PRO
2
check
®
Ultrasonic Oxygen Indicator
2
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
