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2.3 Symbol Guide
The following symbols and safety labels are found on the Check O
2
Plus:
Authorized
representative
in the European
Community
On/off button
Do not throw
away. Follow
local guidelines for
disposal.
Mode button
Evaluated by ETL
(Intertek Testing
Laboratories)
Low battery
Manufacturer
Liter per
minute flow
Ingress protectionPounds per
square inch
Latex free
Kilopascals
Serial number
Percent
Catalog numberGas Sample
Inlet
Consult
accompanying
documents
Gas Sample
Outlet
Direct current
2.4 Component Description
3 1/2 Digit Display — The LCD provides direct readout of oxygen
concentration, gas flow and gas pressure. The LCD also displays
error codes as necessary.
ON/OFF Button — Turns the device on or off.
Mode Button — Switches between measuring the concentration
of gas produced by an oxygen concentrator and pure oxygen (for
calibration verification).
Low Battery Indicator — Indicates the voltage of the batteries is
below normal operating levels.
LPM — Illuminated next to the flow measurement. (not shown
when in calibration verification
kPA — Indicates the pressure measurement is in units of kilopascals.
PSI — Indicates the pressure measurement is in units of pounds
per square inch.
“%” symbol— Illuminated next tothe concentration measurements.
Gas Sample Inlet — Used to receive the gas sample.
Gas Sample Outlet — Used as an outlet for the gas sample and as
a trigger for pressure measurement when occluded.
Gas Sample Tubing — Used to connect to gas sample sources.
2.5 Included with Your Unit
• User Manual
• Gas Sample Tubing
• Soft Cover
6 1176119-A