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  • Testers designed to assess the performance of the outlets in a medical gas system; they can measure, evaluate, display, and/or record a set of gas output characteristics. These testers usually measure the static pressure with the flow valve closed and the dynamic pressure with a preestablished test flow (e.g., 100 liters per minute), known as the dynamic pressure; they can also determine the gas type (e.g., medical air, oxygen, nitrogen, nitrous oxide) by measuring the gas concentration and comparing it to a set of internal values. Medical gas outlet testers include manometers, a gas analyzer, electronic circuitry, a display, and recording capabilities; they are used to check medical gas systems after construction, modification, or major repair.
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