Alarms, Central Gas System, Oxygen Depletion

Definition : Central gas system alarms designed to activate audible (i.e., sound) and/or visual alarms when the oxygen in the air supply line is below its normal (about 21%) atmospheric concentration (i.e., oxygen depletion). These devices typically consist of an independent electronic unit, sensors for continuous assessment of the pressure and/or concentration of oxygen, electronic circuits to amplify the signal, and visual displays and/or audible warnings that usually activate an alarm when the concentration of oxygen is in a range from 18% to 19%. Oxygen depletion alarms are usually activated by pressure loss (e.g., in central gas system oxygen lines and oxygen cylinder delivery lines). The alarms may be located at the site and/or in a central station. Dedicated oxygen depletion alarms are frequently included as an integral part of devices such as anesthesia machines and ventilators.

Entry Terms : "Oxygen Depletion Alarms, Central Gas System" , "Central Gas System Alarms, Oxygen Depletion" , "Oxygen Depletion Alarms" , "Alarms, Oxygen Depletion"

UMDC code : 26592

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