Co2meter TIM-12 User manual

1

OPERATIONMANUAL
DesktopCO2,Temperature&
RelativeHumidityMonitor 
TIM‐12



INTRODUCTION
ThankyouforpurchasingtheTIM12desktop
CO2monitor.Itmeasurescarbondioxidelevels,
airtemperatureandhumidity.Thismakesit
idealforindoorairquality(IAQ)diagnosisand
HVACsystemperformanceverification.

Poorindoorairqualityisconsideredunhealthy.
Itcanleadtodrowsiness,inabilityto
concentrate,andevenillness.

IAQmonitoringofCO2levelsiswidelyusedin
publicareassuchasoffices,classrooms,
factories,hospitalsandhotels.Itisalso
recommendedforindustrialhygieneinsome
countries.(Seeappendix).
ProductFeatures:
●LargedisplayshowsCO2level,temperature,
  humidity,dateandtime
●15degreetiltanglemakesthedisplayeasy
toseeandread
●Indoorairqualitylevelindication:
  Good,Normal,andPoor
●StableNDIRsensorforCO2detection
●VisibleandaudibleCO2warningalarm
●ABC(AutomaticBaselineCalibration)
  ormanualCO2calibration
●MaximumorminimumCO2levelrecall
●Samplingratefrom1sec.to4:59:59.

MATERIALSSUPPLIED
Thispackagecontains:
●Meter
●PowerSupply(5V+/‐10%,>=0.5A)
●USBcableandsoftwareCO
●Manual
POWERSUPPLY
ThemeterispoweredbyanACadaptor
(5V/0.5Aoutput).

LCDDISPLAY







Symbols
ppmCO2levelinparts‐per‐million
GOODCO2isingoodlevel
NORMALCO2isinnormallevel
POORCO2isinpoorlevel
AirTemp.Airtemperature
Humidity%Unitofairrelativehumidity
oE(C/F)Celsius/Fahrenheitoftemp.
MAX/MINMaximum/Minimumreadings
CO2alarmicon

NOTE: 
TWA/STEL/VENT.R/arevainiconsonthis
model.


KEYPAD
SET‐Entersetupmode
‐Saveandfinishsettings
ESC‐Exitsetuppage/mode
‐Terminatecalibration/datalogging
RESET‐ClearMAX/MINvalues
LOG▲‐Selectmode,increasevalueatsetup
‐Startdatalogging
MIN/MAX▼ ‐ActivateMAX,MINfunction
‐Selectmodeordecreasevalue
duringsetup
SET+▲+MIN/MAX▼ ‐CO2calibrationmode

OPERATION
POWERON/OFF
Plugthewalladaptorintoanappropriate
receptacle.Themeterwillturnonautomatically
afterashortbeep.ThelitLEDindicatesfull
power.Ifthevoltageistoohighorlow,“bAt”
willdisplayontheLCDandtheLEDwillflash.
Seepage14fortroubleshooting.

Duringnormaloperation,theLCDwilldisplay
thecurrentCO2levelinppm,airqualitylevel,
airtemperature,humidity,andthecurrentdate
andtime(Fig.1).






TAKINGMEASUREMENTS
Themeterstartstakingmeasurements
immediatelyafteritisturnedonandupdates
thereadingseverysecond.Intheeventthe
operatingenvironmentisquicklychanged(for
example,fromhightolowtemperature),itwill
takeapproximately2minutesfortheCO2and
temperaturetoadjustand10minutesfor
humiditytostabilize.
NOTE:Donotholdthemeterclosetoyourface
asyourbreathwillaffecttheCO2level.

MIN/MAX
Whilethemeterispoweredon,pressthe
“MIN/MAX▼“buttontoseetheminimumand
maximumCO2level,temperature,and
humidityinturn.Eachpressof“MIN/MAX“will
displaytheMINandMAXvaluesinorder,then
returnthemetertonormalmode(Fig.2).

Duringnormaloperationorwhileviewing
MIN/MAXlevels,pressandholdthe
“RESET“keyformorethan1secondtoclearthe
storedminimumandmaximumvalues.









INTERNALDATALOGGING
Press“LOG▲”for2secondsundernormalmode
tostartlogging.ThegreenLEDblinkstoindicate
theloggingstatusandtheLCDshowsthereal
timeCO2valueand“rEC”.Lowerdisplaysare
therealtimetemperature,humidityandclock.

Toterminatedatalogging,press“ESC”for2
seconds,TheLEDlightwillstopblinkingandthe
displaywillshow“End”andCO2reading
interchangeably.Holddown“ESC”for2
secondsagain,anditwillreturntonormal
measurementmode. 

ThemetercansaveCO2,temperatureand
humiditylevelsovertimeininternalmemory.
Thememorycapacityis15,999points.The
samplingratecanbefrom1secondto4hours
59minutesand59seconds(SeeSETUP).
MinimumandMaximumrecallisstillavailable
duringlogging.





HIGHCO2ALARM

2

ALARM
Themeterfeaturesanaudiblealarmthatwarns
theuserwhentheCO2concentrationexceeds
theprogrammedlimit.Userscanset2limits:a
CO2levelthatrequiresventilation(SeeP1.3in
setupforsettingalarmlimits)andalowerCO2
levelwhenventilationisnolongerrequired
(SeeP1.2insetupCO2normallimit).

Duringhighalarm,themeteremitsan80dB
beepanddisplaysthefaniconontheLCD.The
alarmcanbetemporarilystoppedbypressing
anybutton,oritwillautomaticallystopwhen
theCO2levelfallsbelowthelowerlimit. 

Ifthealarmistemporarilysilenced,itwill
resumeiftheCO2levelfallbelowthelower
limitthenrisesabovetheupperlimitagain,orif
the“RESET“buttonispressedtore‐activatethe
alarm.

Thefaniconremainsflashingevenifthebeeps
aresilenced.Theicononlystopsflashingwhen
theCO2levelfallbelowthelowerlimit(Fig.3)








SETUP
Thereare5setupmodes:P1‐CO2alarmlevels,
P2‐temperature(CorF),P3‐date/time,P4‐
factoryresetandP5‐Logging.Whenyoupress
“SET”thesetupmodewillbeshowninthe
lowerrightcornerofthescreen.

Toentersetup,whileinnormalmode,hold
downthe“SET“buttonfor3seconds.Toexit
setup,press“ESC“whileP1.0,P2.0,P3.0,P4.0or
P5.0isdisplayed.

P1.1SETCO2GOODLEVEL
Press“SET“todisplayP1.0and”CO2”(Fig.4)on
theLCD.Press“SET“againtosettheCO2GOOD
level.Thecurrentsetvaluewillbeblinkingon
LCD(Fig.5).










Press“▲“toincreaseor“MIN/MAX▼“to
decreasethevalue.TheGOODalarmrangeis
from0to700ppmin100ppmincrements.
OncethepreferredCO2levelisselected,
press”SET“tocontinueontoP1.2tosetthe
NORMALlevel(Fig.6)orpress“ESC“toreturn
toP1.0withoutsavingchanges.

P1.2SETCO2NORMALLEVEL
P1.2istheupperlimitoftheCO2NORMAL
level.ThecurrentvaluewillflashontheLCD
(Fig.6).Press“▲“toincreaseor“MIN/MAX▼”
todecreasethevalue.TheNORMALlevelcan
besetbetween700and1,000ppm.Oncethe
preferredvalueisselected,press”SET“tosave
P1.2andcontinueontosettheP1.3POOR+
ALARMthresholdsetting(Fig.7)orpress
“ESC“toreturntoP1.0withoutsavingchanges.

P1.3SETCO2POORLEVEL+ALARM
P1.3isusedtosettheCO2alarmthreshold.The
currentsetvaluewillblinkontheLCD(Fig.7).
Press“▲“toincreaseor“MIN/MAX▼“to
decreasethevalue.ThePOORlevelcanbeset
between1,000to5,000ppm.Press“SET“to
confirmP1.3andcontinuetoP1.4(Fig.8)or
press“ESC“withoutsavingtoreturntoP1.0








P1.4SETALARMON/OFF
P1.4isusedtosetalarmonandoff.When
enteringP1.4,thedefault“On“willbeblinking
ontheLCD(Fig.8). 

Press“▲“or“MIN/MAX▼“toswitchthealarm
to“Off“.Thenpress“SET“toconfirmP1.4and
returntoP1.0(Fig.4)orpress“ESC“toreturnto
P1.0withoutsaving.

CAUTION:
AlthoughtheTIM12alarmcanbesetupto
5,000ppm,theaccuracyoftheCO2readingis
onlyspecifiedupto2,000ppm.Alarmvalues
higherthan2,000ppmareforreferenceonly
andshouldnotbeusedforpersonalsafety.

P2.0SETTEMPERATUREUNITS
Holddownthe“SET”buttonforatleast3
secondstoentersetupmode,thenpress“▲“in
P1.0modetoaccessP2.0tosetthetemperature
scale(Fig.9).Press“SET“againtoshow
temperatureinoCoroFonthedisplay(Fig.10).
Press“▲“or“MIN/MAX▼“tochangeunits,
thenpress“SET“tosaveor“ESC”toexit
withoutsavingandreturntoP2.0







P3.0SETREALTIMECLOCK
TheTIM10candisplaytimeineither24houror
12hour(am/pm)format.Holddownthe“SET”
buttonforatleast3secondstoentersetup
mode,thenpress“▲“twicetoaccesstheP3.0
real‐timeclock(rtc)setup(Fig.11).

Tostart,press“SET“todisplayP3.1with“rtc”
andtheblinkingyeardigits(Fig.12)inthelower
leftcornerofthedisplay.Tochangetheyear,
press“▲“or“MIN/MAX▼“tochangethevalue,
thenpress“SET“tosavetheyearandcontinue,
orpress“ESC“toexitwithoutsaving. 







Continuetopress“SET“tochangetothe
month,andthentheday.Afteryoupress“SET”,
press“▲“or“MIN/MAX▼”whiletheyear,
monthordayvaluesareflashingtosetthe
correctdate.Press“SET“tosaveandmove
forwardtosetthetime,orpress“ESC“to
returntoP3.0modewithoutsaving.

Tosettheclock,inP3.4modewiththehours
flashing,press“▲“or“MIN/MAX▼“tochange
from12to24hourtimeformat(Fig11).Press
“SET“tosaveandmoveforwardtoP3.5mode
tosetthetime,orpress“ESC“toreturntoP3.0
modewithoutsaving.







WhileinP3.5mode,thecurrenthoursetting
willblink(Fig.14).Tochangethesetting,
press“▲“or“MIN/MAX▼“toadjustthetime.
Press“SET“tosavethesettingorpress“ESC
“toreturntoP3.0.modewithoutsaving.

P4.0RESET
Holddownthe“SET”buttonforatleast3
secondstoentersetupmode,thenpress“▲“3
timestoaccessP4.0modetorevertthemeter
tothefactorydefaultstate(Fig.15).
Press“SET“togotoP4.1mode.“No”willbe

3

blinkingonthedisplay(Fig.16).Press“▲”
or”MIN/MAX▼”tochangeto“Yes”,thenpress
“SET“tosavethesetting.Press“ESC”toreturn
toP4.0Cwithoutsaving.







Ifyouchoose“Yes”,themeterisresettothe
followingfactorydefaults:






P5.0SETSAMPLINGRATE
GointoP5.0tosetthedataloggingsampling
rate(Fig.17).Therangeisfrom1secondto4
hours59minutesand59seconds. 

Press“SET”toseeP5.1blinkinghourdigitson
thelowerleftdisplay.Tochangethedigit,press
“▲“or“MIN/MAX▼“toadjustthehour
samplingrate.Press“SET“tosavethesetting. 

Afterthehoursareset,youwillseeP5.2and
theminutesdigitswillflash.Tochangethe
digits,press“▲“or“MIN/MAX▼“Press“SET“to
savethesettingandgotoP5.3.

Aftertheminutesareset,youwillseeP5.3and
thesecondsdigitswillflash(Fig.18).Tochange
thedigits,press“▲“or“MIN/MAX▼“Press
“SET“tosavethesettingandreturntoP5.0.

Press“ESC“atanytimetoexitwithoutsaving
yourlastchangesandreturntoP5.0.


CO2CALIBRATION
Themeteriscalibratedat400ppm(parts‐per‐
million)CO2concentrationatthefactory.400
ppmiscomparabletofreshoutdoorair. 
Thereare2typesofcalibrationavailable:ABC
(AutomaticBaselineCalibration)ormanual
calibration.Oneortheothershouldbeused
regularlytomaintaingoodaccuracy.


Note:
IfTIM10accuracybecomesaconcernafterlong
useorotherspecialconditions,returnthe
metertothedealerforcalibration.

CAUTION:
Donotcalibratethemeterwithairorbottled
gasthatcontainsanunknownCO2level.The
meterwillassumeitis400ppmCO2andwill
giveinaccuratemeasurements.

ABCCalibration
ABC(AutomaticBaselineCalibration)is
designedtoeliminatethezerodriftovertimeof
theinfraredCO2sensor.TheABCfunctionis
enabledbydefaultfromthefactory.

ForABCtoworkproperly,themetermust
continuouslymonitorCO2levelsforatleast7.5
days(poweron).Duringthattime,itwillrecord
thelowestCO2levelandsetthatasthe400
ppmbaselineforfuturereadings.Therefore,it
iscriticalwhenusingABCcalibrationthatthe
meterbeexposedtofreshairatleastonce
every7.5days.Ifthisisnotpossible,then
manualcalibrationisrecommended.

ManualCalibration
Manualcalibrationrequiresfresh,dryoutdoor
airwhenCO2levelsareapproximately400
ppm.Donotcalibrateduringrainydays.High
humiditywillaffecttheCO2levelsinair. 

Duringmanualcalibration,avoidplacingthe
meterinareascrowdedwithpeopleorcloseto
structuresthatmightgiveoffCO2likeair
ventilationpipes,chimneys,orautomobiles.

Tomanuallycalibratethemeter,placeit
outdoors,andturnitonforatleast2minutes.
Thenholddown“SET“,"▲"and“MIN/MAX▼”
simultaneouslymorethan1secondtoenter
CO2calibrationmode.400ppmand“CO2”will
blinkduringcalibration.






Waitabout30minutesuntiltheblinkingstops.
Calibrationiscompletedautomatically.Tostop
manualcalibration,press“RESET“foratleast1
second.

Note:
Keepthemeterawayfromanyanimals,
humansorplantswhichmightaffecttheCO2
concentrationnearbyduringthecalibration.

RHCALIBRATION
ThishumidityaccuracyofthisdesktopCO2
meterissetatthefactory,andcannotbere‐
calibrated.


TROUBLESHOOTING
Cannotpoweron
Checkwhethertheadaptorhaspowerand
thatthemeterisfirmlypluggedin.
Slowresponse
Checkthattheairflowchannelson
therearofthemeterarenotblocked.
Nochangeinreadings
Checkwhetherthemeterisinmaximum
orminimummode.Resetfactorydefaults.
"BAt”andgreenLEDkeepflashing
Theadaptoroutputvoltageistoohighor
toolow.Usethesuppliedadaptorwith 
correct5V(+10%)>=0.5Aratings.

ErrorCodes






















SPECIFICATIONS












SUPPORT&WARRANTY



4

Support
Thequickestwaytoobtaintechnicalsupportis
viaemail.Pleasesendallsupportenquiresto
[e-mail].Inyouremail,please
includeaclear,concisedefinitionofthe
problemandanyrelevanttroubleshooting
informationorstepstakensofar,sowecan
duplicatetheproblemandquicklyrespondto
yourinquiry.

Warranty
Thisunitcomeswitha1YEAR(warrantyperiod)
limitedmanufacturer’swarranty,startingfrom
thedatetheunitwasshippedtothebuyer.
Duringthisperiodoftime,CO2Meter.com
warrantsourproductstobefreefromdefects
inmaterialsandworkmanshipwhenusedfor
theirintendedpurposeandagreestofixor
replace(atourdiscretion)anypartorproduct
thatfailsundernormaluse. 
Totakeadvantageofthiswarranty,theproduct
mustbereturnedtoCO2Meter.comatyour
expense.If,afterexamination,wedetermine
theproductisdefective,wewillrepairor
replaceitatnoadditionalcosttoyou.

Thiswarrantydoesnotcoveranyproductsthat
havebeensubjectedtomisuse,neglect,
accident,modificationsorrepairsbyyouorbya
thirdparty.Noemployeeorresellerof
CO2Meter.com’sproductsmayalterthis
warrantyverballyorinwriting.

Returns
Iftheproductfailsundernormaluseduringthe
warrantyperiod,anRMA(ReturnMaterial
Authorization)numbermustbeobtainedfrom
CO2Meter.com.Aftertheitemisreceived,
CO2Meter.comwillrepairorreplacetheitemat
ourdiscretion.

ToobtainanRMAnumber,pleasecall
CO2Meter.comat(877)678‐4259TollFreeor
(386)310‐4933.WhenrequestinganRMA
number,pleaseprovidethereasonforreturn
andoriginalordernumber.

Ifwedeterminethattheproductfaileddueto
improperuse(waterdamage,dropping,
tampering,electricaldamageetc.)orabuse,or
ifitisbeyondthewarrantyperiod,wewill
informyouofthecosttofixorreplaceyour
device.

Ifyouarereturningyourdeviceduetoa
warrantyclaim(withanRMAnumber)andyou
stillhavetheunitoriginalpackage,pleaseuseit
toshipyourunittous.Pleasemakesureto
includetheprovidedRMAnumberonthe
outsideofthebox,preferablyontheshipping
label.Makesureyousecuretheunitinsidethe
packageproperlytopreventanydamageduring
transitthatcouldvoidyourdevice’swarranty.
Finally,pleaseshipyourdevicetotheaddress
shownunderthe“ContactUs”sectionbelow.
CO2Meterwillnot,underanycircumstances,be
responsibleforyourshipmentexpensesandno
refundwillbeissuedforshippingcharges
necessaryforyoutoshiptheunittous.




Liability
Allliabilitiesunderthisagreementshallbe
limitedtotheactualcostoftheproductpaidto
CO2Meter.com.Innoeventshallwebeliable
foranyincidentalorconsequentialdamages,
lostprofits,lossoftime,lostsalesorlossor
damagetodata,injurytopersonorpersonal
propertyoranyotherindirectdamagesasthe
resultofuseofourproducts.

Contactus:We’reheretohelp!
Ifthetroubleshootingguideabovedoesn’thelp
yousolvingyourproblemorformore
information,pleasecontactususingthe
informationbelow.

[e-mail]
(386)256‐4910TechnicalSupport
(386)872‐7665Sales 
Monday‐Friday9:00am‐6:00pmEST

CO2Meter,Inc. 
131BusinessCenterDrive
OrmondBeach,FL32174USA
www.CO2Meter.com







































Appendix
CO2LEVELSANDGUIDELINES
Non‐EnforcedReferencelevels
NIOSHrecommendations
250‐350ppm:normaloutdoorambient
concentrations
600ppm:minimalairqualitycomplaints
600‐1000ppm:lessclearlyinterpreted
1000ppm:indicatesinadequateventilation;
complaintssuchasheadaches,
fatigue,andeye/throatirritation
willbemorewidespread.1,000ppm
shouldbeusedasanupperlimit
forindoorlevels.
EPATaiwan:600ppmand1,000ppm
Type1indoorareassuchasdepartment
stores,theaters,restaurants,libraries,
theacceptableCO2concentrationforan
8hoursaverage(TWA)is1,000ppm.
Type2indoorareaswithspecialrequirements
forgoodairqualitysuchasschools,
hospitals,anddaycarecenters,the
suggestedCO2levelis600ppm.

RegulatoryExposurelimit
ASHRAEStandard62‐1989:1,000ppm
CO2concentrationinoccupiedbuildingshould 
notexceed1,000ppm.
Buildingbulletin101(Bb101):1,500ppm
UKstandardsforschoolsstatethatCO2levels
overaday(i.e.9amto3.30pm)shouldnot
exceed1,500ppm.
OSHA:5000ppm
Timeweightedaverageoveran8‐hourwork
dayshouldnotexceed5,000ppm.
Germany,Japan,Australia,UK:5,000ppm
Occupationalexposurelimitis5,000ppmover
an8hourworkday.