Gas analyzer and gas analyzing method

Details Gas analyzer and gas analyzing method Gas analyzer and gas analyzing method

G - Physics

01

N

73/59

G01N 21/35 (2006.01)

Patent

CA 1119427

GAS ANALYZER AND GAS ANALYZING METHOD ABSTRACT A gas analyzer and gas analyzing method are described of the non-dispersive infrared type wherein infrared energy is passed through a sample cell contain- ing an unknown mixture of gas. The infrared energy passing through the cell is received by a detector and an electrical signal is produced representative thereof. A rotary fitter wheel positions at least one filter in the path of the infrared energy, resulting in a pulsating detector output. The electrical signal is processes to produce an output indicating the concentration of the constituents of the gas mixture in the sample cell. Synchronization with the processed electrical signal is obtained by deriving synchronizing pulses directly from the electrical signal produced by the detector.

337035

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