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Ⅸ. PRODUCT FEATURES
◆ Accumulative timing function: The total working time of the oxygen concentrator is displayed on
the display screen.
◆ Single-time timing function: The single-time working time is displayed on the display screen,
understand the running time of the equipment better.
◆ Power failure alarm function: Continuous buzz to remind users.
◆ The compressor is equipped with an over-pressure safety valve and a heat suppressor to ensure the
safety of the compressor and the whole device better.
◆ Timing function: Max 8h (Interval time 10min adjustable).
◆ Voice function: There is a voice each time when pressing the function buttons.
◆ Real-time oxygen purity monitoring function: Can help to monitor oxygen purity better and
understand the use condition of patients: oxygen purity ≥82%, only the green light of the operation
indicator is on; 50%≤oxygen purity <82%, yellow light is on; oxygen purity <50%, the red light is on
(display E4), and 3 sound instructions are issued, the device does not stop.
◆ Fault detection function (including compressor fault, low oxygen purity fault detection). The display
shows the fault code (E1, E2, E4).
Main technical indicators of oxygen concentrator
Under the maximum recommended flow rate, apply a back pressure of 7kPa, and the flow rate change
should be within the range of 5L/min±10%.
When the oxygen flow is 0.5~5L/min, the oxygen purity is ≥90% (V/V) (reach the specified purity level
within 30 minutes of the initial start).
Maximum recommended
oxygen flow:
The flow rate when the
nominal outlet pressure is
0-7kPa：
When the nominal outlet
pressure is zero, the function
graph of oxygen purity and
oxygen flow (see the figure at
right):
5L/min
0.5~5L/min
04
Oxygen flow: L/min
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