GAS ANALYZER AND OPTICAL UNIT FOR USE THEREIN

A gas analyzer contains an optical block inside which a channel is formed from its inlet to outlet for infra-red radiation passage, a control unit connected to the optical block inlet and outlet, and an infra-red radiation source located at the optical block 1 inlet, as well as an infra-red radiation detector installed at the said block outlet; used as an infra-red radiation source is a quick- acting differential photovoltaic detector with a mirror filter, whose reflection and spectral characteristics of transmission are consistent with the measured gas absorption spectrum and spectrum of the infra-red radiation source correspondingly. The gas analyzer achieves high sensitivity and minimum energy consumption. The optical block contains the inner channel for infrared radiation passage, the infra-red radiation source located at the channel inlet and the infra-red radiation detector located at the channel outlet. At that, the channel is made in the form of a multiway mirror optical tray capable of concentrating the transmitted infra-red radiation from its inlet, along its path and at its outlet to the detector of this radiation, and as an infra-red radiation source, a quick-acting pulse LED is used, which creates the directional infra-red radiation to the concentrator located in the tray. The gas analyzer optical block provides for high coefficient of IR radiation transmission, minimum dissipation of radiation energy from its source to detector, and small sizes.