Edaphic Scientific ESSAN-01 User manual

Pocket CO2 Monitor & Data Logger
ESSAN‐01
UserManualRev1.61
Copyright©2016CO2MeterInc.
Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform.
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2
Contents
INTRODUCTION...........................................................................................................................3
FEATURES....................................................................................................................................3
DESCRIPTION...............................................................................................................................4
LCDDISPLAY................................................................................................................................4
OPERATION.................................................................................................................................5
PowerButton..........................................................................................................................5
DailyBumpTest.......................................................................................................................5
MENUOPTIONS..........................................................................................................................6
1.SetAlarmThreshold............................................................................................................6
2.SetTemperatureUnits........................................................................................................7
3.Calibration...........................................................................................................................7
4.AltitudeCorrection..............................................................................................................8
5.DataLogging........................................................................................................................8
DATALOGGINGsoftware.............................................................................................................9
Features...................................................................................................................................9
MinimumSystemRequirements.............................................................................................9
QuickStartGuide..................................................................................................................10
InstallingtheSoftware..........................................................................................................11
ConnectingtheMonitor........................................................................................................11
MainScreenOverview..........................................................................................................11
MeterSelect..........................................................................................................................12
DownloadingData.................................................................................................................12
ViewingDataasaGraph.......................................................................................................12
DataArchive..........................................................................................................................13
MAINTENANCE..........................................................................................................................13
Calibration.............................................................................................................................13
CleaningandStorage............................................................................................................13
Troubleshooting....................................................................................................................14
SPECIFICATIONS........................................................................................................................15
WARRANTY................................................................................................................................16
CONTACTUS..............................................................................................................................16
APPENDIXA:CO2LEVELSANDGUIDELINES.............................................................................17
APPENDIXB:ALTITUDECORRECTION.......................................................................................18
APPENDIXC:LOGFILEFORMAT................................................................................................19

3
INTRODUCTION
Thank you for purchasing the ESSAN‐01 Pocket CO2 Monitor and Data Logger. This personal,
batteryoperatedcarbondioxide(CO2)monitorisdesignedtomonitorCO2levelsindoorsorin
confinedspaces.NormalindoorairqualitylevelsareshownbyGreen(good),Yellow(normal)
andRed(warning)LEDs.IfdangerouslyhighCO2levelsaredetected,themonitorwillalertthe
usertoimmediatelyseekfreshairwithacombinationofvisual,audibleandvibratingalarms.
Thismakes the monitor useful for both measuring IAQ as well as a personal CO2 level
protection device.
The ESSAN‐01 Pocket CO2 Monitor and Data Logger uses non‐dispersive infrared (NDIR) CO2
sensing technology to provide long life, accuracy and stability in daily use. In addition to
measuringtheCO2concentration,themonitordisplaystemperatureandrelativehumidity.
TheESSAN‐01PocketCO2MonitorandDataLoggerisshippedfullytestedandcalibratedand,
withproperuse,willprovideyearsofreliableservice.
FEATURES
PersonalprotectionfromhighCO2levelsinenclosedareas
Wearabledesignwithbuilt‐inbeltclip
Stable,long‐lifeNDIRsensorforCO2detection
Upto48hoursofcontinuousmonitoringonfullcharge
Visual,audibleandvibratingalarmlevels(user‐adjustable)forCO2safety
Green/Yellow/RedLEDsquicklyshowcurrentindoorairquality
CO2,temperatureandrelativehumiditydatalogging
Upto65,520time‐stampedrecordsininternalmemory
DatacanbeexportedviaUSBusingsoftware(included)

4
DESCRIPTION
1. GreenLED‐good
2. YellowLED‐normal
3. RedLED‐warning
4. LCDdisplay
5. Powerbutton
6. Menubutton
7. Set&Homebutton
8. Nextbutton
9. HighCO2alarmLED
10. USBchargingport
10,11.Gasentryports
LCDDISPLAY
1. CO2concentrationinppmor%(>9,999ppm)
2. AirTemperature
3. %RelativeHumidity
4. BatteryChargeLevelIndicator
Green/Yellow/RedLEDs
CO2levelindicatorforindoorAirQuality(IAQ):
GreenLED‐CO2isbelow800ppm
YellowLED‐CO2between800‐1,200ppm
RedLED‐CO2levelisabove1,200ppm

5
OPERATION
Fordailyoperation,youshouldonlyneedtoperform3steps:powerthemonitoron,verifythat
thebatteryischarged,andperformabumptest.
PowerButton
1. Pressthepowerbuttontoturnthemonitoron.
2. Whenthemonitorison,pressthepowerbuttonfor3secondstoturnitoff.
Whenthemonitorisinitiallyturnedon,itwillperforma5secondcountdown,thendisplaythe
currentCO2,temperature,andhumiditylevels.Themonitorstartstakingmeasurementswhen
poweredon,andwillupdatethedisplayevery3secondsuntilitispoweredoff.
CheckthebatterylevelindicatorontheLCD.Ifyoudonothaveatleasthalfabatteryinthedisplay,
themonitormaynothaveenoughpowertorunforafullday.
Note:Toconservepower,theLCDbacklightturnsoffautomaticallyafter5secondsofinactivity.
Pressanybuttontoturnthedisplayonagain.
DailyBumpTest
“BumpTest ”isanindustrytermforverifyingthatthemonitorwillsoundthealarmwhenitsenses
highlevelsofCO2.Whileyouareencouragedtoperformafullbumptestdaily,ataminimumyou
shouldperformaquickbumptestdailybeforeenteringanyenclosedareas.
FullBumpTest
1. Turnthedeviceonandwaitforittocompletethe5secondwarmupcycle.
2. Use5%CO2calibrationortestgaswiththebalancenitrogen.Gascanbepurchased
online,orbycontactingCO2Meterat(386)872‐7665.
3. Note:5%CO2gascanbedangerous.Donotbumptestinanenclosedarea!
4. Placethetubingfromthecalibrationgasdirectlyonthebacklefthandsideholenear
theclip,thisholeisdirectlyabovethesensor.Turnonthegas.
5. Thealarmwillsounddependingonthealarmlevelyouset.By
default,thealarmisfactorysetat5,000ppm.
6. Removethetubingandturnoffthegas.AstheCO2gasinside
thecaseisdisplaced,theCO2levelwillreturntonormal.
7. Ifthemonitordoesnotpassthebumptest,donotuseit.
ContactCO2Metersupportat(386)256‐4910ore‐mailusat
[e-mail].

6
QuickBumpTest
Thequickbumptestwillonlyworkifthealarmissettothefactorydefaultof5,000ppm.
1. Turnthedeviceonandwaitforittocompletethe5secondwarmup
cycle.
2. Placethetopendofthemonitorclosetoyourmouthand
breatheintotheholesrepeatedly.
3. TheCO2inyourbreathwillcausetheCO2inthecaseto
increase.Continuetoblowuntilthealarmsounds.Youcanverify
thisonthescreen.
4. Stopblowing.Asyourbreathinsidethecaseisdisplaced,the
CO2levelwillreturntonormal.
5. Ifthemonitordoesnotpassthebumptest,donotuseit.First,
performafullbumptest.Ifthefullbumptestfails,contact
CO2Metersupportat(386)256‐4910ore‐mailusat[e-mail]
MENUOPTIONS
PresstheMenubuttontoenterthemenumode.Thereare5menupages:Alarm,
Temperatureunits,Calibration,AltitudeandDataLogging.PresstheSet/Homebuttonto
returntonormaldisplay.
Note:Ifthemonitorisonandthescreenisblack,pressanybuttontoaccessthemenuoptions.
1. SetAlarmThreshold
IfthemeasuredCO2valueexceedstheselectedalarmthreshold,anLEDwillflash,anaudible
alarmwillsound,andthemonitorwillvibrate.3alarmthresholdscanbeselected:a5,000ppm
CO2alarm,a5,000ppmTWACO2alarmanda30,000ppm(3%)STELCO2alarm,SeeAppendixA
todeterminewhichalarmisbestforyourapplication.
1. PressMenuoncetoselectthealarmfunction.
2. PressNexttochangethealarmthreshold.
3. PressSettosaveandreturntonormaldisplay.

7
2. SetTemperatureUnits
Selecttemperaturescale°Centigradeor°Fahrenheit.
1. PressMenu2timestoselecttemperatureunits.
2. PressNexttoswitchbetween°Cor°F.
3. PressSettosaveandreturntonormaldisplay.
3. Calibration
Themonitorshouldbecalibratedusing100%nitrogen(0%CO2)gasatleastannually.Waitfor
theLCDtodisplaynearzeroppmCO2beforestartingcalibration.Seemoreinformationon
calibrationintheMaintenancesectionofthismanual.
Placethetubingfromthecalibrationgasdirectlyonthebacklefthand
sideholeneartheclip.Thisholeisdirectlyabovethesensor.Runthe
nitrogenuntiltheppmlevelontheLCDdisplaysapproximatelyzero
ppm.
Note:thescreenmayshowawarningforhumidityerror.Thisis
normalduringthecalibrationprocess.
1. PressMenu3timestoselectcalibration.
2. PressNexttoselectYes.
3. PressSettobegincalibration.Calibrationtakes5‐10seconds.
4. “Calibrationsucceeded”willappearoncecalibrationiscomplete.
Turnoffthegasandletthemonitorstabilize.ItwillreturntothenormalindoorCO2level.Two
differentESSAN-01monitorsmayshowdifferentCO2levelsaftercalibration.Iftheyare
within40ppm±3%oftheactualCO2level,theyarewithinthesensor’sspecifications.
Toquicklyverifythecalibration,youcantakethemonitoroutdoors.IftheAltitudeisset
properly,theCO2levelshoulddroptoapproximately400ppmdependingonyourlocation.

8
4. AltitudeCorrection
TheCO2leveldisplayedisaffectedbythealtitude.Thismonitorisshippedwiththealtitudeset
atsealevel(zerofeet).Ifitisusedatahigheraltitude,youshouldfirstcorrectforaltitudeto
insuremaximumaccuracy.Oncethealtitudecorrectionisset,itwillbesavedinmemory.See
AppendixBformoreinformation.
1. PressMenu4timestoselectAltitudeCorrection.
2. PressNexttoraisethealtitudeinincrementsof500feet(150meters)abovesealevel
untiltheclosestaltitudetoyoursisreached.Whenaltitudereaches20,000feet,itwill
returnagaintozerofeet.
3. Presstosavethecurrentaltitudesettingandreturntonormaldisplay.
5. DataLogging
Thedate,time,CO2,temperatureandrelativehumidityarecontinuouslyrecordedevery30
secondswhilethemonitorispoweredon.Atotalof65,520records(approximately22days)can
bestored.Ifthememoryisnotreset,itwill“rollover”andnewdatawilloverwritethememory
beginningattheoldestrecord.
1. PressMenu5timestoselectDataLogging.
2. PressNexttoselectExport,Reset(clearall)MemoryorExitwithoutchanges.
3. PressSettobeginexportingdata,toresetthememory,ortoexittothenormal
display.
GasDataLoggingSoftware
TheGasDataLoggingsoftwareisincludedontheUSBdriveshippedwithyourmonitor.Youcan
installthesoftwarefromtheUSBdrive,orfromthewebsiteat:
http://www.co2meter.com/pages/downloads
Note:beforeexportingdatatoaPC,youmustinstallthesoftwareanddriversfirst,thenconnect
themonitortoyourPCusingaMicroUSBtoStandardUSBcable(included).

9
DATALOGGINGSOFTWARE
IncludedwithyourmonitorisourGasDataLogging
Software.ThisWindowsPCprogramallowsyoutoview
thestoreddataofflinewithauser‐friendlygraphical
interface.Itcanalsobeusedtomanagelogsstoredin
themonitor’sinternalmemoryaswellasexportdatato
atextfileforuseinspreadsheets.
WhileGasDataLoggingisincludedontheUSBdrivewith
themanual,fromtimetotimewemayupdatethe
softwaretoincludeadditionalfeatures.BesuretovisittheCO2Meter.comdownloadpage
regularlytogetthelatestGasDataLoggingsoftwareupdatesatnocharge.
Features
ManageLogs–Downloadandviewdataloggedinthemonitor’sinternalmemory
ViewData–Seeagraphofthelogfiledataonscreen
ExportData–SavelogsasanASCIItextfilethatcanbeimportedintoaspreadsheet
ResetMemory–Clearthemonitor’sinternalmemoryfromthemenu
MinimumSystemRequirements
Yourcomputermustmeetorexceedthefollowingminimumrequirements:
1GHzprocessorwith1GBRAM,1GBfreediskspace(2GBfreediskspacefor64‐bit
systems).
WindowsXP*/7/8/10
OnIntel‐basedMaccomputers,GasDataLoggingsoftwarecanrunusingaWindows
7/8/10virtualmachinesoftwaresuchasVMwareFusion®orsimilar.
IMPORTANT!AlwaysinstallsoftwarebeforeconnectingthemonitortoyourPC
Thesoftwareconsistsofaninstallable.exefileanda.dllfile.Bothfilesmustbeinstalled
correctlyonyourPCbeforeyouplugintheUSBcable.Otherwise,Windowswillinstallan
“unknowndevice”driverandthemonitorwillnotberecognized.Tofixthisproblem,clickthe
linkbelow,orgotoCO2Meter.com,selecttheAppNotestab,anddownloadthefollowing
applicationnote.ItappliestoallourUSB‐connecteddevicesoftware.
AN153: Troubleshooting Software Driver Installation (PDF).

10
QuickStartGuide
1) InstallGasDataLoggingfromthumbdriveor
fromthewebsiteat:
http://www.co2meter.com/pages/downloads
2) Youmustinstallthesoftwarebefore
connectingthemonitor.Afteryouhave
launchedtheGasDataLoggingsoftware,connect
themonitortothecomputerwiththeincluded
USBcable.
3) TheGasDataLoggingsoftwarewill
automaticallylisttheavailablemonitor(s).
4) ClickingontheMeterSelectsectiontoselect
themeteryouwanttoconnect.
5) ClicktheConnectbutton.
6) ClicktheDownloadDatabuttontodownload
andviewdatalogsstoredinthemeter’sinternal
memory.Aprogressbarindicatesthedownload
process.
7) Amessagewillpopupwhenthedownloadis
complete.
8) ClicktheSaveDatabuttonintheData
Archivesectiontosavethecurrentlogtoyour
computerwhendownloadcomplete.

11
InstallingtheSoftware
DoubleclickorselectRunfromthepopupmenutolaunchtheGasDataLoggingexecutable
programasshowninFigure1.
Figure1：GasDataLoggingSoftware
IMPORTANT:THEFTD2XX.DLLFILEISREQUIREDTOCONNECTTHEMONITORVIAUSB.ITMUST
BEINTHESAMEFOLDERASTHEGASDATALOGGINGEXECUTABLEPROGRAM.
ConnectingtheMonitor
Oncethesoftwareissuccessfullyinstalled,youcanconnectthemonitorusingtheprovidedUSB
datacable.Yoursoftwareisnowreadytouse.
MainScreenOverview
TheGasDataLogginginterfacehasvarioussectionsandbuttonsthatyoushouldfamiliarize
yourselfwithbeforeusingthesoftware.Abriefdescriptionofeachsectionisshownbelow.
Figure2：GasDataLoggingMainScreen

12
MeterSelect
TheMeterSelectsectionislocatedonthetopleftareaoftheGasDataLoggingmainscreen,as
showninFigure2.Eachmeter’sCOMportisautomaticallyassignedwhenitisconnectedtoyour
PCthroughUSBcable.ClickontheCOMnumbertoselectthemonitoryouwanttoconnect.Then
clicktheConnectMeterbuttontocommunicatewithyourCO2monitor.
DownloadingData
Onceyourmonitorisconnectedtoyourcomputer,theDataSectionallowsyoutodownloadall
thecurrentlogsstoredinthemonitor’sinternalmemory.WhenyouclicktheDownloadData
button,aprogressbarindicatesthedownloadprocess(Seefigure3).Oncedownloadiscomplete,
youwillseealldataincludingCO2level,temperatureandrelativehumidityintheRawData
WindowandtheGraphSections.
Figure3:DownloadProgressBar
ThedatareadbyyourcomputercanbedisplayedbothgraphicallyintheGraphSectionsandin
rawformatlistedintheRawDataWindow.TheRawDataWindowallowstheusertoseethe
actualdatathatwasstoredonyourmonitor.
ClicktheClearDatabuttontocleartheRawDataWindowandtheGraph.
NOTE:clearingthedatainthesoftwaredoesnotdeletetherawdatastoredinsidethemonitor.
Toclearthemonitor’sdata,youmustselect“Resetmemory”fromtheDataLoggingoptionin
themonitor’ssetupmenu.
ViewingDataasaGraph
TheGraphSectionsallowsyoutoseethevaluesafterthecomputerhasdownloadthedatafrom
themonitor.DatawillautomaticallybegraphedshowingtheCO2levelsinppmor%,Temperature
inFahrenheitorCelsius,andRelativeHumidityin%.ThisdataisshownintheGasConcentration
GraphSection,TemperatureGraphSectionandRelativeHumidityGraphSectionrespectively.You
canclickontheTe mperatureUnitSwitchtochangebetweenFahrenheitandCelsius.
TheConcentrationZoomInandZoomOutbuttonallowsyoutoviewtheCO2concentrationin
fourscales:400ppm,1000ppm,2000ppm,or1%.TheTemperatureandHumidityZoomInand
ZoomOutbuttonsletyouswitchthetemperatureandhumiditygraphscalesaswell.
TheTimescaleofallGraphSectionisalways1hourapart.TheTimeMoveForwardandBackward

13
buttonsallowmovingthetimeforwardorbackwardifthelogtimeislongerthan6hours.
DataArchive
Thissectionofthescreenincludestwobuttons:SaveDatabuttonandOpenFilebutton.
Afterdownloadingthedatafromthemonitor,youcanclicktheSaveDatabuttontosavethe
currentlogfilestoyourcomputer.
The Open File button allows you to select and display previously saved log files from your
computer.
Toexitthesoftware,clicktheEXITbutton.
MAINTENANCE
Calibration
The ESSAN‐01 comes pre‐calibrated from the factory. However, the CO2 sensor should be
calibrated at least once a year, oras described in your company’s safety procedures. You can
performthecalibrationyourself,oryoucanreturnittoCO2Meterforfactorycalibrationata
nominalfee.
CO2calibrationrequires100%nitrogencalibrationgas,aflowregulatorandflexibletubing.These
caneasilybeobtainedonline,orbycallingCO2Meterat(386)872‐7665.
Thetemperatureandhumiditysensorsdonotrequirecalibration,andshouldremainaccuratefor
thelifeofyourunit.
CleaningandStorage
The front cover and case can be cleaned with a mild solution of detergent and water. Apply
sparingly with a soft cloth and allow to dry completely before using. Do not use aromatic
hydrocarbonsorchlorinatedsolventsforcleaning.

14
Troubleshooting
CannotpoweronPressthePowerButtonformorethan0.5seconds.
CheckthattheLi‐ionbatteryischarged.
Ifmonitorischargedbutwillnotturnon,contactsupport.
Monitorisnot
recognizedby
computeror
software
Verifythatsoftwareanddriversareinstalledcorrectlybeforeattaching
monitortoPC.
Verifythesoftwareanddriverswereinstalledbeforethemonitorwas
pluggedintothePCwiththeUSBcable.
Verifythattheftd2xx.dllfileisinthesamefolderastheGasDataLogging
executableprogram.
TryusingadifferentUSBcable.
Windowsreports
“unknowndevice”
error
GotoCO2Meter.com,selecttheAppNotestab,andfollowthe
instructionsfor
AN153:TroubleshootingSoftwareDriverInstallation(PDF).
SlowresponseThelogfilestoredinthemonitorisverylarge.Themonitorneedstime
totransferdatatoyourcomputer.
Readingsdonot
change
Confirmthemonitoriscorrectlyconnectedtothecomputer.Makesure
thecomputerrecognizesyourmonitorandconnectswithyourmonitor
successfully.
Monitor’sdatalogs
overwritten
Monitormemorywillfillandbereusedafterapproximately22daysof
continuoususe.Downloaddatalogsmorefrequently.

15
SPECIFICATIONS
DeviceSpecifications
OperatingEnvironment0°C~50°C(32°F~122°F),<95%RHnon‐condensing
Storage‐10°C~60°C(14°F~140°F),<99%RHnon‐condensing
PowerSupplyLi‐ionbattery(4.2V,1000mAh),MicroUSBcablew.Wallcharger
Dimensions100x60x17mm(3.9x2.4x0.7")
Weight85grams(2.73oz.)
CO2SensorSpecifications
CO2SensorSingle‐beamNDIRdiffusionsampling
MeasurementRange0~50,000ppm(5%Vol)
DisplayResolution1ppm/0.01%
Accuracy±40ppmor±3%ofreading
Repeatability±20ppm@400ppm
Temperature
Dependence
Typ.±0.3%ofreadingper°Cor±4ppmper°C,whicheverisgreater,
referencedto25°C
PressureDependence0.13%ofreadingpermmHg
ResponseTime<60seconds
Warm‐upTime<5secondsat22°C
IAQLEDDisplayGreen:<800ppm•Yellow:800~1200ppm•Red:>1200ppm
Measurementinterval2seconds
TemperatureSensorSpecifications
TemperatureRange‐10.0~60.0°C(14~140°F)display
DisplayResolution0.1°C(0.1°F)
DisplayOptions°C/°Fswitchable
Accuracy±0.5°C(±0.9°F)
ResponseTime5~30seconds(devicemustequilibratewithenvironment)
RelativeHumiditySensorSpecifications
MeasurementRange0.0~99.9%RH
DisplayResolution1%RH
Accuracy±4.5%RH
ResponseTime<8secondsfor63%ofstepchange
OutofrangeofoperatingconditionswillimpacttheaccuracyoftheCO2measurement.Awarning
willdisplaywhenhumidityortemperatureisabovetheratedthresholds(>95%RHcondensing,>
122°For<32°F).

16
WARRANTY
Themonitorcomeswithaone(1)yearwarrantystartingfromthedatethemonitorwasshipped
tothebuyer.
During this period of time, CO2Meter, Inc. 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,Inc.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,Inc.’s
productsmayalterthiswarrantyverballyorinwriting.
LIABILITY
All liabilities under this agreement shall be limited to the actual cost of the product paid to
CO2Meter, Inc. In no event shall CO2Meter, Inc. 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.
RETURNS
If the product fails under normal use during the warranty period an RMA (Return Material
Authorization) number must be obtained from CO2Meter, Inc. After the item is received,
CO2Meterwillrepairorreplacetheitematourdiscretion.
ToobtainanRMAnumber,contact Edaphic Scientific Pty Ltd: [email protected].
WhenrequestinganRMAnumber,pleaseprovidethereasonforreturnandtheoriginalorder
number.
Ifwedeterminethattheproducthasfailedbecauseofimproperuse(waterdamage,dropping,
tampering,electricaldamage,etc.)orifitbeyondthewarrantydate,wewillinformyouofthe
costtofixorreplacetheproduct.
CONTACTUS
[email protected]
Ph: 1300 430 928
Edaphic Scientific Pty Ltd
PO BOX 1843
Port Macquarie, NSW, 2444

17
APPENDIXA:CO2LEVELSANDGUIDELINES
1. CO2AlarmGuidelines
TheOccupationalSafety&HealthAdministration(OSHA)requiresbylawthatworkersmustbe
protectedfrompotentiallydangeroushighlevelsofCO2.Thereare3CO2safetylimitsthatmust
allbefollowed:
5,000ppmCO2.ThisistheOSHAexposurelimitforCO2averagedovera40hourweek.
5,000ppmCO2TWA(Time‐weightedAverage).Aworkplaceisconsideredunsafeifworkers
aresubjectedtoanaverageof5,000ppmCO2oraboveforan8‐hourworkday.
3%CO2STEL(ShortTerm ExposureLimit).AtthisCO2level,analarmmustsoundimmediately
andworkers/occupantsmustleavethearea.
Visitwww.osha.govformoredetailsandtodeterminewhichalarmsettingsarebestforyour
application.
2. IndoorAirQuality
TheGreen/Yellow/RedLEDsareprovidedasa
quickcheckofindoorairquality(IAQ)inschools,
officesandsimilarbuildings.
Whilethereareseveralrecommendedstandards,
themostcommonlyusedistheAmericanSociety
ofHeating,Refrigeration,andAir‐Conditioning
Engineers(ASHRAE)standard,whichstatesthat
maximumindoorCO2levelsshouldbenomore
than700ppmaboveoutdoorCO2levels.SincemostoutdoorCO2is400ppm,thismeansthat
1100ppmisconsideredthemaximumCO2levelforIAQ.
TheNationalInstituteforOccupationalSafetyandHealth(NIOSH)considersindoorair
concentrationsofcarbondioxidethatexceed1,000ppmareamarkersuggestinginadequate
ventilation.
Ingeneral,whenmeasuringCO2indoors,agreenoryellowLEDdenotesacceptableIAQ.Thered
LEDsuggestspoorIAQthatshouldbecorrectedforthebuildingoccupant’shealthandcomfort.

18
APPENDIXB:ALTITUDECORRECTION
CO2sensormodulesarecalibratedatsealevel,
andarenotdesignedtoautomatically
compensateforchangestoCO2athigher
altitudes.
TheCO2levelwillbeapproximately3%lowerfor
everyincreaseof1,000feet(300m)inaltitude.
Forexample,at5,000feetameterreading400
ppmcalibratedatsealevelwouldread
approximately340ppm.
Ratherthanmakingthiscalculationeachtimeyouusethemonitor,youcanlookupyour
location’saltitudeonlineandentertheclosestvalueintothemonitor’smenusettings.Thenthe
calculationwillbemadeautomaticallybeforetheCO2levelontheLCDisdisplayed.
Hereisalistofthe8largestcitiesintheUS,andtheelevationmeasuredattheirairport.
CityAirportwhere
measured
Elevation
(nearest50ft.)
Setmonitor
elevationto
LosAngeles,CALAX150ft.0ft.
Chicago,ILMDW600ft.500ft.
Houston,TXIAH100ft.0ft.
Philadelphia,PAPHL0ft.0ft.
Phoenix,AZPHX1150ft.1000ft.
SanAntonio,TXSAT800ft. 1000ft.
SanDiego,CASAN0ft.0ft.
Dallas,TXDFW600ft.500ft.
Listofmajorcitiesworldwidebyelevation:
https://en.wikipedia.org/wiki/List_of_cities_by_elevation

19
APPENDIXC:LOGFILEFORMAT
Thefollowingtechnicaldetailsallowyoutomanuallyreadtherawdatafromthemonitorusing
aserialterminalprogramoryourownsoftware.
SerialInterfaceSpecifications:
Baudrate=57,600
8bit,onestopbit,noparitybit
Forexample:
SetBaudRate(FT_BAUD_57600);//Setbaudrateto57600
SetDataCharacteristics(FT_BITS_8,FT_STOP_BITS_1,FT_PARITY_NONE);
Commandstodownloadlogfrommonitor:
Theservermustsend“SAN‐0001”or“san‐0001”ASCIIcodethroughtheUSBporttostartthe
download.Forexample:
0X530X410X4E0X2D0X300X300X30
OR
0X730X610X6E0X2D0X300X300X30
DataStream
ThedatafromSAN‐0001willbesentbackinASCIIcodeasshown: