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
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