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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 con-
centration 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)
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%)
(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
(Fig. 5.1)
Red Indicator Green Indicator