Emerson Micro Motion 9739 MVD

Configureprocessmeasurement
5.6.3ConfigureDensityDamping
DisplayNotavailable
ProLinkII
ProLink→Conguration→Density→DensityDamping
FieldCommunicatorCongure→ManualSetup→Measurements→Density→DensityDamping
Dampingisusedtosmoothoutsmall,rapiductuationsinprocessmeasurement.TheDampingValue
speciesthetimeperiod(inseconds)overwhichthetransmitterwillspreadchangesinthereported
processvariable.Attheendoftheinterval,thereportedprocessvariablewillreect63%ofthechange
intheactualmeasuredvalue.
Tips
•Ahighdampingvaluemakestheprocessvariableappearsmootherbecausethereportedvalue
mustchangeslowly.
•Alowdampingvaluemakestheprocessvariableappearmoreerraticbecausethereported
valuechangesmorequickly.
Procedure
SetDensityDampingtothedesiredvalue.
Thedefaultvalueis1.6seconds.Therangeis0to10.24seconds.WhenyouenteravalueforFlow
Damping,thetransmitterautomaticallyroundsitdowntothenearestvalidvalue.ThevalidvaluesforFlow
Dampingare:0,0.04,0.08,0.16,...10.24.
EffectofDensityDampingonvolumemeasurement
DensityDampingaffectsliquidvolumemeasurement.DensityDampingdoesnotaffectgasstandardvolume
measurement.
InteractionbetweenDensityDampingandAddedDamping
DensityDampingcontrolstherateofchangeinthedensityprocessvariable.AddedDampingcontrolsthe
rateofchangereportedviathemAoutput.IfmAOutputProcessVariableissettoDensity,andbothDensity
DampingandAddedDampingaresettonon-zerovalues,densitydampingisappliedrst,andtheadded
dampingcalculationisappliedtotheresultoftherstcalculation.
5.6.4ConfigureDensityCutoff
DisplayNotavailable
ProLinkII
ProLink→Conguration→Density→LowDensityCutoff
FieldCommunicatorCongure→ManualSetup→Measurements→Density→DensityCutoff
DensityCutoffspeciesthelowestdensityvaluethatwillreportedasmeasured.Alldensityvaluesbelow
thiscutoffwillbereportedas0.
ConfigurationandUseManual
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