Weinmann MEDUMAT Standard - Calculation of oxygen content;remaining operating time

Using the ventilator 31
EN
: 120 Seconds
The optical alarm will continue to flash.
If the cause of the alarm is not eliminated, the acous-
tic alarm will start to sound again after a short inter-
val. Both the optical and the acoustic alarm are
cancelled automatically as soon as the cause is elim-
inated.
5.10 Calculation of oxygen content/remaining
operating time
Oxygen content of cylinder
Oxygen volume = Volume of cylinder x Cylinder pressure..
Real ventilation time
Example 1:
O
2
-content = 1000 l; MV = 11 l/min; 100% O
2
(No Air Mix).
This gives the following equation:
The real ventilation time is prolonged when MEDUMAT Standard is switched to
Air
Mix.
Cylinder volume x Cylinder pressure = Oxygen content
Example 1
10 l x 200 bar = 2000 l
Example 2
10 l x 100 bar = 1000 l
Real ventilation time(min)
oxygen content (l)
MV (l/min)
----------------------------------------------
100
O
2
-concentration()
--------------------------------------------------¥=
x
Real ventilation time(min)
1000l
11l/min
---------------------
100
100%
----------------¥91min 1h31min===
x