Gas Detection

How NDIR (non-dispersive infrared) CO2 sensors detect gas

May 19 2006

Author: Robert Henderson on behalf of BW Technologies by Honeywell

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According to NIOSH concentrations of 40,000 ppm or higher should be regarded as immediately dangerous to life and health. Exposure to very high concentrations (e.g. exposure to 6% volume CO2 for several minutes or 30% volume CO2 for 20-30 seconds), has been linked to permanent heart damage, as evidenced by altered electrocardiograms. Concentrations greater than 10% are capable of causing loss of consciousness within 15 minutes or less.

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