5. 5. OCSI (
oxygen concentration status
indication module)
function
5.5.1. Operating principle
The oxygen monitor (Item 2 Fig 2.1) is an
electronic module capable of checking the
effective oxygen concentration supplied by
the concentrator.
The oxygen monitor measures the concentra
-
tion and activates an audible and visual alarm
if it falls below the alarm set point percentage.
(Refer to Section 5.4 for information on the
operation of the indicators and alarms for the
OCSI function)
(Values at 21
o
C and at one atmosphere pressure).
Maximum flow: 5 lpm.
The variation of the maximum flow does not
exceed ± 10 % of the indicated value when a
back pressure of 7 kPa (1 psig) is applied to
the output of the device. The maximum outlet
pressure is 50 kPa (7 psig).
5.5.4 Maintenance of the Device Alarms
No special maintenance is required. The alarm
set-point is factory set and the setting cannot be
adjusted. All models are set at 84%.
The equipment supplier verifies that the device
is still operating correctly when the routine
checks are performed.
5.6. Technical characteristics
Dimensions:
LxWxH: 36 x 23 x 58.5 cm (14 x 9 x 23 in.)
Caster diameter: 3.8 cm (1.5 in.).
Weight: 14.5 kg. (32 lbs) varies by model.
Noise level conforms to ISO 8359 Standards.
Oxygen Concentration - USP93%
• at 2 l/min: >90%.
• at 5 l/min: 90%. (+6.5%/-3%)
(Fig. 5.1)
Red Indicator Green Indicator
