Configureprocessmeasurement
Table5-12Standardconcentrationcurvesandassociatedmeasurementunits
continued
CurvenameDescriptionDensityunitTemperature
unit
Concentration
unit
HFCS90Curverepresentsahydrometerscale
forHFCS90(highfructosecorn
syrup)solutionsthatindicatesthe
percentbymassofHFCSinsolution.
g/cm3°C%
5.10.3Derivedvariablesandcalculatedprocessvariables
Whenyouconguretheconcentrationmeasurementapplication,yourchoiceofDerivedVariable
determinestheprocessvariablesthatwillbecalculatedbytheapplication.
Table5-13liststheoptionsforDerivedVariable,andthesetofprocessvariablesthatarecalculated
foreachoption.
Table5-13Derivedvariablesandcalculatedprocessvariables
Calculatedprocessvariables
DerivedVariableDescription
Densityat
reference
tempera-
ture
Standard
volume
flowrate
Specific
gravity
Concen-
tration
Netmass
flowrate
Net
volume
flowrate
Densityatreference
temperature
Mass/unit
volume,
correctedtoa
givenreference
temperature
üü
SpecicgravityTheratioof
thedensity
ofaprocess
uidatagiven
temperatureto
thedensityof
wateratagiven
temperature.
Thetwogiven
temperature
conditionsdo
notneedtobe
thesame.
üüü
Massconcentration
derivedfrom
referencedensity
Thepercent
massofsolute
orofmaterialin
suspensionin
thetotalsolution,
derivedfrom
referencedensity
üüüü
96
MicroMotion9739MVDTransmitters