Analytical Industries AII-2000 Palm O2 Oxygen Analyzer - Manual (Page 10)

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5.4.1 Flowing Gas Streams (Breathing Circuits, Concentrators)
1. Place the sensing area of the sensor into the gas stream
to be analyzed upstream of any humidification equipment.
2. Assure that the flow rate of the gas stream does not ex-
ceed ten (10) liters per minute. Exceeding ten (10) liters
per minute generates backpressure.
3. Check the gas stream and particularly the mechanical
connection for leaks that dilute the gas stream with ambi-
ent air.
4. Assure there are no restrictions in the circuit downstream
of the sensor that could generate backpressure on the
sensor.
5. Use the flow diverter supplied with the device along with
the optional tee adapter and position the sensor vertically
for optimum results, as shown right. The flow diverter
avoids stagnation and facilitates the movement of gas to
and from the sensing area of the sensor thereby produc-
ing a more accurate measurement of the gas stream to be
measured.
6. Install the tee-adapter in the breathing circuit.
7. Screw the flow diverter to the sensor.
8. Ensure the o-ring is lightly lubricated for ease of entry and
a tight seal between the flow diverter and tee adapter.
9. Insert the assembled flow diverter/sensor into the tee
allowing 100% oxygen (dry, non-humidified) to flow past
the sensor at a rate of 5-8 liters per minute.
10. Once the sensing area of the sensor is exposed to the gas
stream allow approximately sixty (60) seconds for the
reading to stabilize and observe the reading displayed by
the LCD.
5.4.2 Static Atmospheres (Incubators, Hoods, Oxygen Tents)
Expose the sensing area of the sensor to the atmosphere al-
lowing approximately sixty (60) seconds for the reading to
stabilize and observe the reading displayed by the LCD.
If placing the entire sensor inside the controlled atmos-
phere review Section 5.2
6 Maintenance
Review Section 3 Safety Warnings and Section 7 Troubleshooting for
guidelines on servicing the devices.
6.1 Serviceability
Do not open the main compartment of the analyzer, as it contains no service-
able parts inside. Never attempt to repair the analyzer or sensor by yourself as
you may damage the analyzer which could void the warranty.
6.1.2 Cleaning / Reuse Instructions
Clean the device, oxygen sensor and accessories with a soft cloth dampened
with either water or mild isopropyl alcohol solution (70% isopropyl alcohol
solution in water), if necessary, before re-use. Allow the components to air-dry
after cleaning.
Note: The Home Care Kit is not intended for patient use, it is intended solely
for confirming the O
2
concentration in Oxygen Concentrators. Accordingly, no
cleaning instructions apply.
6.2 Battery Replacement
The AII-2000 Palm O2 Oxygen Analyzer is powered by two
1.5V AA alkaline batteries with an approximate life of 13,000
hours.
A low battery indicator circuit monitors the battery supply
voltage and sends a signal directly to the LCD when the bat-
tery voltage reaches a preset level that activates the battery
symbol in the LCD.
The batteries are located the top or front of the analyzer and secured by termi-
nals mounted directly on the PCB Assembly.