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These gasses are dangerous to flight crew or

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Unformatted text preview: or failure of exhaust components heaters. These gasses are dangerous to flight crew or passengers. CARBON MONOXIDE DETECTORS: These detectors are located in air craft cabins or cockpits. Carbon monoxide is by product of incomplete combustion and is found in varying degrees in all smoke and fumes from burning carbonaceous substances. 0.2% of CO concentration produces headache mental dullness and physical laziness. Indicator button which consist of tablet to find out the concentration of CO installed instrument panel or cockpit wall or worn as badge. Tablet's color changes from normal tan to darker shadier of gray to black. The color change depends on concentration of carbon monoxide. If concentration is 50 ppm (0.005%) if takes 15 to 30 min. 100 ppm (0.01%) change in color tan to gray 2-5 min. tan to dark gray 15-20 min. Portable testers or sniffers consist of replaceable indicator tube which contains yellow silica gel. Impregnated with a complex silico molybdate compound and is catalyzed using palladium sulfate. When air is drawn by tube, if air contains carbon monoxide yell...
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