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Oxygen therapy
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Oxygen therapy
with liquid oxygen
The main tank holds 32 litres of liquid oxygen (equivalent to 27,000 litres as a gas) at a very low temperature (-183ºC).
It is important to remember that if it is left unused, liquid oxygen will evaporate. It can be used to fill a portable flask (capacity of 1.2 litres of liquid oxygen), which is lightweight, small and holds enough oxygen for a few hours, depending on the prescribed flow rate.
How to use a liquid oxygen flask
Connect the tube on the nasal cannula or mask to the oxygen outlet on the flask.
Insert the nasal cannula or put on the mask.
Adjust the flow rate by turning the knob until reaching the value prescribed by the doctor.
How to fill a liquid oxygen flask
Make sure the flow rate knob is at zero.
Connect the flask to the tank by pressing down.
Pull down the lever on the flask and hold it there until you hear the alert sound due to the gas escaping, which indicates that the flask is full. The flask will take a minute to fill up.
You will know when it is full because a dense white vapour will come out of the bottom.
Once the flask is full, return the lever to the upright position. Remove the flask from the tank while pressing the release button on the tank.
If removing the flask is difficult, do not force it. Wait a few minutes and try again.
If any liquid oxygen is leaking, connect the flask to the tank again, wait a few minutes, then try separating the units again. If there is still a leak, connect them again and contact the technical team. If they cannot be connected, make sure the room is well-ventilated.
How long liquid oxygen tanks last
| Flow rate | How long the tank lasts (approx. number of days) | How long the flask lasts (approx. number of hours) |
|---|---|---|
| 0,5 l/min | 36,16 h | 25 h |
| 1 l/min | 18,06 h | 16 h |
| 1,5 l/min | 12,05 h | 10,70 h |
| 2 l/min | 9,04 h | 8 h |
| 2,5 l/min | 7,23 h | 6,40 h |
| 3 l/min | 6,03 h | 5,30 h |
| 4 l/min | 4,52 h | 4 h |
| 5 l/min | 3,62 h | 3,20 h |
The times calculated in this table may vary and are based on the following conditions: room temperature of 20°C, well-maintained equipment in good condition, normal evaporation rate (NER) within the limits indicated by the manufacturer, and proper filling in a fixed position without any movement. In any other conditions, the indicated data and results may vary.
OxiTEMPS
Calculate the autonomy of your oxygen bottle
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Oxygen therapy equipment and materials
Static oxygen concentrator
Portable oxygen concentrator
Oxygen resuscitation case
Management devices
Filters and accessories
Cleaning and disinfection
Other home respiratory therapies
