Co2meter TR250Z User manual

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Copyright © 2015 CO2 Meter. All Rights Reserved.
User Manual
TR250Z Oxygen Sensor
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CM‐013425%O2Transmitter
CM‐0134‐WT25%O2TransmitterwithTubeSampling
CM‐015025%O2withMountShield
CM‐016095%O2Transmitter
CM‐0160‐WT95%O2TransmitterwithTubeSampling
CM‐016195%O2withMountShield
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TR250Z Oxygen Transmitter – Manual CO2Meter.com
Rev. 27 April, 2015 Pg. 2 of 13
Table of Contents
WELCOME.....................................................................................................3
IMPORTANTSAFEGUARDS............................................................................3
DEVICESPECIFICATIONS................................................................................4
PACKAGECONTENTS.....................................................................................5
SOFTWARE................................................................................................5
MINIMUMSYSTEMREQUIREMENTS...............................................................5
QUICKSTARTGUIDE...................................................................................6
DESCRIPTION.............................................................................................6
STANDARDOPERATION.................................................................................7
ENTERINGTHESERVICEMENU......................................................................7
PERFORMINGANATMOSPHERICSPANCALIBRATION....................................7
PERFORMINGA0%OXYGENZEROPOINTCALIBRATION................................8
TERMINALCONNECTORS...............................................................................8
0‐10VOUTPUT(OPTIONAL)...........................................................................8
MODBUS/RS‐485.........................................................................................9
INPUTREGISTERS........................................................................................9
HOLDINGREGISTERS...................................................................................9
POWERINGTHEUNIT...................................................................................9
LCDDISPLAY.............................................................................................9
THEORYOFOPERATION.............................................................................10
CALIBRATION...........................................................................................10
CALIBRATINGUSINGMODBUSORPCCONNECTION......................................10
SUPPORT.....................................................................................................12
WARRANTY.................................................................................................12
RETURNS.....................................................................................................12
LIABILITY.....................................................................................................13
CONTACTUS...............................................................................................13

TR250Z Oxygen Transmitter – Manual CO2Meter.com
Rev. 27 April, 2015 Pg. 3 of 13
Welcome
ThankyouforpurchasingtheTR250ZOxygenSensor.TheTR250Zisalonglife25%or95%
oxygenleveltransmitterthatprovidesmultipleanaloglinearoutputsofO2concentrations.It’s
designedtobearugged,maintenance‐freeadd‐onforOEMsorcanbeusedasadesktopdevice.
Inaddition,itcanbecalibratedinnormalair,orcanuseacalibrationgas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.
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.
7. Donotoperatethedevicewiththecoverdetached.
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SAVE THESE INSTRUCTIONS!

TR250Z Oxygen Transmitter – Manual CO2Meter.com
Rev. 27 April, 2015 Pg. 4 of 13
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:
O2OutputValue4‐20mA,linearlyscaled
2‐10VDCOptional
RS‐485 ModbusInterface

TR250Z Oxygen Transmitter – Manual CO2Meter.com
Rev. 27 April, 2015 Pg. 5 of 13
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
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Software
VisitCO2Meter.comandgotothe“Downloads”page(seelinkbelow)todownloadourDASor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DASorGas‐LabUserInstructionManuallocated
inthewebsitebelow.http://www.co2meter.com/pages/downloads
IMPORTANT:MAKESURETOINSTALLSOFTWAREBEFORECONNECTING
YOURDEVICETOYOURCOMPUTER
Byinstallingour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select“Run”
whenpromptedbyyourbrowser(asshownon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.

TR250Z Oxygen Transmitter – Manual CO2Meter.com
Rev. 27 April, 2015 Pg. 6 of 13
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InstallDAS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.
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.

TR250Z Oxygen Transmitter – Manual CO2Meter.com
Rev. 27 April, 2015 Pg. 7 of 13
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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.
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“1234”
or“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whenyoupress123oneafteranotherinthatsequentially.
4. Thedisplaywillshow1234flashingindicatingthatyouareintheservicemenu
5. Press2toentertheOxygensubmenu
6. Press2againtoperformtheatmosphericcalibration
7. Press3toescape

TR250Z Oxygen Transmitter – Manual CO2Meter.com
Rev. 27 April, 2015 Pg. 8 of 13
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whenyoupress123oneafteranotherinthatsequentially.
6. Thedisplaywillshow1234flashingindicatingthatyouareintheservicemenu
7. Press2toentertheOxygensubmenu
8. Press1tocalibrate
9. Press3toescape
Terminal Connectors
1. VDC=G‐G+
2. O24‐20mA=SIGGND
3. RS‐485INTERFACE=ABGND
4. RESET=RST
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0-10V Output (Optional)
Togeta10voltspan(2‐10voltinpractice)froma4‐20mAline,adda500ohmresistorfromsignalto
ground.500ohmsx.004amps=2voltsand500ohmsx.020amps=10volts.
Installtheresistoratthereceivingend,asthiseliminatesallvoltagedropsfromresistanceinthewire.
4‐20mAand2‐10Vareusedsoitcanbedeterminedifthetransmitterisactuallypresent.Lessthan4mA
or2V:notransmitter,notconnectedornosignal.

TR250Z Oxygen Transmitter – Manual CO2Meter.com
Rev. 27 April, 2015 Pg. 9 of 13
Modbus / RS-485
ThesensorsupportMODBUSprotocolsoverRS‐485,unidirectionaltransmissionat9600kbps.Address0
orFE.
ThefollowingModbusregistersareavailable:

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

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.

LCD Display
TheLiquidCrystalDisplay(LCD)screenshowsthefollowingfeatures:
CO2inpercentageformat(##.##%)for100%

TR250Z Oxygen Transmitter – Manual CO2Meter.com
Rev. 27 April, 2015 Pg. 10 of 13
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.
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.

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.