Product Manual

4OperatingInstructions
4.1Oxygen,FlowandPressureMeasurement
Tocheckoxygenconcentration,flowandpressureofagassample
fromaconcentrator:
1.Connectthegassampletubingtothegassampleinletofthe
CheckO
2
Plus.
2.Attachtheotherendofthegassampletubingtotheoxygen
concentrator.
3.InitiatetheflowofgastotheCheckO
2
Plusatarateof
1-10litersperminute(2litersperminuteisrecommended).
Ensuretheconcentrator’soutputisstablepertheconcentrator
manufacturer’srecommendations.
4.TurnontheCheckO
2
Plus.
5.Allowtheoxygenreadingtostabilizeforapproximately10
secondsbeforereadingtheoxygenconcentrationandflow.
6.Tocheckpressure,coverthegassampleoutletwiththumbor
fingerwhilegasisflowing.
7.Wait5secondsforthedisplaytoreadpressure.
DONOTholdthemodebuttonwhilecheckinga
concentratororthereadingwillbeinaccurate.
4.2SwitchingPressureUnitsofMeasure
TheCheckO
2
PluscanmeasurepressureinPSIorkPa.TheCheck
O
2
PlusisfactorysettomeasureinPSI.ToswitchtokPa:
1.Usinga#1Phillipsscrewdriverloosenthebatterydoorscrew
andremovethebatterydoor.
2.Toggletheswitchinsidethebatterycompartment.
3.Replacethebatterydoorandtightenthebatterydoorscrew.
4.3CalibrationVerificationProcedure
Acalibrationverificationmodeisprovidedtoverifythatthe
CheckO
2
Plusisfunctioningproperly.Toperformthecalibration
verification:
1.TurnontheCheckO
2
Plus.
2.Connectasourceofpureoxygen(≥99.95%)tothegassample
inlet
3.Flow2–5LPMofgasintotheCheckO
2
Plus.Ensurethatthegas
flowingtotheCheckO
2
Plusisatastabletemperature.
4.Pressandholdthemodebutton.Whileholdingthemode
button,thegasmeasurementshouldreadbetween98.5and
101.5%oxygen.Ifthegasmeasurementisnotwithinthis
range,callCustomerService.Calibrationverificationmodeis
indicatedby“CAL”and“VER”flashingonscreenbeneaththe
gasmeasurement.
4.4FactorsInfluencingAccurateReadings
EffectsofTemperature
TheCheckO
2
Pluscompensatesfortemperatureandwillperform
withinspecificationsthroughouttheoperatingtemperature
range.However,takingmeasurementsduringrapidchangesingas
temperatureshouldbeavoided.
EffectsofHumidity
TheCheckO
2
Plushasahumiditysensortodetectandcompensate
forthehumidityofgasenteringthedevice.However,highlevels
(condensing)ofhumiditycanaffecttheaccuracyandreliabilityofthe
CheckO
2
Plus.Topreventpossibledamage:
•Avoidusageinenvironmentsofgreaterthan95%relativehumidity
•DONOTusethisdeviceinabreathingcircuit
•DONOTbreatheorblowintotheCheckO
2
Plus
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