K-Factor And Inverse K-Factor Conversions - Emerson Rosemount 3410 Series Maintenance And Troubleshooting Manual

Conversion factors
December 2023
A.2

K-Factor and inverse K-Factor conversions

Equation A-1: Frequency volumetric flow rate K-Factor
and
Equation A-2: Frequency volumetric flow rate inverse K-Factor
where
KFactor = Frequency "K-Factor" (pulses/volume
InvKFactor = Frequency "Inverse K-Factor" (volume
Freq2InvKFactor)
FreqQ
(Freq1FullScaleVolFlowRate and Freq2FullScaleVolFlowRate)
MaxFreq = Maximum frequency (Hz = pulses/time unit
Freq2MaxFrequency)
(4) Volume: Where the volume is selected via data points:
• Units System
• VolUnitUS
— gallons
— barrels
• VolUnitMetric
— cubic meters
— liters
(5) Time unit: Time conversion factor depends on the VolFlowRate Time Unit data point:
• Volume/second = 1 s/s
• Volume/minute = 60 s/m
• Volume/hour = 3600 s/h
• Volume/day = 86400 s/d
84
KFactor =
InvKFactor =
= Frequency full-scale volumetric flow rate (volume
FullScale
Maintenance and Troubleshooting manual
FreqQ FullScale
(MaxFreq)3600s § ℎr ( * )
(MaxFreq)(3600s § ℎr) ( * )
FreqQ FullScale
(4) ) (Freq1KFactor and Freq2KFactor)
(4) /pulse) (Freq1InvKFactor and
(5) ) (Freq1MaxFrequency and
00809-0200-3104
(4) /time unit (5) )
Emerson.com/Rosemount