2
check
®
Ultrasonic Oxygen Indicator
INSTRUCTIONS FOR SPOT CHECKING
LIQUID OXYGEN VESSELS or OXYGEN CYLINDERS
Although the PRO
2
check
®
Ultrasonic Oxygen Indicator is designed, as its
name implies, to check the various functions of an oxygen concentrator, it
can also be used to perform spot checks (± 2%) of gaseous or liquid
oxygen.
To utilize the PRO
2
check
®
device for this purpose follow this procedure:
1.
Connect the inlet port on the PRO
2
check
®
unit to a gaseous or
liquid
oxygen source (cylinder or liquid oxygen) via a supply tube.
2.
Turn the oxygen flow on to 2 LPM.
3.
Press the “on/off” button to turn the PRO
2
check
®
unit on.
4.
When unit stabilizes the unit display will read "Concentrator O
2
91.8" (approx concentration.)
5.
Press and continue to hold down the “pure O /calibrate” button.
6.
Unit will display "Pure O2" and a numeric reading.
7.
If the source gas is oxygen, the display should read between 99%
and 101%.
8.
If the unit display reads "err", "---", "-U-" or any other reading
other than 99.9 (± 2%), the source gas may not be pure oxygen and
should be quarantined for retesting using a more sophisticated method
such as a Servomex* oxygen analyzer.
NOTE: PRO
2
check
®
Ultrasonic Oxygen Indicator can be used to spot
check
the identity and purity of gaseous or liquid oxygen only, it cannot be
used to
perform or verify U.S.P. oxygen (> 99.0%) testing since it cannot
provide
the required U.S.P. oxygen (> 99.0%) accuracy of ± 0.1%.
* Servomex Inc. - Sugarland, TX
5
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