Infrared optical gas-measuring system

Details Infrared optical gas-measuring system Infrared optical gas-measuring system

1997-09-02

1999-08-24

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

25033912, 250343, G01N 2135, G01N 2131, G01N 2161

Patent

active

059427558

ABSTRACT:
An infrared optical gas-measuring system with two infrared radiation sources (1, 2) and with at least one multispectral sensor (5). The system is suitable for determining the concentrations of different components of a gas flow. The two infrared radiation sources (1, 2) radiate in different spectral ranges with two different cycle frequencies f.sub.1, f.sub.2. The rays emitted are first passed through a radiation coupler (3), after which they pass through the gas flow to be measured, which is limited by windows (8), at right angles to the direction of flow. The rays finally enter a multispectral sensor (5), of which there is at least one, for measuring the intensity.

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patent: 4914719 (1990-04-01), Conlon et al.
patent: 5130544 (1992-07-01), Nilsson
H. Riris, C. B. Carlisle, D.F. McMillen, and DE. Cooper, Aug. 20, 1996, Explosives detection with a frequency modulation spectrometer, Applied Optics/Vo. 35, No. 24.

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