Instruction Manual Anderson Instrument Co. Inc.156 Auriesville RoadFultonville, NY 12072 www.anderson-negele.com
Instrument Model Number ________________________________
Instrument Serial Number _________________________________
T-Series "SMART"Sanitary Pressure Transmitter
Form Number AIC3708© April 1996Revised: January 2014Supersedes: July 2012
Table of Contents PageSection 1 - Introduction 4 1.1 SPECIFICATIONS 51.2 DIMENSIONS 6
Section 2 - Theory of Operation 7
Section 3 - Installation 7
Section 4 - Sensor Wiring 8
Section 5 - Instrument Wiring 95.1 LOOP POWER 9
Section 6 - Liquid Crystal Display 10 6.1 LCD INSTALLATION 10
Section 7 - Maintenance 11
Section 8 - Calibration 118.1 CALIBRATION OF TRANSMITTER 118.2 CALIBRATION OF LCD DISPLAY 12
Section 9 - Troubleshooting 149.1 VOLTAGE CHECK 149.2 CURRENT CHECK 149.3 MISCELLANEOUS TROUBLESHOOTING 14
Section 10 - Warranty and Return Statement 16
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Section 1 IntroductionThis manual is provided to assist the user in installing, operating and maintaining the Anderson “T” Series transmitter. The “T” is a one-piece sanitary transmitter with digital communications capabilities. This digital communications capability is the feature which separates traditional analog transmitters from the new “SMART” devices which are becoming more popular for process monitoring and control. For more information on “SMART” and what it means to you, read the following:
Product Description: What is an Anderson “SMART Transmitter?An Anderson “T” Series transmitter is a second generation product developed on the proven RSP/RSV design platform. As such, it provides the user with an analog, 4-20 mA transmitter specifically designed to withstand the high ambient moisture, high vibration applications typical of Sanitary fluid processes. We’ve added a microprocessor‑based circuit to enhance performance and provide local/remote communication capabilities. Customers benefit by being able to simplify specification, installation, start‑up, and maintenance of their transmitters. We’ve chosen the “HART” protocol because of it’s broad acceptance in our core markets, and the flexibility and ease of use it provides our customers. HART stands for “Highway Addressable Remote Transducer”.
How do I communicate with the “SMART” Transmitter? Communication is accomplished via a “HART” Hand‑Held Terminal (HHT). The most current model the 275, was used in development of the “T” Series and will provide optimum performance and flexibility. Optionally, communication is possible via a P.C. interface.
Where do I connect the HHT in order to “talk” with my transmitter? At any point where the signal leads from the transmitter are accessible. This could be at the transmitter itself, or at any connection point in the 4-20 mA loop.
What happens to the integrity of my 4‑20mA signal while I’m connected via the HHT? A distinct advantage to the HART protocol is the isolation between digital and analog signals. The 4‑20 analog output remains intact while the HHT is connected!
What real life benefits will I realize by utilizing the “T” Series “SMART” transmitter? In general, SMART transmitters offer immediate performance enhancements over their analog counterparts. Initial costs are slightly higher but this is countered by the time savings realized during commissioning and subsequent calibrations. With the Anderson “T” Series specifically, the calibration menu has been enhanced to provide direct access to the transmitter span adjustment. This allows the unit to be zero adjusted before installation and spanned on the process line, something competitive units can’t do. Also, Anderson’s HART protocol was developed as a universal set of menu’s, applicable to all pressure, temperature and level transmitters. This will insure that future product offerings will all communicate via one, common HHT.
PAGE 51.1 SPECIFICATIONSRanges: DefinedbyUpperRangeLimit(URL)
Rangeability(Turn-down): 10:1viaanyHARTHostDevice
OverPressureLimit: 2XURL
MechanicalTrimAdjustments: Internallyadjustable±5%ofspan(zero);±20%ofspan(span)
Output: 4-20mA,Two-wire,Linear,DigitalProcessvariablesuperimposedon4-20mAsignal,availabletoany"HART"protocolconforminghost.
PowerSupply: 13-40volts,D.C. 18-45volts,D.C.withdisplay
Indication: Optional,cap-mounted,LCD Indicationaccuracy±1%F.S.
TemperatureLimits(Process): Standard/DirectMount:0to275°F(-18to135°C) HighTemp/DirectMount:0to350°F(-18to177°C)** HighTemp/RemoteMount0to400°F(-18to204°C)**
HazardousLocationsCompliance: MODELTPPONLY:ULCompliancewithClass1,Div.1,GroupsAthruDforintrinsicallysafeapparatus,whenconnectedwithapprovedbarriersystem(Seeinstructionmanual).
ProcessTemperatureEffect: Lessthan0.2%offullscaleoutput/10°Fchange.
PerformanceSpecifications:
Accuracy*(psigranges): ±0.2%ofURL(psia,compoundvacuum): ±0.3%ofURL *Accuracyincludesrepeatability,hysteresisandlinearity.
Repeatability: ±0.06%
Hysteresis: ±0.07%
Linearity(BFSL): ±0.07% (±0.17%forpsia,compound&vacuumranges)
Stability: ±0.3%ofURL/6months
PhysicalSpecifications:
WettedMaterial: 316LStainlessSteel,Hastelloy"C"optional
WettedMaterialSurfaceFinish: MODELTPP:Ramax=8microinches(.2microns)andelectropolished
MODELTFP:Ramax=25microinches(.6microns)
HousingMaterial: 304StainlessSteel
ActuatingFill: 100%mineraloil.MeetsFDArequirements (21CFR,172.878and178.3620(a))
ElectricalConnections: 1/2-14NPTconduitwithscrewterminalsandintegraltestloopsforHARTinterface
** Processvacuumsinexcessof24"Hgmayrequireslightde-ratingofmaximumtemperature(consultfactory).
PAGE 61.2 DIMENSIONS
Figure 1 - Standard Direct-Mount
Figure 2 - High Temperature Direct-Mount
Figure 3 - High Temperature Remote-Mount
PAGE 7
Section 2 Theory of OperationThetransmitterutilizesasanitarydiaphragmtotransmitpressuretoanelectronictransducer.Theoutputofthistransducerismonitoredbyanon-boardmicroprocessorwhichcontrolsthesignalleveloftheanalog,4-20mA,output.Themicro-processoralsoallowsforremotecommunicationwhichcanbeusedincalibration,re-ranging,datastorage,andtroubleshootingthetransmitter.Theanalogoutputremainsinterruptedduringcommunicationandassuchcanbeusedasaninputtoarecorder,controller,digitalindicator,orPLC.
Section 3 InstallationThetransmittershouldbelocatedontheprocessorequipmentsuchthatthehousingisprotectedfromphysicalabuse.Donotselectalocationwheretheunitcanbestruckbymobileequipment,forklifts,etc.Thehousingshouldbeorientedsuchthattheoptionaldigitaldisplayisvisibletotheoperator.Ahorizontalorientationmaybeoptimumforviewingandalsopreferrediftheprocesstemperaturewillexceed275°F(135°C).
Precautionsshouldbetakentoinsurethatthehousinginternalsarenotexposedtowater,watervapor,orothermoisture.Experiencehasshownthatflexibleconduitsdonotnecessarilyprecludewaterformenteringsensorhousings.Condensationiscommonwithintheconduitandmustbekeptfrommigratingintothesensor.Note:Theinstallerassumesresponsibilityforpreventingmoisturefromenteringthesensorhousing.
Ifmountedhorizontally,theconduitfittingshouldpointdownward.Thepreferredmethodforconnectingthesensoristoutilizethewatertightconnectorprovidedtoprovedasealagainstthecable.Rigidorflexconduitshouldbeterminatedjustshortofthesensorhousingsealedaswelltopreventwaterfrommigratingintotheconduit.Thismethodprovidesprotectionforthecabling,whileisolatingthesensorfromwaterthatinevitablyfindsit’swayintoconduitruns
Figure 4 - High Temperature Remote Mounting Diagrams
VERTICAL PIPE MOUNTING
HORIZONTAL PIPE MOUNTING
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Section 4 Sensor WiringAndersonrecommendsacableof24gauge,4conductor,shielded(Belden#9534)orequivalent.Fourconductorcableisutilizedbecauseofitsroundness,whichprovidesasuitablesealwhenusedwithseal-tightconnectors,strainreliefsandrubbergrommets.Irregularshapedcabledoesnotallowforawatertightseal.
Ifutilizingcustomersuppliedcable,selectaroundcablewith22-24AWGwireandashield.InorderfortheAndersonprovidedseal-tightconnectortosealonthecable,theO.D.ofthecablemustbebetween3/16"and1/4".Ifsmallercableisutilized,adifferentneoprenebushingmustbeused(mustbecustomersupplied).
Ifanalternateseal-tighttypeconnectorisgoingtobeused,beabsolutelycertainthattherubberbushingwilladequatelysealonthecable.Donotuseaconnectorintendedforpowercable(largeinsidediameter)ifthesensorcableisonly1/4".BesuretouseTeflonthreadtapewhenattachingthenewseal-tightconnector.
Wiringtotheconduithousingsensorsisaccomplishedasfollows:
1. Removethehousingcaptoexposethewiringterminalblock.
2. Insertthecablethroughtheseal-tightconnector,strippingbackapproximately2inchesofsheathingtoexposethewires.
3. Twowireswillbeutilizedforconnectionsatthetransmitterendoftheloop.NormalcolorcodesbeingRED(Loop+)andBLACK(Loop-).Trimoffallunusedwires,includingthebareshieldgroundwire.TopreventaGROUNDLOOPcondition,besuretheshieldmaterialandtheshieldgroundwiredonottouchthesensorhousing.Useaninsulatorsuchaselectricaltapeorheatshrinktubingifnecessary.
4. Stripthetipsoftheremainingwiresbackapproximately3/8ofaninchandtwiststrands(tinningishighlyrecommended).
5. UsingFigure5,maketheproperconnectionstothewiringterminalstrip(locatedinsidetheconduithousing)
Figure 5 - Wiring Terminal Connections
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Section 5 Instrument WiringWiththeproperwiringconnectionsmadeatthesenorendoftheloop,itisnowtimetomakefinalconnectionsattheinstrumentendoftheloop.ThetransmittermayfeedinstrumentssuchasAndersondigitaldisplays,microprocessorbasedcontrollers,chartrecorders,orcustomersuppliedinstrumentation,orPLUS.
5.1 LOOP POWER
TheAndersonSMARTTransmitterrequireslooppowerforoperation.Ratingsareasfollows:
Standard“T”Transmitter: 12-40VDC(Absolute),24VDCNominal,regulatedorunregulated
“T”TransmitterwithLCDDisplay: 16-40VDC(Absolute),24VDCNominal,regulatedorunregulated
Asinherentresistanceassociatedwithcablelengthandsignalreceiverinputmayaffectoperationofthetransmitter,Figure6showssomeguidelinesforlooppowerrequired.
NOTE:Aminimumloopresistanceof250ohmsisrequiredwhencommunicatingwiththetransmitter.Thisinturnrequiresthatthepowersupplyberatedatminimum17voltsfornonindicatingtransmittersand21voltsifanLCDdisplayissuppliedwiththeunit.Theformulasforcalculatingmaximumloopresistanceforanyratedpowersupplyareasfollows:
Ramax(WithoutLCD)_(Vsupply-12)x50
Ramax(WithLCD)=(Vsupply-16)x50
Figure 6 - Loop Power Guidelines
Pleaseconsultwiththeinstallation/servicemanualthatwasprovidedwithyourreceiverforspecificwiringinstructions.MostAndersonreceiver(displays,chartrecorders,etc.)arecapableofsupplyinglooppower.Typicalwiringwouldbeasshownonfollowingpage.
TOTALLOOP
RESISTANCE (OHMS.)
LOOP POWER SUPPLY(D.C. VOLTS)
A = TRANSMITTER ONLY - NO LCD DISPLAY OR COMMUNICATIONSB = TRANSMITTER WITH OR WITHOUT LCD DISPLAY (NO COMMUNICATIONS)C = TRANSMITTER WITH COMMUNICATIONS
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Section 6 Liquid Crystal DisplayThe“T”transmitterisavailablefromthefactory,orfieldupgradeable,withanintegralLCDprocessdisplay.Thedisplayissuppliedfromthefactorypre-calibratedtothespecifiedparameters.
NOTE:Althoughre-calibrationmaybeperformed,noalterationtothedecimalpointlocationmaybemade-thisisafactorysetfunction.
6.1 LCD INSTALLATION
InstallationofanLCDProcessDisplayintoanalreadyexistingtransmitterisasfollows:
1. Topreventpossibledamagetothetransmitterorreceiver,itisrecommendedthatallpowerbedisconnectedbeforeproceeding.
2. Removetheconduitcapfromthesensor.Ifupgradingatransmitterinthefield,youwillbesuppliedwithanewconduitcap(holeincenter).
3. TotheleftofthewiringterminalblockwillbeasmallYELLOWwireloop.Ithasanarrowpointingtoitstating“WITHDISPLAYCUT”.Cutthisloop,makingsurethetwoendsdon’tcomeincontactwitheachotheroranythingelse.
4. InserttheLCDREDwireintothe(DISP+)terminalandtighten.
5. InserttheLCDBLACKwireintothe(DISP-)terminalandtighten.
6. SlidetheLCDdisplayintotheendoftheconduithousing,orientingforproperposition.
Figure 7 - Loop Diagram
TOTAL LOOP RESISTANCE
250 OHMS. MINUMUMFOR COMMUNICATION AMMETER
(4-20 mA dc)
SHIELDGROUND
(ONE POINT ONLY)
SIGNALRECEIVERINPUT
POWERSUPPLY
PER SPECS
HANDHELD
TERMINAL
OPTIONALLOOP -BLACK (-)
LOOP +RED (+)
PAGE 117. Securethenewcapprovided.
8. Applypowertothesystem.
9. Atthispoint,checktobesureyouaregettingaproperreadingIfthedisplayisnotactive,immediatelypowerdowntheloopandcheckyouconnections.Ifyoufeelthedisplayisnotreadingproperly,itmaybenecessarytoperformcalibrationtothetransmitter.RefertoSection8-Calibration.
Section 7 MaintenanceAndersonelectronicsensorsrequireverylittlemaintenance,ifany.Wesuggestthatthesensorbeinspectedat6monthintervalstoensurethattheyarenotbeingphysicallyabused,moistureisnotenteringthehousing,andthatthewiringissound.Calibrationmaybechecked,asrequiredbySOP’s,orwhenerrorsaresuspected.
Section 8 Calibration
Ifyoufeelthattheoutputofthetransmitterisnotcorrect,calibrationoftheunitmayberequired.Thismaybeaccomplishedbyfollowingtheprocedurebelow,orviathe“HART”HHTasoutlinedintheSMARTINTERFACEManual.Section8.1ofthismanualillustratestheproceduresforcalibrationofthetransmitter,withsection8.2coveringcalibrationoftheLCDdisplay.
Equipmentrequired:PressuresourceAccuratereferencegaugeDCMilliampMeter(accurateto.01mA)SmallstraightbladescrewdriverCalculatormASignalgenerator(helpfulforLCDcalibration)
8.1 CALIBRATION -TRANSMITTER
Adjustmentstothetransmitteraremadeviathe“ZERO”and“SPAN”potentiometers.Thesetwoadjustmentsarenon-interactive,meaningchangingthezerowillnotchangethespan.Asgeneralmaintenancetotheunit,azerocheckisrecommendedatapproximately6monthintervals.Ifyourunitiscalibratedatacompoundrange,youwillnotsee4.00mAatatmosphericzero.Asreference,youmayusethefollowingcharttodetermineifyourunitmayrequirecalibration(mostcommonrangesareshown).
NOTE:UsethisprocedureONLYifthe“HART”digitalcommunicationswillriotbeutilizedforcalibration.
SensorRange SensorReadsatAtmosphericZero0-psig-PositivePressure 4.00mA 0psig-30"Hg 4:00mA 30"Hg-15psig 11.92mA 30"Hg-30psig 9.26mA 30"Hg-60psig 7.15mA 30"Hg-100psig 6.05mA
PAGE 12Theoutputofaproperlycalibratedtransmittermaybecalculatedbyusingthefollowingformula:
mAOutput=16X (KNOWNVALUE-LOWENDOFRANGE)+4 TRANSMITTERSPANNOTE:Thetransmittershouldbewiredinacompleteloopatthispoint,oronatestbenchandconfiguredperthediagramshowninFigure7,page10.Althoughnointeractionbetweenzeroandspanoccurs,whenmakingadjustmentsyoushouldbeasclosetothetopandbottomtransmitterrangeaspossible.Thiswillensurethebestpossiblelinearityinthefinalsignaloutput.
1. Exposethetransmittertoaknownzeroreferencepoint.Iftransmitterrangestartsatatmosphericzero,zeroadjustatatmosphericzero.Iftransmitterisacompoundrange,youshouldbeasclosetosensorzeroaspossible.YoumustcalculatetheexpectedmAsignal(useformulaprovedatstartofthissection).
2. Removecapfromtransmitter.
3. WithyourmetersettoDCmA,connecttheRED(Meter+)leadtothe(DISP+)terminal.ConnecttheBLACK(Meter-)leadtothe(DISP-)terminal.
4. DONOTUSETHELCDTOMAKEINITIALSENSORADJUSTMENTS.IftheLCDisnotincalibration,anerrorwillresultinthecalibrationofthetransmitter.TheLCDshouldbecalibratedseparately.SeeSection8.2,page12forproperprocedures.
5. AdjustthetransmitterZEROpotentiometerasshowninFigure2,page6,untilyoueithersee4.00mAifyouareatatmosphericzero,oryourexpectedmAsignalforacompoundrange.
6. Exposethetransmittertoaknowprocessvariablenearthetopendoftherange.
7. Again,usingtheformulaprovided,calculatethemAreadingexpected8. AdjustthetransmitterSPANpotentiometer,showninFigure5,page8,untilyouseeyour
expectedmAoutput.
NOTE:Forpressuretransmitterswithcompoundranges,therangesmustfirstbeconvertedtoallonetypeunitofmeasure.Forexample,a30"Hg-0-30psigunitmaybeconsideredtohavearangeof-14.7psigto30psigforaspanof44.7psig(2.036"Hg-1psi).Becarefulnottolosethe-signwhileperformingthecalculationoftheproperreading.
8.2 CALIBRATION OF LCD DISPLAY
NOTE:BesurethetransmitterisincalibrationbeforeattemptingtoadjusttheLCDdisplay.TheLCDreadingisbasedonmAoutputfromthetransmitter.Therefore,ifthetransmitterisoutofcalibration,thiserrorwillbereflectedintheLCDreading.
ToperformcalibrationoftheLCDdisplay,youmustfirstdeterminetheZeroandSpan.Thisinformationisonastickerlocatedonthebackofthedisplay.AdjustmentsaremadeviaZeroandSpanpotentiometers,seeFigure5forlocation.YoumayuseeithertheHTtransmitteritselftoperformcalibrationofthedisplay,ora4-20mAsignalsimulator.
PAGE 13
CALIBRATIONOFLCDUSING4-20mASimulator
1. DisconnectheLCDdisplayfromthetransmitterbyremovingtheREDandBLACKwiresfromtheirrespectiveterminals.
2. AttachthePOSITIVEleadofthesimulatortotheREDleadoftheLCDdisplay,andtheNEGATIVEleadofthesimulatortotheBLACKleadoftheLCDdisplay.
3. ThesimulatorshouldbesettoPOWEREDoutputmodesothatlooppowerissupplied.Ifyoursimulatorisnotcapableofthisfunction,wiretow9VDCbatteriesinserieswiththe4-20mAsimulator,andtheLCDdisplay.
4. Apply4.00mAtotheLCDdisplay.
5. AdjusttheZEROpotentiometeruntilheLCDmatchestherangeindicatedonthestickerinthespotlabeledZEROCALIBRATION.
6. Apply20.00mAtotheLCDdisplay.
7. AdjusttheSPANpotentiometeruntiltheheLCDmatchestherangeindicatedonthestickerinthespotlabeledSPANCALIBRATION.
8. TheLCDdisplayisnowproperlycalibrated.Re-wirethetransmitteratthistime:
CALIBRATIONOFLCDUSINGTRANSMITTER/PROCESS
1. Tocompletethiscalibration,youmusthaveapressuresourceandaknownaccuratereference.ATthispointyouMUSTbecertainthatthetransmitterisinpropercalibration.Ifnecessary,startwithsection8.1-TransmitterCalibration,page11.
2. ExposethetransmittertoaknowpressureneartheLOWendofthecalibratedrange.
3. AdjustthepotentiometeronthebackoftheLCDdisplaylabeledZEROuntilthedisplaymatchesyourknowreference
4. ExposethetransmittertoaknownpressureneartheHIGHendofthecalibratedrange.
5. AdjustthepotentiometeronthebackoftheLCDdisplaylabeledSPANuntilthedisplaymatchesyourknowreference
6. TheLCDdisplayisnowproperlycalibrated.
PAGE 14
Section 9 Troubleshooting9.1 VOLTAGE CHECK
UsingadigitalmultimeterontheDCvoltsscaleandwiththesensorconnectedtothereceiver,confirmthatthesensorisbeingprovidedthecorrectlooppower.PlacetheRED(Meter+)leadonthe(Loop+)terminal,andtheBLACK(Meter-)leadonthe(Loop-)terminal.Youshouldseebetween12-40VDCforastandardtransmitter,andbetween16-45VDCifyouhaveanoptionalLCDdisplayinstalled.
9.2 CURRENT CHECK
TocheckthemAloop,besurethesensorisconnectedtothereceiver.Openthecaponthetransmittertoexposethewiringterminals.UsingadigitalmultimeteronthemADCscale,connecttheRED(Meter+)leadtothe(DISP+)terminalandtheBLACK(Meter-)leadtothe(DISP-)terminal.YouwillbereadingthemAcurrentloop.Ahighcurrentflow,approaching30mA,indicatesaproblemwiththetransmitter(internalsource).Ifnocurrentflowisobservedthisindicateseitheranopenlooporaproblemwiththetransmitter.Tocheckatransmitterataknowpressure,refertotheCalibrationsectionforinformationonhowtoproperlycalculatethemAoutputattheknownvalue.
9.3 MISCELLANEOUS TROUBLESHOOTING
Symptom ActionNodisplayonreceiver •Checkloopforbrokenwire •Checkreceiverforpowerout(looppower)
Displayonreceiverreadingimproperly •Performcalibrationcheckontransmitter •Performcalibrationcheckonsignalreceiver
TransmitternotoperatingafterLCD •Placeawirejumperfrom(DISP+)terminalto removed(DISP-)terminal
WhentestingLoop,NOcurrentflow •Checkforbrokenconnectionsdetected •Checkloopwiring(incorrectpolarityaffects
FeelfreetocontactAndersonTechnicalServicesDepartmentat1-800-833-0081forfurtherassistancewithtroubleshooting.
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Warranty and Return StatementTheseproductsaresoldbyTheAndersonInstrumentCompany(Anderson)underthewarrantiessetforthinthefollowingparagraphs.Suchwarrantiesareextendedonlywithrespecttoapurchaseoftheseproducts,asnewmerchandise,directlyfromAndersonorfromanAndersondistributor,representativeorreseller,andareextendedonlytothefirstbuyerthereofwhopurchasesthemotherthanforthepurposeofresale.
Warranty
TheseproductsarewarrantedtobefreefromfunctionaldefectsinmaterialsandworkmanshipatthetimetheproductsleavetheAndersonfactoryandtoconformatthattimetothespecificationssetforthintherelevantAndersoninstructionmanualormanuals,sheetorsheets,forsuchproductsforaperiodoftwoyears.
THERE ARE NO EXPRESSED OR IMPLIED WARRANTIES WHICH EXTEND BEYOND THE WARRANTIES HEREIN AND ABOVE SET FORTH. ANDERSON MAKES NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE PRODUCTS.
Limitations
Andersonshallnotbeliableforanyincidentaldamages,consequentialdamages,specialdamages,oranyotherdamages,costsorexpensesexceptingonlythecostorexpenseofrepairorreplacementasdescribedabove.
ProductsmustbeinstalledandmaintainedinaccordancewithAndersoninstructions.Usersareresponsibleforthesuitabilityoftheproductstotheirapplication.Thereisnowarrantyagainstdamageresultingfromcorrosion,misapplication,improperspecificationsorotheroperatingconditionbeyondourcontrol.Claimsagainstcarriersfordamageintransitmustbefiledbythebuyer.
Thiswarrantyisvoidifthepurchaserusesnon-factoryapprovedreplacementpartsandsuppliesorifthepurchaserattemptstorepairtheproductthemselvesorthroughathirdpartywithoutAndersonauthorization.
Returns
Anderson’ssoleandexclusiveobligationandbuyer’ssoleandexclusiveremedyundertheabovewarrantyislimitedtorepairingorreplacing(atAnderson’soption),freeofcharge,theproductswhicharereportedinwritingtoAndersonatitsmainofficeindicatedbelow.
Andersonistobeadvisedofreturnrequestsduringnormalbusinesshoursandsuchreturnsaretoincludeastatementoftheobserveddeficiency.Thebuyershallpre-payshippingchargesforproductsreturnedandAndersonoritsrepresentativeshallpayforthereturnoftheproductstothebuyer.
Approvedreturnsshouldbesentto: ANDERSONINSTRUMENTCOMPANYINC. 156AURIESVILLEROAD FULTONVILLE,NY12072USA ATT:REPAIRDEPARTMENT
Section 10