How long will a size h oxygen cylinder last?

Answer 1

This will depend upon the gas flow rate. A size E oxygen cylinder in the UK contains 680 litres of compressed gas. At a flow of 10L/min for medical emergency use the cylinder will therefore last 68 mins. However if used at 6L/min it will last nearly 2 hours.

In the US we use PSIG (gauge level). at full a tank is about 2200 PSI on any given tank size, and the E cylinder has a tank factor of 0.28. So you take take the PSI and multiple it by by the tank factor and divide that number by the flow rate. So at full, 2200 x 0.28 = 616 and dvided that by the flow rate. The final number is the total number of minutes at the given flow rate. So at 2 liters per minute (2 lpm) a completely full E cylinder will last 308 minutes or 5.13 hours (divide total minutes by 60 to get hours). 140 minutes at 4lpm, and so on. You deffinetly want to call your oxygen supplier well before the guage gets to the red. With most guages the very start of the red line (the end farthest from empty) is around 500 PSI.

A good rule of thumb is to round down to the nearest whole hour when figuring duration. So when I've needed to I look at 5.16 hours and say 5 hours.

If you do run out or are into the red already, call 911 (or your local emergency service), all ambulances carry oxygen and better to have them arrive and use their O2 than to call your oxygen service because ambulance should be able to get their faster. Remember, at the very beginning of red (500 PSIG) a E cylinder will only last 140 divided by flow rate...so 70 minutes at 2lpm, 35 minutes at 4lpm, etc. Dont risk it, when in red, call 911 first, then your oxygen supplies...that is as long as you dont have any other cylinders to use.

common tank factors:

H Cylinder factor is 3.14

D cylinder factor is 0.16 (typical portable oxygen size)

* in the USA, all oxygen tanks, when completely full, are 2200 PSI, if you know the tank factor, you can easily compute the duration.

Calculating liquid oxygen is a whole nother ball of wax....

Answer 2

H size Cylinder holds 6900 liters @ 10 lpm =690 min or 11.5 hrs

@ 3 lpm = aprox 33 hrs

Know the lpm of your device & do the math
That really depends on how fast you use the oxygen, if you fully open the valve to air the cylinder will vent off (empty) within a couple minutes, if you just use a little at a time it could last for hours, days or even weeks.

Answer 3

There are many variables unknown to give an exact answer to the question. Such as: * The size of the cylinder * The oxygen delivery system. Nasal cannula, regular oxygen mask or high flow rebreather. * The oxygen flow or how many liters per minute are being administered to the patient.

Answer 4

An ML6 oxygen cylinder, when "charged" to normal pressures, holds 170 liters of oxygen. How long that will last depends on a number of factors.

If the flow is set to 2 liters per minute continuous then it will last less than 1 and 1/2 hours. If an oxygen conserving device is used (they give the gas in pluses when breaths are taken) it can last over 4 hours.

Answer 5

An Oxygen tank will only last as long as its flow rate or pulse dose rate. A m6 oxygen cylinder will last on continuous flow of 2.7 for one hour, and a pulse rate of 8.3 for one hour.

Answer 6

how long will an Ecylinder last if the guage is at 1200PSI and the patient is on 2 LPM

Answer 7

2lpm