120
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+GF+SIGNET
8850
Conductivity
Instrument
+GF+SIGNET
IntegralAdapterKit
(3-8052)(soldseparately
+GF+SIGNET
UniversalAdapterKit
(3-8050)(soldseparately)
IntegralMountPipe,Tank,WallMountPanelMount
+GF+SIGNET
Conductivity
Electrode
(soldseparately)
+GF+SIGNET
8850
Conductivity
Instrument
+GF+SIGNET
8850
Conductivity
Instrument
3/4in.NPTFittings-Customersupplied
Panel,Pipe,Tank,WallMount
+GF+SIGNET8850Instrument
Pipeextension
orconduit
with3/4in.
FNPTthreads
(customersupplied)
Submersibleinstallationnotapplicable
forSanitaryConductivityElectrode.
+GF+SIGNET
Conductivity
Electrode
(soldseparately)
SubmersibleSensorInstallationIn-lineSensorInstallation
8850ProcessPro
?
ConductivityTransmitters
Features
?MeetsUSPrequire-
mentsforrawconduc-
tivitymeasurements
?DisplaychoicesofμS,
mS,K?,M?,PPM
(TDS)
?Simulatefunction
?Programmable
temperature
compensation
?Relayandopen
collectoroptions
?Dualoutputoption
allowstemperature
andprocesssignal
transmission
?NEMA4X/IP65
enclosurewithself-
healingwindow
Application
?RO/DISystemControl
?RinseTankControl
?CoolingTower,
ScrubberorBlowdown
Control
?Environmental
Study(TDS)
?DesalinationMonitor
?WaterQuality
Monitoring
?LeakDetection
?Chemical
Concentration
CompatibleElectrodes
Description
The+GF+SIGNET8850Conductivity
Transmitterisdesignedformultiple
installationcapabilities,simpleset-up
andeasyoperation,thussatisfyinga
broadrangeofapplication
requirements.
Fullmicroprocessorbasedelectronics
allowforawideoperatingrangeand
longtermsignalstabilityinthreedifferent
instrumentversions:the8850-1fora
traditionaltwo-wirecurrentloop,the
8850-2featuringcurrentloopplustwo
drycontactrelays,orthe8850-3which
sportstwo-wirecurrentloopandaccepts
The8850ProcessPro
?
Flow
Transmitteriscompatiblewiththe
following+GF+SIGNETFlow
Electrodes:
281928212823
282028222839
284028412842
NotcompatiblewithDryLoc
styleelectrodes.Seeindividual
catalogpagesformore
information.
SystemOverview
PanelMountPipe,Tank,WallandIntegralMount
twodifferentsensorinputsignalsand
twocurrentloopoutputs.
The8850isofferedwithaNEMA4X/
IP65frontpanelwithaself-healing
windowinaconvenient1/4DIN
packageforeasymounting.The8850
canbeconfiguredviaasimplemenu
system.Inadditiontoprogrammable
outputsandrelays,theunitcanalsobe
setuptomeasurerawconductivity
valuessimplybyturningoffthe
temperaturecompensationmode,hence
meetingUSPrequirements.
E171559
CUS
?
LR092369
121
www.gfsignet.com
Conductivity/
R
esistivity
Dimensions
Specifications
Mfr.PartNo.Code
3-8850-1159000228
3-8850-1P159000229
3-8850-2159000230
OrderingInformation
AccessoriesandReplacementParts
Mfr.PartNo.CodeDescription
96mm(3.8in.)
96mm
(3.8in.)
Optional
Splashproof
RearCover
56mm
(2.2in.)41mm
(1.6in.)
97mm
(3.8in.)
92mm
(3.6in.)
82mm
(3.23in.)
106mm
(4.18in.)
41mm
(1.6in.)
General
Compatibleelectrodes:
+GF+SIGNET3-28XX-XStandardand
Certified(NIST)SeriesConductivity/
ResistivityElectrodes
Accuracy:±2%ofreading
Display:
Alphanumeric2x16LCD
Contrast:Userselected,5levels
Materials
Case:PBT
Panelcasegasket:Neoprene
Window:
Polyurethanecoatedpolycarbonate
Keypad:Sealed4-keysiliconerubber
Electrical
Power:
?12to24VDC±10%regulated
(-1)21mAmax.:(-2)220mAmax.:(-3)
60mAmax.
Sensorinputrange:
?Conductivity:0.055to400,000μS/cm
?Resistivity:10K??cmto18.3M??cm
?TDS:0.023to200,000ppm
?Temperature:
PT1000,-25°Cto120°C(-13°Fto248°F)
Open-collectoroutput:Hi,Lo,Pulse,Off
Open-collector,opticallyisolated,
50mAmax,sink,30VDCmax.withpull-up
resistor.
Hysteresis:UserAdjustable
Max400pulses/min.
3-8850-2P159000231
3-8850-3159000232
3-8850-3P159000233
Mfr.PartNo.Code
Electrical(continued)
Currentoutput:
4to20mA,isolated,fullyadjustable
andreversible
Maxloopimpedance:
50?max.@12V,
325?max.@18V,
600?max.@24V
Updaterate:0.5seconds
Accuracy:±0.03mA@25°C,24V
Relayoutput:
MechanicalSPDTcontacts:Hi,Lo,
Pulse,Off
Maximumvoltagerating:
5A@30VDC,or5A@250VAC
resistiveload
Hysteresis:UserAdjustable
Max400pulses/min.
Environmental
EnclosureRating:NEMA4X/IP65front
Operatingtemperature:
-10°Cto70°C(14°Fto158°F)
Storagetemperature:
-15°Cto80°C(5°Fto176°F)
Relativehumidity:
0to95%,non-condensing
ShippingWeight:0.6kg(1.32lb.)
StandardsandApprovals
?CSA,CE,ULlisted
?ManufacturedunderISO9001:2000
forQualityandISO14001:1996for
EnvironmentalManagement
ForMoreInformation:
?Forwiringinformationsee
page176.
?Forinstallationtipsand
informationseepage170.
Model8850
OrderingNotes:
1)Instrumentscanbe
mounteddirectlytoa
sensorbychoosingthe
following:
?Orderintegraladapterkit
3-8052(soldseparately)
toconnectthesensorto
aninstrument.
?Thefollowingsensorpart
numberscanbeusedfor
integralmounting:
3-2819-1,3-2820-1,
3-2821-1,3-2822-1
(with3-2820.390),and
3-2823-1.
2)Usetheuniversalmount
kit(3-8050)withthefield
mountinstrumenttomount
toapipe,tankorwall.
3)Tomountthepanel
versiontoawall,usethe
heavydutywallmount
bracket
4)OrderRCfilterkitsto
protectrelaysfrom
voltagespikes.
3-8850-XPPanelMount
Fieldversionwithuniversal
mountingkit.
Mounting
3-8050159000184Universalmountingkit
3-8050.395159000186Splashproofrearcover
3-80521590001883/4in.Integralmountingkit
3-8052-11590007553/4in.NPTmountjunctionbox
3-0000.596159000641Heavydutywallmountbracket(forpanelmountonly)
3-5000.598198840225SurfaceMountBracket
3-8050.392159000640Model200retrofitadapter
LiquidTightConnectors
3-9000.392159000368Liquid-tightconnectorkitforrearcover(3connectors)
3-9000.392-1159000839Liquid-tightconnector(1set),NPT
3-9000.392-2159000841Liquid-tightconnector(1set),PG13.5
Other
3-8050.396159000617RCFilterkit(forrelayuse),2perkit
3-8850
-1Oneinputwith4to20mAoutputandoneopencollector;uses4-wirepower
-2Oneinputwith4to20mAoutputandtworelays;uses4-wirepower
-3Oneinputwithtwo4to20mAoutputsand2opencollectors;uses4-wirepower
-Integralmountpackage
P
3-8850-2PExamplePartNumber
Panelmountpackage
InstrumentPartNumber
ConductivityTransmitter
Selectthemodelsuitedtotheapplication
Fieldorpanelmount-chooseone
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