Oppermann Regelgeräte CO2-W-LC User manual

CO2sensor CO2-W-LC / CO2-K-LC
for interior room (W) or duct (K) installation
Sensor ventilation air conditioning | Data sheet No. 14106 | Version 06-2012 | 1| 4
•Automaticinternalself-calibrationand
self-diagnosticswithserviceintervalsin
excessof5years.
•Latestgeneration(NDIR)infraredtechnology
formeasuringcarbon-dioxidegas.
•Multi-functionaldetectionandcontrolofCO2
•TwolinearanalogoutputsforCO2
•LCDdisplayoptional
•Forcontrollingventilationdemandasa
functionofCO2concentration(recommended
threshold<1,000ppm)
TechnicalData
CO2sensor: Non-dispersiveinfraredtechno-
logy(NDIR)withautomaticbase
correction
Sensor range - CO2: 0–3,000ppm(factorycalibration:
0–2,000ppm)
Error limits - CO2: ±30ppm±3%ofthesensorreading
Repeatability accuracy: ±20ppm±1%ofthesensorreading
CO2pressure sensitivity:+1.6%ofsensorreadingperkPa
variancefromstandardpressure
(100kPa)
Annual zero point drift : <±10ppm
CE marking: 2004/108/EC(EMC)
Service interval: 5years(recommended
fortherstinspection)
Service life: >15years
Ambient conditions: Humidity0–95%RH,
(non-condensing)
 Storagetemperature:-20–+70°C
 Operatingtemperature:0–50°C
Protection type: IP30(W),IP65(K)
Dimensions (L x W x D): Seedimensioneddrawing
Weight: Approx.80g(W)/260g(K)
Power supply: 24VAC/DC±20%
50/60Hz
Power consumption: 2watts
Congurations
• Withoutdisplay:CO2-W-LC
• Withdisplay:CO2-W-DLC
• Airductinstallationwithoutdisplay:CO2-K-LC
• Airductinstallationwithdisplay:CO2-K-DLC
• SeeDatasheetNo.14101forcongurationswith
additionaltemperaturesensor
Heat up time: 15min
Response time T 1/e: <10sat30cc/minow-through,
<3minondiusion
Run-in period: 3weeksafterstartup
Screw terminals: Max.1.5mm²
Outputs
Analog output: 2linearanalogoutputs
OUT1andOUT2forCO2
OUT1:xed0–10VDC
(RLoad>5kΩ)
OUT2:2–10Vor4–20mA
(RLoad≤500Ω)adjustablewith
jumper.
Output resolution: 10mV
Analog output accuracy:±2%ofsensorreading±50mV
Wall housing (W)
Duct installation (K)

CO2sensor CO2-W-LC / CO2-K-LC
2| 4| Sensor ventilation air conditioning | Data sheet No. 14106 | Version 06-2012
Productdescription
TheCO2sensorisafullydigitalsensorunitfordetectingpersonsin
rooms.Itisdesignedtomeasurethecarbondioxideconcentration
inairtocontroltheventilationsystemasrequired.Thesensor
consistsofamembraneconnectedtoameasurementcavity.The
diusiontechnologyusedonthiscarbondioxidesensorfacilitates
astableandreliabledevicewithhighaccuracy.TheLCDdisplay
showsCO2inppm(option).Selfcalibrationisautomaticallyperfor-
medeverytimeafterthepowersupplyisconnected,andthenin
regularlyrecurringintervals.Toensureoptimumself-calibration,
theventilationshouldsupplyanormalCO2concentrationfor
severalminutesinintervalsofatleastoneweek.
ThesensorhastwoanalogoutputsOUT1
andOUT2thatbothoutputalinearsignal
correspondingtothesensorrangeofthe
sensor.
OutputOUT1ispermanentlysetto0–10VDC.
OutputOUT2canbeconguredfor4–20mA
(current)or2–10VDC(voltage)withajumper.
OutputOUT2canalsobeusedtodisplaythe
statusbecausethisoutputissetto1Vor2mA
bytheself-diagnosticsintegratedintothe
sensorwhenafaultoccurs.
IfoutputOUT2outputseither0Vor0mA,the
sensorisnotyetready.
Electricalconnection
Jumper setting for output 2 (OUT 2) =
4 – 20 mA
Jumper setting for output 2 (OUT 2) =
2 – 10 V = default setting
+
~
+
~
+
~
+
~
Applications
Thecarbondioxideconcentrationisgenerallyacceptedasa
goodindicatorfortheoccupancyloadonaroom.Sucientven-
tilationcanalsocounteractthespreadofvirusesandbacteria,
thecauseforillnesses,absenteeism,andtheresultinglossof
productivity.
Studiesdemonstratethatcontrollingventilationbasedoncon-
trollingCO2cancutheatingcosts.
Terminals Function Electrical specications Comments
+~ Supply(+) 24VAC/DC+
(±20%),2W
GNDreference/
systemground(-) 24VAC/DC- System
voltagereference
OUT1 Analogoutput1(+) 0–10VDC 0–2,000ppmCO2
OUT2 Analogoutput2(+) 2.0–10.0VDCor
4.0–20.0mA 0–2,000ppmCO2
0.9–1.6VDCor
1.5–2.5mA Status=ERROR
0VDCor0mA Status=NOTREADY
Attention:
The same GND
reference (Power
Ground) must be
used for all connected devices
and sensors to avoid incorrect
readings.Connectanalogoutputs
beforemeasurement.Afterinstal-
lingthesensor,continuetoapply
powertoallowtheCO2sensorcell
torun-in.
Option Display
CO2-Sensor
+
~
Power supply 24 V AC/DC ± 20 %
Output 0 – 10 V DC Output 2 – 10 V DC or 4 – 20 mA Jumper for OUT 2

Sensor ventilation air conditioning | Data sheet No. 14106 | Version 06-2012 | 3| 4
CO2sensor CO2-W-LC / CO2-K-LC
Wallversioninstallation
Attention:thecorrectpositioningandconnectionofcablesto
tradestandardsisabasicconditionforproperfunctionality.
Ventilationisparticularlyimportant.
Notethefollowinginstructions:
• Thesensormustbemountedverticallyonaninteriorwall.
• Ensureunrestrictedaircirculationoninletsandoutlets.
• Attention:Noadditionalopeningsonthehousingorother
measurestomodifyaircirculationandheatdistributionare
permittedonthedevice.
• Onlyinstallthesensorwhereitisnotexposedtostronglight,
heat,sunirradiation,orairow.
• Waituntilconditionshavestabilized.
Installbypushingintheretaininghookalongthetopofthe
housingwithascrewdriver(seegure)andremovethehousing
cover.
Wallhousingdimensions
80
28
30
60
44
30
100
Zum Önen hier drücken
80
28
30
60
44
30
100
Press here to open
Installation
Pleaseobservetheseinstructions.
Allwork(suchasinstallation,electricalconnection,startup,
operation,andmaintenance)mustonlybeperformedbysuf-
cientlyqualiedtradesmen.Therespectivelyapplicablelocal
rulesandregulations(e.g.nationalbuildingcodes,electrical/
VDEregulations,etc.)mustbeobserved.Installersandopera-
tingentitiesarerequiredtosucientlyfamiliarizethemselves
beforestartup.Readtheproductdescriptionbeforeoperating
theequipment.Verifythattheproductcanbeusedforthe
relevantapplicationwithoutrestrictions.Wearenotliablefor
printingerrorsandchangesafterprinting.Appropriateuse
impliescompliancewithoperatingandinstallationinstruc-
tions.Wearenotliableforlossesduetoinappropriateuse.
Unauthorizedorinappropriatemanipulationsormodications
ofthedevicerendertheoperatingpermit,theproductwarranty
andwarrantyclaimsnullandvoid.
Dimensions in mm

4| 4| Sensor ventilation air conditioning | Data sheet No. 14106 | Version 06-2012 Specications subject to change.
CO2sensor CO2-W-LC / CO2-K-LC
Oppermann Regelgeräte GmbH | Im Spitzhau 1 | 70771 Leinfelden-Echterdingen, Germany
Phone [phone] | Fax [phone] | [e-mail] |www.oppermann-regelgeraete.de
InstallationofductversionK
Thecorrectpositioningandconnectionofcablestotrade
standards,aswellaspropersealingisabasicconditionfor
properfunctionality.Notethefollowinginstructions:
• Attention:Duetothepressuredierentialbetweentheduct
andtheenvironment,thesealandcablefeed-throughmust
beinstalledwithspecialcare.Incorrectreadingscanbe
theresultofairinltration.Noadditionalopeningsonthe
housingorothermeasurestomodifyaircirculationandheat
distributionarepermittedonthedevice.Ifnecessary,seal
theductinletwithadditionalsealantiftheincludedgasket
isinsucientbyitself(e.g.onsmallerradii/pipes).
• Cablebushingsinparticularmustbesealedproperly.Never
insertmorethanonecablepercablebushing,sinceleaks
canresultinincorrectreadings.Onlyinstallthesensor
whereitisnotexposedtostronglight,heat,sunirradiation,
orairow.
• Probe tube installation:
DrillaØ25mm(10)fortheprobetube(1)and2Ø4mmfor
themountingscrews(5)atasuitablelocationintotheduct.
Thenmounttheprobetubeincludinggasket(2)totheduct
withscrews(5).Notethatthelargesttap(3)islocatedonthe
bayonetlockoftheprobetube.Ifnecessary,sealtheareaof
thegasket(2)withadditionalsealant..
• Housing installation:
Thehousingwithfactory-installedO-ring(6)andelectronics(7)
issimplyconnectedtotheprobetubewiththebayonetlock.
Engagetheuppersideofthehousinglightlyinacounter-
clockwisedirectionfromthelargesttap(3)oftheprobetube
andthenrotatethehousingtotheright(seesupplemental
drawing12).Insertthecableintothecablethread(9)and
connectittothefactory-installedelectronics(7).Thensecure
thesnap-onlid(8)tohousing.Theunitisdisassembledinthe
reverseorder.
4
Dimensions
4
Dimensions
4
Dimensions
1
CO2/ temperature transmitter for
mounting in ventilation ducts
1
2
1
2
3
456
7
9
8
10
1 Sampling probe 6 O-ring 29,2x3,53 (Factory supplied mounted in box)
2 Sealing gasket 7 PCB (Factory supplied mounted in box)
3 Largest locking nob 8Snap-in lid
4 2 washers 9PG9 cable entry bushing
5 2 screws 10 Temperature sensor (to be put into the sampling tube)
2
Mounting of aSENSE on to the duct.
11
10
10 Hole with 25 mm diameter
11 Temperature sensor with 110 mm cable mounted in the sampling probe
Mounting Instruction
Since there might be a substantial pressure difference in duct mounting applications,
it is essential to avoid ambient air from suction into the duct mounting box. For
correct function it is indispensible that the sealing of the box cover, the cable entry
bushings, the cable feed through and the duct entrance are absolutely tight. The duct
entrance may need extra sealing paste in order to prevent leakage. The PCB must
be handed carefully and protected from electrostatic discharge.
1) Electrical cable entry: The box has a factory mounted cable entry bushing in
dimension PG9. Never feed more than one cable through each cable entry
bushing, or else gas might leak through!
Dimensions in mm (inch)
1: Sensor probe tube - note
position (airow sampling
either from left or right)
DimensionsDucthousing