Co2meter iSense CM-0180 User manual


Copyright © 2014 CO2 Meter. All Rights Reserved.
User Manual
iSenseRemote
OxygenSafetyAlarm

CM‐0180–25%Oxygen
CM‐0181–95%Oxygen

iSense Oxygen Transmitter – Manual CO2Meter.com
Rev. 27 October 2014 Pg. 2 of 21
Table of Contents
TABLEOFCONTENTS...................................................................................2
WELCOME...................................................................................................3
IMPORTANTSAFEGUARDS...........................................................................4
DEVICESPECIFICATIONS..............................................................................5
PACKAGECONTENTS...................................................................................6
GASLAB®SOFTWARE..................................................................................6
MINIMUMSYSTEMREQUIREMENTS.......................................................................7
QUICKSTARTGUIDE...........................................................................................8
DESCRIPTION...................................................................................................11
STANDARDOPERATION.............................................................................11
ENTERINGTHESERVICEMENU..................................................................12
PERFORMINGANATMOSPHERICSPANCALIBRATION................................12
PERFORMINGA0%OXYGENZEROPOINTCALIBRATION............................12
TERMINALSCONNECTORS.........................................................................13
MODBUS/RS‐485.....................................................................................13
INPUTREGISTERS..............................................................................................14
HOLDINGREGISTERS.........................................................................................14
POWERINGTHEUNIT........................................................................................15
LCDDISPLAY...................................................................................................16
THEORYOFOPERATION.....................................................................................16
CALIBRATION...................................................................................................16
CALIBRATINGUSINGMODBUSORPCCONNECTION..............................................17
SUPPORT...................................................................................................20
WARRANTY...............................................................................................20
RETURNS...................................................................................................20
LIABILITY...................................................................................................21
CONTACTUS.............................................................................................22

iSense Oxygen Transmitter – Manual CO2Meter.com
Rev. 27 October 2014 Pg. 3 of 21
Welcome
ThankyouforpurchasingtheiSenseRemoteOxygenSafety
Alarm.Thisunitallowsyoutomeasureoxygenininaccessible
areas.TheiSenseisalonglife0‐25%oxygenleveltransmitter
thatprovidesmultipleanaloglinearoutputsofO2
concentrations.It’sdesignedtoberugged,maintenance‐free
andcanbecalibratedinnormalairofanyknownoxygen
concentration.
Ourgoalistomakehigh‐quality,low‐costgasdetectionand
indoorairqualityproductsavailabletoyou.
Pleasetakesometimetoreadthroughthismanualinorderto
getthemostoutofyourmeter.Makesuretovisitourwebsite
regularlytofindmoreinformationaboutthisproductandto
downloadthesoftwarefree.Onceyoudownloadandinstall
thesoftware,youcanusethe“Checkforupdates”function
undertheHelpmenutosearchfornewupdates.Pleasealso
payspecialattentiontotheimportantsafeguardsshownon
thepagesahead.

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Rev. 27 October 2014 Pg. 4 of 21
Important Safeguards
Toreducetheriskoffire,electricalshockand/orinjurytopersons,
basicsafetyprecautionsshouldalwaysbefollowedwhenusing
electricalappliances,includingthefollowing:
1. READALLINSTRUCTIONSBEFOREUSINGTHISDEVICE!
2. Useonlythesuppliedpowersupplytooperatetheunit.
3. Ensurethatwhensamplinginaclosedenvironmentthatthe
tubesaresecurelyfashionedtothedevice.
4. Donotoperatewithablockedoffsamplepath.
5. Donotoperatethedeviceifitismalfunctioning.
6. Donotinstallthedeviceoutsideinexposedconditions.Dueto
thenatureofthedesigntheenclosurecannotbemadewater‐
tightandtheunitmustnotbeexposedtowater.



SAVE THESE
INSTRUCTIONS!

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Rev. 27 October 2014 Pg. 5 of 21
Device Specifications
MeasuringRange:
25%O20‐25%vol.
95%O20‐95%vol.
Repeatability:
0‐25%CO2±0.05%,±1%of measuredvalue
0‐95%O2±0.02%,±1%of measuredvalue
Accuracy
25%/95%

±2%fullscale
PowerSupply:
MaximumVoltage24VDC
MinimumVoltage20VDC
PowerConsumption600mA@24VDC
SensorRatings:
LifeExpectancy>15years
MaintenanceIntervalNomaintenancerequired
Warm‐upTime<15min(instantmeasurements)
Outputs:
Relay
O2OutputValue

30VDC1A/NCandNOcontacts
4‐20mA,linearlyscaled
RS‐485ModbusInterface
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Package Contents
Pleaseverifythatyourpackagecontainsthefollowingitemsbefore
usingtheunit:
Contents:
(1)Meter
(1)CertificateofCalibration
(1)UserManual
(1)Powersupply
(1)2MeterUSBtoRS‐485Cable
(1)ScreenBreather
GasLab ® Software
VisitCO2Meter.comandgotothe“Downloads”page(seelinkbelow)
todownloadourGasLab®softwarefreeorformoreinformationon
howtoconnect,configure,andcalibrateyourmeter.Forgeneral
informationabouttheprogram,pleaseseetheGasLab®User
InstructionManualincludedwithyourmeter/sensor.Additionalcopies
oftheGasLab®usermanualisavailableat
http://www.co2meter.com/pages/downloads
IMPORTANT:MAKE SURE TO INSTALL SOFTWARE BEFORE
CONNECTING
YOUR DEVICE TO YOUR COMPUTER
ByinstallingourGasLab®softwarefirst,youwillensurethatthe
properdrivernecessaryforyourunitisinstalledonyourcomputer
beforeconnectingyourmeter.Clickonthe“InstallNow”linkandthen

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Rev. 27 October 2014 Pg. 7 of 21
select“Run”whenpromptedbyyourbrowser(asshownonFigure1
below).
Minimum System Requirements
Toutilizeourfreesoftware,yourcomputermustmeetthefollowing
requirements:
WindowsXPSP3orhigher
Microsoft.NetFramework3.5SP1
Pentium4(ornewer)operatingat2.4Ghzorfaster
1GBofRandomAccessMemory(RAM)
Harddiskspacewithatleast20Megabytes(MB)free(200+MB
recommendedforlogsandapplicationfiles)
Softwareiscompatiblewith64‐bitoperatingsystemsandisfully
testedwithWindows7.
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
Figure1:InstallGasLab®online(InternetExplorer9shown)
Quick Start Guide
Makesureyoureadthroughtheseinstructionsthoroughlybefore
usingyourmeter.Thisguidewillhelpyoufamiliarizewithyourmeter
inordertobeasproductiveasyouneedtobeintheleastamountof
timepossible.

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

MuteButton
Thescreameractivateswhenthevalues
ofOxygenarelowerthan19.0%andit
willlast30seconds.
DataM12Connector
Modbusconnectionfromtheremoteto
theOxygenTransmitter
Display
ShowsO2concentrationlevelanddata
loggingstatus(optional)
PowerInput
Pluggingour24VDCpowersupply
include,youcanTurnON/OFFtheunit.
USB
ThroughtheUSByoucancalibrate,
collectdatainrealtime,downloaddata
andcalibratetheunitusingD
GasLab®software.
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Rev. 27 October 2014 Pg. 10 of 21






BarbFittings
Connecttosamplingsystemforclosed
loopsamplingordiffusion,theunit
comeswithprotectorsforthesensor.
OxygenTransmitter
Oxygensensorthat’scommunicatesto
theremoteviaModbusprotocol
Display
ShowsO2concentrationlevel
SensorTerminals
Connectionsfor4‐20mA,RS‐485,Power
andUART

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Description
Display–Maininterfacetoviewcurrentsensorreadingsandmenu
state.Willblink“STRT”uponapplyingpowerwhilethesensorwarms
upandstabilizes.
LEDs–areinforlowerrightcorneroftheunitonthemainPCBand
arelabeledS,EandP.
SLED–StatusLED.Blinkseverytimeacompletemeasurementcycleis
performedandthevalueisupdated.Serve’sasaheartbeatfor
transmitteroperation.
ELED–ErrorLED.Willlightifanyabnormalconditionsaredetected
withinthedevice,primarilythesensorfallingoutofitsrecommended
operatingspecificationswilltriggerthislamp.
PLED–PowerLED.Willbeoncontinuouslywhenpowerisappliedto
theunit.
Buttons‐TheunithasthreesurfacemountbuttonsabovetheLEDson
thePCB.Theycanbegentlyandcarefullypressedwithyourfinger.
Thesebuttonsallowyoutoaccessallaspectsofsensorsoperationand
testorcalibratedifferentfunctionalmodules.
Standard Operation
TheO2transmitterscomesfactorycalibratedforeasyinstallation.
Duringitslifecyclecalibrationmaybecomeperiodicallynecessary.We
recommendperformingaspanO2calibrationeverymonthfor
guaranteedoperationandensuredaccuracy.Noothercalibrationis
necessaryduringthelifecycleofthesensor.
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Entering the Service Menu
Toentertheservicemenuthebuttonsmustbepressedinafactory‐set
order.Thiscodecanbecustomizedbeforeshipmentbutbydefaultwill
be1‐2‐3.Thebuttonsmustbepressedwithinahalfsecondofeach
other,elsetheunitwillreturntostandardoperatingmode.Whenin
theservicemenutheunitwillnotupdatethecurrentO2readings.
Onceyouenterthemenuthedisplaywillread“2222”.
Performing an Atmospheric Span Calibration
1. Allowsensortostabilizeforatleast1hour
2. Ensurethesensorisexposedtofreshair
3. Entertheservicemenu
4. Press2toentertheOxygensubmenu
5. Press2againtoperformtheatmosphericcalibration
Performing a 0% Oxygen Zero Point
Calibration
1. Allowsensortostabilizeforatleast1hour
2. Screwonthecalibrationadapter
3. ApplyN2calibrationgas
4. Wait5minutesforstablereadings
5. Entertheservicemenu
6. Press2toentertheOxygensubmenu
7. Press1tocalibrate




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Terminals Connectors
1. VDC=G‐G+
2. O24‐20mA=SIGGND
3. RS‐485INTERFACE=ABGND
4. RESET=RST


Modbus / RS-485
ThesensorsupportsMODBUSprotocolsoverRS‐485with
unidirectionaltransmissionat9600kbps.
ThefollowingModbusregistersareavailable:


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Input Registers
1. O2Value,x10
2. RawADCValue
Holding Registers
1. O2SpanValue(4bytefloatingnumber,part1)
2. O2SpanValue(4bytefloatingnumber,part2)
3. O2PotValue
4. 4‐20mAoutputZeroValue
5. 4‐20mAoutputSpanValue(4bytefloatingnumber,part1)
6. 4‐20mAoutputSpanValue(4bytefloatingnumber,part2)
7. ControlRegister
8. StatusRegister

Thefollowingcommandsareavailable:

0x03–ReadHoldingRegister
0x04–ReadInputRegister
0x06–WriteHoldingRegister





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Powering the Unit
Theunitcanbepoweredbyhardwiring24VDCpowerthroughthe
MDCM‐4FP‐2MCable(included)butsamplingunitscanalsobe
poweredbytheincluded24VDCInternationalwallpowersupply.

TopowertheOxygentransmittertheM12connectorneedtobe
connectedtotheRemoteunit.Theoutputsfortherelayareinthe
sameM12cable.TherelayactivateswhenO2godownto18.5%and
desactivatewhenitreach20.9%

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LCD Display
TheLiquidCrystalDisplay(LCD)screenshowsthefollowingfeatures:
CO2inpercentageformat(##.##%)for100%
Theory of Operation
Thezirconiaoxygensensorutilizessolid‐stateelectrochemical
reactionstoproduceavoltageproportionaltothecurrentoxygen.This
voltageisthendigitalizedandfilteredtoausablevalue.Theoxygen
sensorhasalsobeenfactorycalibratedtomeetspecifications.
Calibration
Thecalibrationprocessvariesdependingonthetypeofunitand
whetherithasoptionaldataloggingfunctionalityornot.Allunitsare
factory‐calibratedwithmultiplereferencepointsofgas,andhavebeen
verifiedtobeaccuratewithintheirspecificfunctionalitybefore
shipment.However,iftheunitisseverelyjoltedorotherwise
mechanicallydisturbed,thesensorcandriftrequiringrecalibration.All
calibrationproceduresfollowasingle‐pointcalibrationroutinethat
effectivelyshiftsthezero‐pointoftheO2sensor.


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Calibrating using MODBUS or PC Connection
YoucanDownloadthesoftwaredirectlyandfreefromthislinkinour
website.(http://www.co2meter.com/pages/downloads)
MoreprecisecalibrationscanbeperformedusingthePCconnection.
TheunitcanbeattachedtoaPCusinganoptionalUSBtoRS‐485
cable,availableonourwebsite,orviaamini‐USBcabletotheinternal
USBconnection.UsingtheUSBcableyoucanconnecttheunittothe
computerandstartconfiguringthroughthesoftwareGasLab®.

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
CalibrationoftheOxygenSensor

InthedesktopsoftwareapplicationO2canbecalibratedindividually.
TheO2sensorcanbecalibratedto0%andthento20.9%.
Duringnormaloperation0%calibrationoftheoxygentransmitter
shouldnotbenecessary.
CalibrationcanalsobeperformedoverMODBUS,seeadditional
documentationforMODBUSregisters.
Calibrationcanbeperformedusingeither0%CO2calibrationgas
(typicallynitrogen,Argon,etc.),orusingafreshsourceofair,assumed
tobeapproximately20.9%O2.
Attachcalibrationgastotheunitandconnecttheunittoapersonal
computer.OpenthecalibrationscreenintheGasLab®software.Click
the“Calibrate”buttoninthecalibrationtabforthedesiredgas,
locatedinthe“ConfigureSensor”screen.Aslongasthegas

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Rev. 27 October 2014 Pg. 19 of 21
concentrationisstable,theunitshouldinstantlyreflectthecalibrated
value.Thiscanbeconfirmedbywatchingthedisplay.Toseethe
calibrationvalueinrealtime,clickinthe“AutoLogging”buttonto
capturethesevaluesbeforeopeningtheconfigurationscreen.


Real‐timecapture
Zero or Fresh Air Calibration
ApplygasandselecttheappropriateconcentrationandClickthe
“Calibrate”button.Thesensorreadingshouldinstantlyreflectthe
calibration.
NOTE:DONOTADJUSTTHESPANVALUE.
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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.