INFRARED OPTICAL GAS ANALYZER WITH AUTOMATIC TEMPERATURE CORRECTION Russian patent published in 2019 - IPC G01N21/3504 

FIELD: measuring equipment.

SUBSTANCE: invention relates to the field of measurement equipment and concerns an infrared optical gas analyzer. Gas analyzer includes housing, cuvette, two sources of infrared radiation, amplifier with switch, microcontroller, infrared radiation sources power supply switches, radiation sources current limiter and infrared radiation sensor. Cuvette is made in the form of a cylindrical tube, in which the main source of infrared radiation with a reflector, an additional source of infrared radiation and an infrared radiation sensor are placed in series on the same optical axis. Radiation sensor combines two receivers of infrared radiation and a temperature sensor in its housing. Interference filters are installed in front of radiation receivers. Main and additional sources of infrared radiation are connected through the current limiter to the power supply source, and their activation is controlled by a microcontroller. Receivers of infrared radiation are displaced from the axis of the tube of the measuring cuvette so that an additional source of infrared radiation installed directly in front of the sensor housing does not screen the radiation of the main source of infrared radiation.

EFFECT: technical result consists in improvement of stability and accuracy of measurements.

1 cl, 5 dwg