PRO
2
check
®
Ultrasonic Oxygen Indicator
INSTRUCTIONS FOR CHECKING O
2
CONCENTRATORS
To turn unit on and off:
To turn the unit on or off press and release the
“
on/off
”
button on the lower left-hand side of the unit. (EXAMPLE:
Concentrator O
2
20.9) When the unit is turned on the device defaults to the
mode in which the software enables the unit to measure the output of an
oxygen concentrator compensating for the argon that passes through the
sieve beds. The display will read
"PRO"
, then
"O
2
"
and finally
"Concentrator O2"
and a number. If the
PRO
2
check
®
unit is hooked up
to an operating concentrator, the device will automatically measure the
concentration of the oxygen being produced and show the value on the
LCD display. The unit's default operating mode automatically compensates
for the argon that passes through the sieve beds, it will display a false
reading (
approximately 90%
) if connected to an oxygen source other than
a concentrator unless the specific actions discussed on
pages 6 - 7
of this
manual are taken. If the device is not hooked up to an oxygen source it will
measure and display the concentration of oxygen in the ambient air
(
usually 20.9%
).
Reading may vary if sample gas remains in unit
.
To turn the
PRO
2
check
®
device off, press and release the
“
on/off
”
button. The unit will display
“OFF”
and shut down. To conserve battery
life, it automatically shuts down if any one of the unit's functions is not
utilized for approximately 5 minutes.
Measuring Oxygen Concentrations:
Follow the steps below to measure the concentration of oxygen being
supplied by an oxygen concentrator:
1.
Make sure the concentrator has been running long enough (follow
concentrator manufacturer's guidelines) to reach full operational output.
2.
Make sure flow rate is above 2 LPM - preferably at the concentrator's
highest output.
3.
Remove any humidifier from concentrator
.
4.
Connect supply tubing to the concentrator oxygen outlet and the inlet
port on the
PRO
2
check
®
.
5.
Turn on the
PRO
2
check
®
device (See above).
6.
The indicator will stabilize in about 10 seconds and provide an
accurate reading on the LCD display.
7.
If there is any question to the accuracy of the reading, perform the
"Pure Oxygen Verification Procedure" and if necessary the “Quick
One Step Pure Oxygen Calibration Procedure on
page 6
.
CAUTION: Do not check concentrator with humidifier in place.
Humidity can affect unit's readings and damage the unit.
NOTES: Never check a concentrator while holding down the "pure O
2
/calibrate"
button.
You will get a false reading. You must hold down the
"pure O
2
/calibrate"
button to
check unit against a source of U.S.P. oxygen (> 99.0%) cylinder or liquid oxygen.
4
