PRO
2
check
®
Ultrasonic Oxygen Indicator
FULL "TWO STEP" CALIBRATION PROCEDURE
The following procedure may be used to calibrate the
PRO
2
check
®
indicator
to both room air and U.S.P. oxygen (> 99.0%):
1.
Clear analyzer gas chamber by
inhaling
through inlet. Use clean tubing and
discard after use.
2.
With analyzer off, Push and Hold
Calibration/Pure O
2
button while turning on power.
3.
When three dashed lines appear (---) release
Calibration/Pure O
2
button. Display
should read
Cal Air
(Cal Air).
NOTE: Do not exhale breath into unit. Moisture will affect calibration; a slight suction
can be used to evacuate the sampling chamber.
4.
Press and release
Calibration/Pure O
2
button. You will see three dashed lines (---)
scroll in circles. Then the scrolling will stop and you will see
CAL O
2
5.
Connect to
O
2
Cylinder at 2 LPM, then press and release
Calibration/Pure O
2
button.
6.
You will see three dashed lines (---) scroll in circles. Then the scrolling will stop and
then you will see
Cal End
and read 91.7
Note: Reading may range from 91 to 92.
This is not a concern.
7.
Push the
Calibration/Pure O
2
button. You should get a reading between 99% and 101%.
8.
Unit is calibrated and ready for use.
9.
If step 7 above is not achieved, try one more time. If 99% to 101% is still not achieved,
call Salter Labs
®
Customer Service to send unit back for service by a Technician at
Salter Labs
®
Service Dept.
NOTE: If unit displays "CAL ERR" during verification or calibration
procedures, check to ensure that you are using U.S.P. oxygen (> 99.0%) and
that the flow is turned on to at least 2 LPM, then repeat procedure.
NOTE: If unit displays "---" during verification or calibration procedures, release
the
"pure O2/calibrate
”
button or the unit will shut off automatically.
If any problems are encountered during the calibration sequences,
contact Salter Labs at 1-800-421-0024 or 1-661-854-3166.
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