Function check 43
12.2 Check filling
Open the oxygen supply valve slowly. You can now
read off cylinder pressure at the pressure gauge of
the pressure reducer. A display of 200 bar, for
example, means that the cylinder is full, whilst at 100
bar, it is still half full.
You should ensure that you have a refill or reserve
cylinder ready to guarantee the operational readiness
of the device – for example, if the pressure gauge
displays 50 bar or less.
Calculating filling level
Oxygen volume = cylinder volume x cylinder
pressure.
Calculating operating time for oxygen
inhalation
Example:
O
2
reserve = 1000 l; setting for O
2
inhalation 6 l/min:
Calculating operating time for aspiration
Example:
O
2
reserve = 1000 l; consumption for aspiration 17 l/
min (max.):
Cylinder volume x cylinder pressure = oxygen reserve
Example 1
10 l x 200 bar = 2000 l
Example 2
2 l x 100 bar = 200 l
Operating time for inhalation (min) =
1000 l
6 l/min
= 166 min = 2 h 46 min
Operating time for aspiration (min) =
1000 l
17 l/min
= 58 min
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