PRO
2
check
®
Ultrasonic Oxygen Indicator
VERIFICATION & CALIBRATION INSTRUCTIONS
PURE OXYGEN VERIFICATION PROCEDURE
To quickly verify that the indicator unit is accurately measuring the
concentration of oxygen being produced by a concentrator, perform the
following steps:
1.
Connect the inlet port on the
PRO
2
check
®
unit to a USP oxygen
source (cylinder or liquid oxygen) via a supply tube.
2.
Turn the O
2
delivery flow to 2 LPM.
3.
Press the
“
on/off
”
button to turn unit on.
4.
When unit stabilizes the display will read -
"Concentrator O
2
91.8"
(approx. concentration.).
NOTE: When in the Concentrator Mode, the electronic components of the
PRO
2
check
®
indicator automatically compensate for the argon found in
the gas produced by an oxygen concentrator. As a result the display will
read 90% (± 2%) unless this function is over-ridden by pushing the
"pure O
2
/calibrate
" button).
5.
Press and continue to hold down the
“
pure O
2
/calibrate
”
button.
6.
Unit will display
“Pure O
2
”
and a numeric reading.
7.
If the unit is properly calibrated, the display should read between
99% and 101%
. The
PRO
2
check
is ready to use.
8.
If the unit display reads
"err, "---", "-U-"
or any other reading
other than 99.9 (± 2%), the unit should be recalibrated (See below).
QUICK “ONE STEP ” P URE OXYGEN CALIB RATIO N
The following procedure can be used to quickly and easily calibrate the
Ultrasonic Oxygen Concentrator Indicator
to pure oxygen:
1.
Follow steps 1 through 6 of "Pure Oxygen Verification Procedure"
above.
2.
When the unit displays
"Pure O
2
"
and a numeric reading, continue
holding down the
“
pure O
2
/calibrate
”
button.
3.
After a few seconds, the LCD display (while continuing to read
"Pure O
2
"
) will start to alternately display
"CAL"
and number.
4.
Continue to hold the
“
pure O
2
/calibrate
”
button down until
the display stops alternating and simply displays
“Pure O
2
100”
.
5.
At that point, the unit is calibrated to pure oxygen and ready for use.
NOTE: If unit displays an
O
2
concentration reading outside of the ± 2%
tolerance range (eg. < 98% or >102%) unit will not “Quick Cal” and the
Full Two Step procedure on the following page must be followed.
6
