Co2meter RAD-0102SX2 Calibration Procedure



Calibr a tionPr ocedure:RADCO2Saf etyAlarms

Thisisamoredetailedexplanationofthecalibrationprocedurefoundinthe

manual.Checkyourstateorlocalcodeforcalibrationschedulerequirements.

Ataminimum,youshouldcalibrateatleastonceayear.

Thereare2differentcalibrationproceduresdependingonthealtitudeatwhich

thedeviceisto

beused:

1. 0‐3,000ft.(900m):PerformZeroCalibrationandSpanCalibration. 

2. 3,000+ft.:PerformZeroCalibrationonly. 



BeforeYouBegin

1. ForZeroCalibration,youwillneedagascylinderofpurenitrogen(0ppm

CO2).ForSpanCalibration,youwillneeda2

cylinderof4%CO2.

2. Temporarilycoverthebuzzerholeintheupperright‐handcornerofthe

SEU(sensorunit)andRDU(remotedisplayunit)witha smallpieceof

maskingtapetominimizethealarmsoundduringcalibrat ion.

3. Ifcalibrationistobeperformedin‐situ,first

informbuildingoccupantsthat

youwillbetestingtheCO2alarmforseveralminutes.

4. AttachincludedtubingbetweenthegascylindersandtheSEUcalibration

portasfollows:

a. RAD‐0102SX2–Connectthetubingtothesuppliedplugandsecureit

overtheairentry/calibrationporton

thefrontoftheSEU.

b. RAD‐0102/RAD‐0200–Connectthetubingtothecalibrationporton

thebottomoftheSEU.



A:RAD‐0102SX2 B:RAD‐0102/RAD‐0200



2



ZeroCalibration 



1. Attachtubingbetweenthenitr ogen(0ppmCO2)gas

cylinderandthecalibrationport.

2. Turnonthegasregulator.Flowrateshouldbe

between0.15‐0.3litersperminute.

3. WaituntiltheCO2readingontheSEUsettles

consistentlyatorne ar0ppmCO2onthescreen.

PresstheModebuttonuntilthe“CALI”iconflashes.

5. PressEntertoenterthe“Zero”calibrationmode.The“CALI”iconand

“ZEro”shouldbedisplayedonthescreen.

6. PressandholdtheModebuttonforatleast10secondsuntil“Calibrating”

and“CO2”areflashingsimultaneously.

7. Zerocalibration

willbegin.Afterapproximately5minutes,theLCDwill

displayeither“PASS”or“FAIL”.IftheLCDreads“FAIL”,repeatthesteps

again.

8. PressEnter.Thedisplayshouldnowshow0ppm.Removethenitrogen

cylinder.





3



SpanCalibration 

Warning:Youmustbeinawell‐ventilatedareabeforestartingSpanCalibration.

Breathing4%CO2gasinanenclosedareacanresultindizziness,shortnessof

breath,orunconsciousness.

Devicecannotbespancalibratedabove3,000ft.(900m)altitude.



1. Attachtubingbetweenthe4%CO2gascylinderand

the

calibrationport.

2. Turnonthegasregulator.Flowrateshouldbebetween

0.15‐0.3litersperminute.

3. WaituntiltheCO2readingontheSEUsettles

consistentlyatorne ar4%CO2onthescreen.

4. BothAlarm1andAlarm2willsound.

5. PresstheMode

buttonuntilthe“CALI” iconflashes.

6. PressEnter2timestoenterthe“SPAn”calibrationmode.The“CALI”iconand

“SPAn”shouldbedisplayedonthescreen.

7. PressandholdtheModebuttonforatleast10secondsuntil“Calibrating”and

“CO2”areflashingsimultaneously.

8. Spancalibration

willbegin.Afterapproximately5minutes,theLCDwilldisplay

either“PASS”or“FAIL”.IftheLCDreads“FAIL”,repeattheste psagain.

9. PressEntertocompletecalibration.RemovetheCO2cylinder.

10. Toresetthealarm,youmustdisconnecttheSEUfromthepowersource.Wait

afewseconds,

thenplugitbackinagain.



Ifyourunitfailseither“ZEro”or“SPAn”calibration,please

followtheprocedureagainbeforecallingsupport.

Co2meter RAD-0102SX2 Calibration Procedure

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