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ManualVortexFlowmeterVYseries

InstallationManual

ManualChangeNo.23-0010-E

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PleasereplacetothecontentsdescribedbelowfortheIM01F07A01-01EN(3rd)，

No.|PageDelete/InvalidDescription

31@LoadresistanceRforpulseoutput|AddexplanationofOptionalcode/LAT

2|386.3.2OperationwhenanerroroOCCurs

Seebelow:AL-032,AL033，Note(y)

量ProcessAlarm

外LoadresistanceRforpulseoutput

Useformulas(1)and(2)tocalculatetheloadresistanceandpowerandselecttheresistance.

ECV)_0.1本

80mA)和RD)ChF)xf(kHz)三

P(mW)=OO)

E:Powersupplyvoltage(V)

C:Cablecapacitance(人F)(forCEVcable,C=0.1从Fikm)

下Pulseoutputfrequency(kHz)

P:Resistorpower(mW)

R:Loadresistanceforpulseoutput(kO)

fthemeasurementisaffectedbychangesinthedutycycleduetotheexternalenvironment,reducethe

valueofthepulseoutputloadresistance.

NOTE

Whentheambienttemperatureislow(-40Yto-50并,optionalcode/LAT)andtheloadresistanceis10

kQormore,thedutycycleofthepulseoutputbecomesabout15%,andthehightimeisshort(minimum

150hsh,thereforeitmaybedifficulttoreceivedatawithacounteretc.,ordatareceptionbyacounter

etc.cannotbeperformedorbecomesunstable,pleasereducetheloadresistance{internalresistanceof

thecountenetc.,cablelength,etc.)to10kOorless,oruseapulsesignalrepeater,

YOKOGAWA令June30,2023

YbkogawaElectricCorporation

四ProcessAlarms

Thedeviceisnormalbuthasmalfunctionedandnormalmeasurementisnotpossibleduetoprocess-

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