Emerson Micro Motion 9739 MVD

Integratethemeterwiththecontrolsystem
Frequency=Flow
TheFrequency=Flowoptionisusedtocustomizethefrequencyoutputforyourapplicationwhenyoudo
notknowappropriatevaluesforUnits/PulseorPulses/Unit.
IfyouspecifyFrequency=Flow,youmustprovidevaluesforRateFactorandFrequencyFactor:
RateFactorThemaximumowratethatyouwantthefrequencyoutputtoreport.Above
thisrate,thetransmitterwillreportA110:FrequencyOutputSaturated.
FrequencyFactorAvaluecalculatedasfollows:
where:
TFactortoconvertselectedtimebasetoseconds
NNumberofpulsesperowunit,asconguredin
thereceivingdevice
TheresultingFrequencyFactormustbewithintherangeofthefrequencyoutput(0to10,000Hz):
•IfFrequencyFactorislessthan1Hz,recongurethereceivingdeviceforahigherpulses/unitsetting.
•IfFrequencyFactorisgreaterthan10,000Hz,recongurethereceivingdeviceforalowerpulses/unit
setting.
Tip
IfFrequencyOutputScaleMethodissettoFrequency=Flow,andFrequencyOutputMaximumPulseWidthissettoa
non-zerovalue,MicroMotionrecommendssettingFrequencyFactortoavaluelessthan200Hz.
tExample:ConfigureFrequency=Flow
Youwantthefrequencyoutputtoreportallowratesupto2000kg/min.
Thefrequencyreceivingdeviceisconguredfor10pulses/kg.
Solution:
Setparametersasfollows:
•RateFactor:2000
•FrequencyFactor:333.33
126MicroMotion9739MVDTransmitters