optical path of the device, with the same optical elements. is proposed. This method of calibration and verification allows you to do without the use of CGM, which greatly simplifies calibration and verification of the gas analyzer at the workplace. In addition, the method reduces the calibration and verification error, since in the calibration mode the light flux passes along the same optical path as in the measurement mode, while the light flux and the degree of contamination of the optical elements by selective and non-selective components of the analyzed mixture remain unchanged.