WATANABE ELECTRIC INDUSTRY AT-501 User manual

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(1)Ifvoltageorcurrentexceedingtheallowablemaximumvoltage
orcurrentisappliedtotheinputterminals,theconverter
maybedamaged.
(2)Applypowerwithintheapplicablerangeoftheconverter.
  Otherwisefire,electricshockormeterdamagemayresult.
(3)Thecontentsofthisinstructionmanualmaysubjecttochange
withoutpriornotice.
(4)Thisinstructionmanualiscarefullyprepared.However,ifany
mistakeoromissionisfound,contactyournearestWatanabe
salesagentorWatanabedirectly.
(5)Keepthismanualavailableeasilyanytime.
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１.Introduction
ThankyouforpurchasingourAT-501digitalthermometer.
Althoughthismeterismanufacuturedunderstrictqualitycontrol,
priortousingit,checkittomakesurethatithasnotbeendamaged
duringtransportationand/ortherarenomistakesinthe
specifications.
Ifthereareanydiscrepanciesinthequalityandspecification,
contactusortheWatanabeagentwhichyoupurchasedit.
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２.Specifications
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●TCType（Thermocouple）
Model＆
code Input Sensor
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Measuring
range Resolution
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Accuracy
(23℃±5℃)
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AT-501□-KC
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K 0℃to＋1000℃
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1℃ ±0.8%ofFS
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AT-501□-JC
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J 0℃to＋400℃
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1℃ ±0.8%ofFS
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●RTDType（ResistanceTemperatureDetector）
Model＆
code Input Sensor
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Measuring
range Resolution
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Accuracy
(23℃±5℃)
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AT-501□-PA
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Jpr-100
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Pt-100
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−100.0℃to
＋199.9℃ 0.1℃ ±0.2%ofFS
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AT-501□-PJ
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Jpr-100
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Pt-100
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−200℃to
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＋600℃ 1℃ ±0.4%ofFS
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●ModelConfiguration
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●GeneralSpecifion
OperationMethod ：Doubleintegral
InputCircuit ：Single-ended
SmplingSpeed ：2.5times／sec
NoiseRejectionRatio ：NMR40dB(TYP)
Display ：LEDnumericdisplay,height-14.2mm
 RedorGreen
PolarityDisplay ：“−”isdisplayedautomaticallyat
minustemperature
OperatingTemperature
Range ：0to50℃,35to85%RH (Nodew-Condense)
Storagetemperature ：-10℃to+70℃ Lessthan60%RH
Powersupply/
PowerConsumption ：12to24VDC±10%  Approx.37mA(TYP)(at24VDC)
Dimentions ：96mm(W)×48mm(H)×22mm(D) DINsize
Weight ：Approx60g
Dielectricstrenght ：1min.at500VDC
Between input(A,B,COM)/power
supplyterminal0V
Insulationresistance
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：Morethan100MΩat500VDCbetween
eachterminaldescribedabove.
Accessory ：Instructionmanual
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●ThermocoupleTypeSpecification
InputSensor ：TypeKorJ
Temperaturedisplay ：℃
Resolution ：1℃
ExternalResistance ：Lessthan100Ω
ColdJunction
CompensationAccuracy ：±2℃(10to40℃)
BurnoutAlarm ：”−1999”(Ktype)or
“−999”(Jtype)flashes
ExcessInputVoltage ：±5VDC
Temperature
Coefficient ：200ppm/℃ofFS(Ktype)  300ppm/℃ofFS(Jtype)
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●RTDTypeSpecifications
InputSensor ：Pt100(JPt100)
Temperaturedisplay ：℃
Resolution ：0.1℃ or1℃
ExternalResistance ：Lessthan1Ω/lead
Linearizer ：Analoglinearizer
Temperaturecoefficient ：200ppm/℃
Resistancecurrent ：1mA(TYP)
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３.Handling
3-1PreparationRequiredtoOperationandGeneralCaution
1)Usethismeteratambienttemperaturesofbetween0℃to50℃
andinhumidityofupto85%.Donotexposethemetertodew
condensation.
2)Usethemeteronlywherwtherwisnodustorchemicalsandgases
harmfultoelectricalcomponentsandparts.
3)Donotsubjectthemetertovibrationandshock.
 4）Noise
  a)PowerCircuit
   Asitisverydifficulttobuiltacompletenoiserejection
cirucuitintoasmalldevicesuchasthismeter,useasurge
absorptioncirucuitsuchasanexternallinefilter,varistor
ortoproventexcesssurgewhenitinthesamepowerlineas
magnetswitchesand/orwherelighteningoccursfrequently.
  ｂ)Shield
   Whennoisecausesaproblem,connectthe0Vterminaltothe
earthoranequipmentgroundingterminal.Ifairinduction
causesaproblem,enclosethemoldedmainframecaseinametal
case.
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3-2Mounting
 1)PanelMounting
MakeacutoutonthepanelasspecifiedinFig.1andinsertthemeter
intothecutoutfromthefrontsideofthepanel.
（Mekethepanelthickness1.0to3.2mm）
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2)PullingOuttheInternalAssembly
   Insertascrewdriverintoeachoftheholesonbothsidesto
forceoutthefrontpanel.Gentlymovethecaseupanddown
andthenslowlyremovetheinternalassembly.
DIGITALTHERMOMETER
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INSTRUTIONMANUAL
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MODELAT-501
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Caution
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WATANABEELECTRICINDUSTRYCO.,LTD.

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3-3TerminalConnection
●Input/OutputScrewTerminal
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 1)Powerconnection：POWER
Connectthepower(12to24VDC)to“POWER”ontheinput/output
terminalboard.
Sincethismeterisnotprovidewithapowerswitch,itisready
tooperateassoonasitisconnectedtothepowersupply.
 2)Measured-InputTerminalConnection
  ●ThermocoupleType
   Ⅰ)Connectthethermocouple＋legtoAontheterminal,and
thethemcouple−legtoBonthesameterminal.
Ⅱ)Whencompensationwireswithshieldareused,connect
theshieldtoC(COM)ontheterminal.
   Ⅲ)Neverapplyvoltagebeyondanallowablemaximumvoltage
totheinput(terminalsA,BandCOM)
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●RTDType
 Ⅰ)Connect3-wiresystemPt100ΩtoA,B,COMterminals.
 Ⅱ)Forthe2-wiresystemshorttheterminalsBandCOM.
 Ⅲ)NeverapplyinputotherthantheRTDtotheinputterminals.
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４.Maintenanceandinspection
4-1Cautionformaintenance
   Storethemeteratastoragetemperatureof−10℃to70℃
andarelativehumidityoflessthan60%.
Ifthemeterisusedatadustylocation,occasionallyremove
theinternalboardfromthecase,thenremovedustaccumulated
ontheboard.
(Otherwiseariseintemperaturesofinternalpartsmayshorten
amaterservicelife.)
Asthecaseandpanelaremoldedbyplastics,donotremove
stainsfromthemwithavolatileliquidsuchasthinner.
 4-2Calibration
  Inordertoassuretheinitialaccouracyforalongperiodof
time,calibratethemeterperiodicallyatanambient
temperatureof23℃±5℃andahumidityof35to85%RH.
Ifthemeterisoutofthespecifiedaccuracyasaresultof
calibration,contactus.
●ThermocoupleType
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◎Conductcalibrationinthefollowingorderat23℃±5℃
 (1)Removethefrontpanelofthismeter
 (2)First,turnthepowerONwiththewiringmadeasshowninthe
aboveFigure,thenwarmupthemeterformorethan20minutes.
Note:Selectathermocoupleappropriatetothiscaribration.
 (3)0℃CheckandAdjustment
  Verifythatthedisplayshows0℃withreferencevoltage
generatoroutputsetto0.00mV.
(4)SpanAdjustment
  Setreferencevoltagegeneratoroutputtoavaluethefullscale
(thefollowingtable)andifthedisplaydeviatesfromtheabove
value,turnthespanadjustmentVRuntilitdisplaysthevalue.
   Sensor Display Inputvoltage(mV)
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KC 1000℃ 41.276
JC 400℃ 21.848
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●RTDType
 Connectadecadetyperesistanceboxasshowninthefollowing
diagram
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◎Calibratethemetertheordersfownbelow.
 (1)Removethefrontpanelofthismeter.
 (2)First,turnthepowerONwiththewiringmadeasshowninthe
aboveFigure,thenwarmupthemeterformorethan20minutes.
 (3)ZeroAdjustment
  TurnthezeroadjustmentVRuntilthedisplayshows00.0℃
forthePATypeand000℃forthePJTypewiththeresistance
boxsetto100Ω
(4)SpanAdjustment
  Settheresistanceboxtoavalueasshowninthefollowingtable.
Ifthedisplaydeviatesfromtheabovevalue,turnthespan
adjustmentVRuntilitshownthevalue.
  
Model Display Pt100
Resistanceonresistancebox(Ω)
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PA 199.0℃ 175.49
PJ 600℃ 313.71
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５.Warranty
Thismeteriswarrantedforaperiodofoneyearfromdateof
delivery.Anydefectwhichoccursinthisperiodandisundoubtedly
causedbyWatanabeElectricIndustryfaultswillberemediedfree
ofcharge.
Thiswarrantydosenotapplytothemetershowingabuseordamage
whichhasbeenalteredorrepairedbyothersexceptasauthorized
byWatanabeElectricIndustry.
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６.After-saleservice
Thismeterisdeliveredafterbeingmanufactured,testedand
inspectedunderstrictqualitycontrol.
However,ifanyproblemdoseoccur,contactyournearestWatanabe
ElectricIndustrysalesagentorWatanabeElectricIndustrygiving
asmuchinformationonproblemaspossible.
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
MODELAT-501Series                  UU-47009h
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WATANABEELECTRICINDUSTRYCO.,LTD. 6-16-19,Jingumae,Shibuya-ku,Tokyo150-0001,Japan
Phone:(81)3-3400-6140
Homepagehttp://en.watanabe-electric.co.jp/
ASAHIKEIKIDIVISION
WATANABEELECTRICINDUSTRYCO.,LTD. 6-16-19,Jingumae,Shibuya-ku,Tokyo150-0001,Japan
Phone:(81)3-3400-6141
Homepagehttp://en.watanabe-electric.co.jp/