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
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
Respond
O
2
™
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
5. Turn on the 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
Ultrasonic Oxygen Indicator
INSTRUCTIONS FOR SPOT CHECKING
LIQUID OXYGEN VESSELS or OXYGEN CYLINDERS
The
Respond
O
2
™
Ultrasonic Oxygen Indicator
can also be used to
perform spot checks (± 2%) of gaseous or liquid oxygen as follows:
1. Connect the inlet port on the
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 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
2
/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:
Respond
O
2
™
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
Ultrasonic Oxygen Indicator
