FIBRE-OPTICAL GAS ANALYZER Russian patent published in 1997 - IPC

FIELD: analytic and measurement instrumentation for detection and determination of concentration of gases in coal, chemical, petrochemical, gas and other industries. SUBSTANCE: fibre-optical gas analyzer has radiator, input optical fibre, multiway dish composed of three spherical mirrors, output optical fibre, unit for information recording and processing installed in sequence and coupled optically. Spectral integrated demultiplexer is mounted between output optical fibre and unit for information recording and processing, butts of input and output optical fibres are located on continuation of sphere of collective mirror in immediate vicinity of its edge. Both spherical mirrors are mounted for joint turn with reference to center of curvature of collective mirror in common meridiem plane of all mirrors. EFFECT: enhanced functional reliability and accuracy. 1 dwg