Consider toxic gas density when positioning a gas monitor

摘要

Question:Is it true that "heavy" gases sink to the floor?Answer:When selecting a portable gas meter to measure toxic vapors,many people ask whether the gas they are measuring is "heavier" or "lighter" than air.The assumption is that a "heavier" gas tends to sink to the floor;therefore,the floor is the place with the greatest exposure hazard and the best place to monitor.