Analytical Technology Q25R User manual

ModelQ45R
ORP Monitor/Analyzer
Model Q25R
ORP Sensor
HomeOffice EuropeanOffice
AnalyticalTechnology,Inc.ATI(UK) Limited
6Iron BridgeDriveUnit 1&2GateheadBusiness Park
Collegeville, PA 19426Delph NewRoad, Delph
Saddleworth
Ph:[phone]Ph: 0800-018-4020
[phone]+ 44(0) 1457-873-318
Fax: [phone]Fax: + 44(0) 1457-874-468
Email: [e-mail] Email:[e-mail]

PRODUCT WARRANTY
AnalyticalTechnology,Inc. (Manufacturer) warrantstotheCustomerthatifanypart(s)
oftheManufacturer’sproductsprovestobedefectiveinmaterialsorworkmanship
withinthe earlierof 18monthsofthe dateof shipmentor12monthsofthedateofstart-
up, suchdefectivepartswillbe repairedorreplacedfree ofcharge. Inspection and
repairstoproductsthought tobe defectivewithinthewarrantyperiodwillbe completed
at theManufacturer’sfacilitiesinCollegeville,PA. Productsonwhichwarrantyrepairs
arerequired shall be shippedfreightprepaidtotheManufacturer. The product(s)will be
returnedfreight prepaidandallowed ifit isdetermined bythe manufacturerthatthe
part(s)failed duetodefectivematerialsorworkmanship.Thiswarrantydoesnot cover
consumableitems,batteries, orwearitemssubjecttoperiodicreplacement including
lampsandfuses. Gassensors,except oxygensensors, arecoveredbythiswarranty,
butaresubject toinspection forevidenceofextendedexposuretoexcessivegas
concentrations. Shouldinspection indicatethat sensorshavebeenexpendedrather
thanfailedprematurely, thewarrantyshall notapply. The Manufacturerassumesno
liabilityforconsequentialdamagesofanykind, and the buyerbyacceptanceofthis
equipment will assumeall liabilityforthe consequencesofitsuseormisusebythe
Customer, hisemployees, orothers.A defectwithinthe meaningofthiswarrantyisany
part of anypieceof aManufacturer’sproductwhichshall, when suchpart iscapableof
beingrenewed, repaired, orreplaced, operatetocondemnsuchpieceofequipment.
Thiswarrantyisinlieu ofall otherwarranties(includingwithout limiting the generalityof
the foregoingwarrantiesofmerchantabilityand fitness foraparticularpurpose),
guarantees, obligationsorliabilitiesexpressedorimplied bythe Manufacturerorits
representativesandbystatuteorruleof law. Thiswarrantyisvoidifthe Manufacturer’s
product(s)hasbeensubject tomisuseorabuse, orhasnotbeenoperatedorstored in
accordancewithinstructions,orif theserialnumberhasbeen removed. Analytical
Technology, Inc. makesno otherwarrantyexpressed orimplied exceptasstatedabove.

TableofContents
PART1-INTRODUCTION........................................5
1.1 GENERAL (Q45R, ORP MONITOR)................... 5
1.2 FEATURES..................................................... 6
1.3 Q45R SYSTEM SPECIFICATIONS ........................ 7
1.4 Q45R PERFORMANCE SPECIFICATIONS .............. 9
1.5 GENERAL (Q25R, ORP SENSOR)...................... 9
1.6 SENSOR FEATURES ....................................... 10
1.7 SENSOR SPECIFICATIONS................................ 10
1.8 IMPORTANT NOTES ...................................... 11
PART2–ANALYZER MOUNTING..........................12
2.1 GENERAL.................................................... 12
2.2 WALL OR PIPE MOUNT ................................. 15
2.3 PANEL MOUNT,AC POWERED MONITOR......... 17
PART3–SENSOR/FLOWCELL MOUNTING............18
3.1 GENERAL.................................................... 18
3.2 FLOW TEE MOUNTING.................................. 20
3.3 UNION MOUNTING ...................................... 21
3.4 SUBMERSION MOUNTING.............................. 23
3.5 INSERTION MOUNTING ................................. 24
3.7 CONVENTIONAL ORP SENSORS ...................... 26
3.71 SEALED FLOWCELL ....................................... 27
3.72 FLOW TEE ADAPTER ..................................... 28
3.8 LOCK-N-LOAD SYSTEM.................................. 29
PART4–ELECTRICALINSTALLATION....................30
4.1 GENERAL.................................................... 30
4.2 TWO-WIRE................................................. 30
4.21 LOAD DRIVE................................................ 32
4.3 115/230 VAC W/RELAYS ............................ 32
4.4 SENSOR WIRING .......................................... 35
4.5 DIRECT SENSOR CONNECTION ........................ 37
4.6 JUNCTION BOX CONNECTION ......................... 38
4.7 COMBINATION ELECTRODE CONNECTION.......... 39
4.8 EXTERNAL TEMPERATURE COMPENSATION ....... 41
PART5–CONFIGURATION...................................42
5.1 USER INTERFACE.......................................... 42
5.11 KEYS.......................................................... 43
5.12 DISPLAY ..................................................... 43
5.2 SOFTWARE ................................................. 45
5.21 SOFTWARE NAVIGATION............................... 45
5.22 MEASURE MENU [MEASURE]...................... 48
5.23 CALIBRATION MENU [CAL]............................... 49
5.24 CONFIGURATION MENU [CONFIG]................ 50
5.25 CONTROL MENU [CONTROL]....................... 53
5.26 DIAGNOSTICS MENU [DIAG]............................ 59
PART6–CALIBRATION......................................... 64
6.1 OVERVIEWAND METHODS ............................ 64
6.11 SENSOR SLOPE ............................................ 65
6.12 SENSOR OFFSET........................................... 65
6.13 2-POINT CALIBRATION EXPLAINED .................. 65
6.14 1-POINT CALIBRATION EXPLAINED .................. 66
6.2 PERFORMING A 2-POINT CALIBRATION ............ 66
6.3 PERFORMING A 1-POINT CALIBRATION ............ 68
6.4 TEMPERATURE CALIBRATION.......................... 69
PART7–PIDCONTROLLERDETAILS..................... 71
7.1 PID DESCRIPTION ........................................ 71
7.2 PID ALGORITHM.......................................... 71
7.3 CLASSICAL PID TUNING................................. 73
7.4 MANUAL PID OVERRIDE CONTROL ................. 74
7.5 COMMON PID PITFALLS................................ 74
PART8–MAINTENANCEANDTROUBLESHOOTING
............................................................................. 76
8.1 SYSTEM CHECKS .......................................... 76
8.2 INSTRUMENT CHECKS ................................... 77
8.3 DISPLAY MESSAGES...................................... 77
8.4 CLEANING THE SENSOR ................................. 80
8.5 REPLACING THE SALTBRIDGEAND REFERENCE
BUFFER SOLUTION ................................................... 81
8.6 TROUBLESHOOTING...................................... 82
SPAREPARTS........................................................ 84

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TableofFigures
Figure1-Q45 EnclosureDim AC Pwrunits.............................................................................13
Figure2-Q45 EnclosureDim 2-Wire&Battunits....................................................................14
Figure3-Wall orPipe mount Bracket......................................................................................15
Figure4-Wall Mounting Diagram ............................................................................................16
Figure5- Pipe MountingDiagram............................................................................................16
Figure6- PanelMount/Cut-outDiagram.................................................................................17
Figure7-Q25 SensorTypes....................................................................................................19
Figure8- Flow Through Tee Mount..........................................................................................20
Figure9- 1.5"Union Mount......................................................................................................21
Figure10 - 2" Union Mount.......................................................................................................22
Figure11 - Sensor Submersion Mount.....................................................................................23
Figure12 - S.S.SensorInsertion Mount...................................................................................24
Figure13 - CPVC SensorInsertion Mount................................................................................25
Figure14 -(63-0008) Comb.pHSensor,Flow .........................................................................26
Figure15 -(63-0023) Combination ORP Sensor, Submersion..................................................26
Figure16 - Sealed Flowcell Details...........................................................................................27
Figure17 - Twist-LockTee .......................................................................................................28
Figure18 - Lock-n-Load Sensor Exploded View.......................................................................29
Figure19 - DC/LoopPower WiringDiagram.............................................................................31
Figure20 - Line Power Connection...........................................................................................34
Figure21 - DC Power Connection ............................................................................................34
Figure22 - Relay Contacts.......................................................................................................35
Figure23 - CableDescription, Model Q25................................................................................36
Figure24 - DetachablesingleShielded Cable, Q25R...............................................................36
Figure25 - Sensor CablePreparation.......................................................................................37
Figure26 - Juncion Box InterconnectWiring.............................................................................38
Figure27 - Sensor Connections,Combination Electrodes........................................................39
Figure28 - Combination Electrode Connection.........................................................................40
Figure29 - ExternalTemperatureCompensation Figure..........................................................41
Figure30 - UserInterface.........................................................................................................42
Figure31 - SoftwareMap.........................................................................................................47
Figure32 - ControlRelayExample, Hysteresis&TwoPhaseOptions......................................56
Figure33 - Alarm RelayExample.............................................................................................57
Figure34 -Q45H ISA (ideal) Equation......................................................................................72
Figure35 - Replacing theSaltbridge andReference Buffer......................................................81

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Part 1-Introduction
1.1General (Q45R,ORPMonitor)
TheModelQ45RORPmonitor/analyzerprovidesanextremelyversatile
measurement systemformonitoringandcontrolofORP (oxidation/reduction
potential, REDOX)overthe rangeof–1000 mV to +2000mV. The instrumentis
offeredstandardasaloop-powered transmitterfor2-wireDC applications.Since
thissystemconfiguration operatesoveronlytwolow-voltagewires, it isidealfor
remotemonitoringapplicationswhereline poweriseitherunavailableor
prohibitivelyexpensivetorun
Q45P Monitorsareavailableinfourelectronicversions,aloop-powered 2-wire
transmitter,an ACpowered monitorwithintegralalarmrelaysanddual4-20mA
outputcapability,a12-24 VDC unitwithdualoutputand relays,ora9VDC
batteryoperatedportableunit withtwovoltage outputsand built-indatalogger.
Inall configurations,theQ45RdisplaysmV,sensortemperature,and outputloop
currenton the secondaryline ofthecustomdisplay.The instrumentmaybe
used witheitherthe highperformanceQ25seriessensorsorwithcombination-
styleelectrodes.
WARNING:Notfollowing operating instructionsmayimpairsafety.
NOTE:Duetothehigh degree offlexibilityoftheQ45 systemoptions,
itisimportanttonoteareasoftheoperating manualthatdetail
these optionalfeatures.Thesoftwarefeaturesfor therelay
outputoption and batteryoption onlyappearwhenthose
modules areconnectedand thesystemhas beenre-powered.

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1.2Features
·StandardQ45Relectronictransmittersaredesigned tobe afullyisolated,
loop powered instrumentsfor2-wireDC applications.Optionalintegral
powersupplycardfor115/230VACoperation, 12-24 vdc, and optional
batterypowersupplycardforportabledataloggingapplicationsare
available.
·OutputHold,OutputSimulate,OutputAlarm,and OutputDelayFunctions.
All forcedchangesinoutput condition includebumpless transfertoprovide
gradualreturntoon-line signallevelsand toavoidsystemcontrolshocks
on bothanalogoutputs.
·ACpoweroptionprovidesdualSPDTrelayoperation andoneadditional
isolated analogoutput.Softwaresettingsforrelaycontrolinclude setpoint,
deadband,phase,delay,andfailsafe.Softwarecontrolsautomatically
appearinmenulistwhenhardwareoptioncardisplugged inandsystem
powerisapplied.
·Twoanalogoutputsonthe relayversion maybe configured totrackORP
and temperature.Bothanalogoutputscanbe individuallyprogrammed to
fail tospecificvalues.
·SelectableOutputFail Alarmfeatureallowssystemdiagnosticfailuresto
be sent toexternalmonitoringsystems.
·SelectableProbeTimerfeatureonRelayBallowsconnectionofprobe
cleanerhardwareorotheraccessoriesthatrequiretimedperiodicrelay
contacts.
·Large,highcontrast,customSuper-Twistdisplayprovidesexcellent
readabilityeven inlowlightconditions.The secondaryline ofdisplay
utilizes5x7dotmatrixcharactersforclearmessagedisplaytwooffour
measuredparametersmaybe on the displaysimultaneously.
·Sensordiagnostics monitorglass breakage,sensorleaks,andRTD
condition.Diagnosticmessagesprovide acleardescriptionofany
problemwithno confusingerrorcodestolookup.Messagesarealso
includedfordiagnosing calibration problems.
·Quick andeasytwo-pointand samplecalibration methods.Toprovide
highaccuracy,all calibration methodsinclude stabilitymonitorsthatcheck
temperatureand mainparameterstabilitybeforeacceptingdata.

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·SelectablePt1000orPt100temperatureinputs.Systemscanalsobe
hard-configuredforthree-wireelements.Temperatureelementcan be
usercalibrated.
·Securitylock featuretopreventunauthorized tamperingwithtransmitter
settings.All settingscan be viewed whilelocked,buttheycannotbe
changed.
·Highreliability,microprocessor-basedsystemwithnon-volatilememory
back-up thatutilizesno batteries.Lowmass,surfacemountPCB
constructioncontainingno adjustmentpotentiometers.All factory
calibrationsstoredinnon-volatileEEPROM.
1.3Q45RSystemSpecifications
(Common toall variations)
Enclosure NEMA4X,polycarbonate, stainless steelhardware,
weatherproofandcorrosion resistant,
HWD:4.4”(112 mm)× 4.4”(112mm)×3.5”(89 mm)
Mounting Options Wall, panel, pipe/header.
Weight DC transmitterconfiguration:1lb.(0.45kg)
Line-powered unit:1.5lb.(0.68 kg)
Display Large,high-contrast,Super-Twist (STN)LCD;
4-digit maindisplaywithsign,0.75”(19.1mm) seven-
segmentcharacters;
12-digit secondarydisplay,0.3”(7.6mm) 5×7dotmatrix
characters
Keypad 4-keymembranetype withtactilefeedback, polycarbonate
withUV coating, integral EMI/staticshieldandconductively
coated window
Ambient Temperature Service, -20 to60°C(-4to140ºF)
Storage,-30to70°C (-22to158 ºF)
Ambient Humidity 0to95%,indoor/outdooruse,non-condensingtorated
ambienttemperaturerange
Altitude Upto2000m(6562 Ft.)
ElectricalCertification OrdinaryLocation,cCSAus (CSA and ULstandards -both
approved byCSA), pollution degree 2,installation category

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EMI/RFIInfluence Designed toEN 61326-1
OutputIsolation 600 Vgalvanicisolation
Filter Adjustable0-9.9minutesadditionaldamping to90%step
input
TemperatureInput SelectablePt1000 or Pt100 RTDwithautomatic
compensation
DisplayedParameters Maininput, -1000 to+2000 mV
Sensortemperature,-10.0to110.0°C (14 to230ºF)
Loop current, 4.00 to20.00 mA
Modelnumberand softwareversion
MainParameterRanges -1000 to+2000 mV
(NOTcommon to allvariations)
Standard 2-Wire(Loop-powered)Transmitter:
Power 16-35 VDC (2-wiredevice)
Enclosure: NEMA4X,polycarbonate, stainless steelhardware,
weatherproofandcorrosion resistant,
HWD:4.4”(112 mm)x4.4”(112mm)x3.5”(89 mm)
Mounting Options Wall orpipe mountbracketstandard.Bracketsuitablefor
either 1.5”or2”I.D. U-Boltsfor pipemounting.
Conduit Openings TwoPG-9openingswithgland seals
DC CableType Belden twisted-pair, shielded, 22gaugeor larger
Insertion Loss 16 VDC
12-24VC/115/230 VAC+Dual RelayOption:
Power 115/230 VAC ± 10%,50/60 Hz, 10 VA max
11-27 VDC,250 mAmax.
Enclosure,ACPowered NEMA4X,polycarbonate, stainless steelhardware,
weatherproofandcorrosion resistant,
HWD:4.9”(124 mm)x4.9”(124mm)x5.5”(139 mm)
Mounting Options Wall orpipe mountbracketstandard.Bracketsuitablefor
either 1.5”or2”I.D. U-Boltsfor pipemounting.

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Panelmountadapter optional.
Conduit Openings Three ½”NPTopenings.Gland sealssupplied but not
installed.
Relays, Electromechanical: TwoSPDT,6amp@250VAC, 5amp@24VDC
contacts.Softwareselection for setpoint, phase, delay,
deadband, hi-loalarm, and failsafe.A-Bindicatorson
mainLCD.
Analog Outputs Two4-20 mAoutputs.Outputone programmableforORP.
Output 2programmableforTemperatureorORP.Max
load 550 Ohmsfor each output.Outputsground isolated
and isolated from each other. Max. load foroutputson 12-
24 VDC powered unitsis400 ohms.
1.4Q45RPerformanceSpecifications
(Common toall variations)
InputImpedance Greaterthan1013 Ohms
Accuracy 0.1%of span or better(± 2mV)
Repeatability 0.1%of span or better(± 2mV)
Sensitivity 0.05%of span (± 2mV)
Stability 0.05%of span per 24hours,non-cumulative
(±1mV)
Warm-up Time 7secondstorated performance
SupplyVoltageEffects ± 0.05%span
InstrumentResponse Time 6secondsto90%of stepinput at lowest setting
TemperatureDrift Span or zero, 0.02%of span/°C
Max.Sensor-Instrument 3,000 ft.(914 meters) w/preamp,
Distance 30 ft.(9.1meters) w/opreamp
SensorTypes ModelQ25R ORP w/ preamp- 5wireinput, orcombination
styleORP electrode w/TC- 2wireinput
1.5General (Q25R,ORPSensor)
TheModelQ25RORPSensormeasurestheoxidation/reduction potential(also
knownasREDOX)ofaqueoussolutionsinindustrialandmunicipalprocess
applications.It isdesigned toperformintheharshestofenvironments,including
applicationsthatpoison conventionalORPsensors.All sealsaredualo-ring

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usingmultiplesealingmaterials.Thesensorisdesigned forusewiththe Q45R
Monitor/Analyzer.
1.6Sensor Features
·Ahighvolume,dualjunction saltbridgeisutilized tomaximizethe in-
servicelifetimeofthe sensor.The annularjunction providesalarge
surfacearea tominimizethe chanceoffouling.Largeelectrolytevolume
and dualreferencejunctionsminimizecontamination ofthe reference
solution. Thesaltbridgeisreplaceable.
·Thereferenceelementofthe sensorisaglass electrodeimmersed ina
referencebuffersolution.Thisglass referencesystemgreatlyincreases
the rangeofsensorapplications.
·An integralpreamplifierisencapsulatedinthe bodyofthesensor.This
createsalowimpedancesignaloutputwhichensuresstablereadingsin
noisyenvironmentsand increasesthe maximumpossibledistance
between sensorandtransmitterto3,000feet(914 meters).
·Systemdiagnostics warntheuserinthe eventofelectrode breakage,loss
ofsensorsealintegrityorintegraltemperatureelementfailure.
·Pt1000 RTD.Thetemperatureelementused inATIsensorsishighly
accurateandprovidesahighlylinearoutput.
·TheQ25Risfullysubmersible.
1.7Sensor Specifications
Measuring Range -1000 to+2000 mV
Sensitivity 0.2mV
Stability 2mVper24 hours,non-cumulative
WettedMaterials PEEK, ceramic,titanium, glass,Viton,EDPM
(optional: 316stainless steelwith316SS body)
TemperatureCompensation Pt1000 RTD
SensorCable 6Conductor(5areused)plus 2shields,
15 feet(4.6meters)standardlength
TemperatureRange -5to+95 °C(23to203 °F)
PressureRange 0to100 psig

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MaximumFlowRate 10 feet(3meters) per second
Max.Sensor-Analyzer3,000 feet(3meters)persecond
Distance
SensorBodyOptions 1” NPTconvertible, 1¼” insertion, 1½” or2”sanitary-style
Weight 1lb.(0.45kg)
Notes: 1.The type ofhardwareused tomountthe sensormaylimitthemaximumtemperature
and pressureratings.Please consultthe hardwaremanufacturer’sspecifications to
obtaintherelevanttemperatureandpressurerating information.
2.The maximumflowratespecification islowerforprocess solutions withlowionic
conductivityorhighsuspended solids concentration.Highflowrates inlowionic
conductivityprocesses maycause ameasurementerrordue tostaticelectrical
discharge.Highflowrates inprocesseswithhighsuspendedsolids concentration
maydecreasethefunctionallifeof thesensor byeroding themetalelectrode.
1.8ImportantNotes
Theglass electrode must bewetted atall timestoensureproper
functionality. Q25Rsensorsareshipped withafluid-filledcapoverthe
electrodetoenableimmediateuse(removecap beforeinstalling,savefor
storageandshippingpurposes).Electrodesthathavedriedoutforany
reason shouldbehydratedfor24hourstorestorefull functionality.
A platinummeasuringelectrodeisstandard. However, DO NOTuse
platinumelectrode inprocess applicationscontainingcadmium(Cd),
nickel(Ni),tin(Sn),orzinc(Zn).Agoldelectrode isavailableforthese
applications.
Likewise, DO NOTuseagoldelectrodeinprocess applicationscontaining
Cyanide (CN-).
NOTE:ThestandardQ25Rprocesselectrodeismadeofmetal
on glassand maybreak ifnothandledproperly. Shouldthe
electrodeeverbreak,USE CAUTIONwhenhandling thesensor
toavoidseriouscuts.

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Part 2–AnalyzerMounting
2.1General
All Q45 Seriesinstrumentsoffermaximummountingflexibility.Abracketis
includedwitheachunitthatallowsmountingtowallsorpipes.Inall cases,
choosealocation thatisreadilyaccessibleforcalibrations.Alsoconsiderthatit
maybe necessarytoutilizealocation wheresolutionscanbeused duringthe
calibration process.Totakefull advantageofthe highcontrastdisplay,mount
the instrumentinalocation wherethe displaycan be viewed fromvariousangles
and longdistances.
Locatethe instrumentincloseproximitytothe pointofsensorinstallation -this
will alloweasyaccess duringcalibration.ThestandardcablelengthoftheORP
sensoris15feet. Forsensorcableslongerthan 30 feet,usethe optional
junctionbox(07-0100)and sensorinterconnect cable(31-0057).
Due tothe flexibilityofthe instrumentdesign,someofthemountingfeatures
changebased on the configuration thatwasordered.Forexample,the2-wire
transmitterversion isdifferentfromthe115/230 VACcontrollerbecausetherear
oftheenclosureismuchdeeperwhen theACpowered unitisused.Inaddition,
the ACpowered unithasan integratedpanelmountflangerequiringasingle
cutoutforflushmounting.RefertoFigure1andFigure2fordetailed dimensions
ofeachtype ofsystem.

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Figure 1 -Q45 EnclosureDimAC Pwrunits
ENTER
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Figure 2 -Q45 EnclosureDim2-Wire& Batt units
1" NPT
1.23
(31.2)
.82
(20.8)
BOTTOM VIEW
3.45
(87.6)
1.68
(42.7)
SIDE VIEW
4.38
(111.2)
4.38
(111.2)
ENTER
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ESC
FRONTVIEW
2.61
(66.3)
2.61
(66.3)
#10-32 UNF
(4PLACES)
BACK VIEW
PG-9PORT
(2PLACES)
1.23
(31.2)
BOTTOM VIEW

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2.2Wallor PipeMount
APVCmountingbracketwithattachmentscrewsissuppliedwitheach
transmitter(seeFigure3fordimensions).Themulti-purposebracketisattached
tothe rearoftheenclosureusingthe fourflathead screws.The instrumentis
then attachedtothewall using the fouroutermountingholesinthe bracket.
Theseholesareslottedtoaccommodatetwosizesofu-boltthatmaybe used to
pipe mountthe unit.Slotswill accommodateu-boltsdesigned for1½“or2”pipe.
Theactualcentertocenterdimensionsforthe u-boltsareshowninthe drawing.
Notethattheseslotsareforu-boltswith¼-20 threads.The1½” pipe u-bolt(2”
I.D.clearance)isavailablefromATIintype 304 stainlesssteelunderpart
number(47-0005)
Figure 3 -Wall orPipe mount Bracket

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Figure 4 -WallMounting Diagram
Figure 5 -PipeMounting Diagram
ENTER
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ENTER
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2.3Panel Mount,ACPoweredMonitor
PanelmountingofanACpowered monitorusesthe panelmountingflange
molded intothe rearsection ofthe enclosure.Figure6providesdimensionsfor
the panelcutout required formounting.
Thepanelmountingbracketkitmustbe ordered separately(partnumber05-
0068).Thiskitcontainsametalretainerbracketthatattachestothe rearofthe
enclosure,4screwsforattachmentofthisbracket, and asealinggaskettoinsure
thatthe panelmountedmonitorprovidesawatertightsealwhen mountedtoa
panel.
Thesealinggasketmustfirstbe attached tothe enclosure.The gasketcontains
an adhesiveononeside sothatitremainsinplaceon theenclosure.Remove
the protectivepaperfromtheadhesiveside ofthegasketand slide the gasket
overthe back oftheenclosuresothattheadhesiveside linesupwiththebackof
the enclosureflange.Onceinplace,you can proceed tomountthe monitorin
the panel.
Figure 6 -PanelMount / Cut-out Diagram
ENTER
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Part 3–Sensor/Flowcell Mounting
3.1General
TheQ25RORPSensorisdesigned forindustrialand municipalprocess
applications. Mountingoptionsinclude flow-through, submersion, insertion
(specialhardwarerequired), orsanitarymount dependingon thetype ofsensor
purchased.Thesensor-to-analyzerdistancemaybe extendedupto3000feet
withthe useofajunction boxand suitablecable.
Calibratethe sensorbeforeplacingit intothe process.SeePart 6ofthismanual
fordetailed calibrationinstructions.
Q25RDifferentialORPSensorsareavailablein4different versionsasshownin
Figure7. Theconvertiblestyleisthemost common andcanbeusedforeither
flow-throughorsubmersion applications.A convertiblesensorwithaquick-
disconnect receptacleisavailableforapplicationswheretheoperating
environment isrelativelyclean anddry. Thisversion maynotbe submergedand
shouldnotbeusedinunprotectedoutdoorlocations.Forspecialapplications,
the Q25Risalsoavailableinastainless steelbodiedversion forinsertion type
installations, orcan be suppliedineither1.5”or2”sanitaryversions.

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Figure 7 -Q25 SensorTypes

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3.2FlowTee Mounting
Convertiblesensorsmaybe used ina1”flowtee asshowninFigure8.Theflow
tee isamodified pipe fittingthataccommodatesthepipe thread onthe frontof
the sensor.Samplemustflowdirectlyagainstthefaceofthe sensorasshown.
Thesensormaybe mounted horizontallyprovided thatthe outletflowispointed
up toavoid“air locking”inthetee.Notethatstandard1”teefittingswill notwork
without modificationduetoclearanceproblemsinmostmolded tees.
Figure 8 -Flow Through Tee Mount