The E cylinder on a crash cart contains 900 psig. How long would the cylinder last if used at 10 L/min?
a. 1 hour c. 3 hours 36 minutes
b. 25 minutes d. 4 hours 42 minutes
ANS: B
Amount of time left in cylinder = (cylinder pressure ? cylinder factor)/flow rate of gas (li-ters/minute). E factor = 0.28. Time to use 900 psig = (900 ? 0.28)/10 = 25 minutes.
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