API Flowrates

API MPMS Chapter 12.2, Flowrates

This calculation is used to obtain the flowrates for a pulse generating meter.


Indicated Volume


API_12.2Flowrates_IV

Symbol Description Units
qiv Indicated volume m3/hr
f Pulse frequency Hz
MKF Meter-K Factor pulse/m3
ΔQiv Indicated volume increment m3
ΔPulse Pulse count increment -
Qiv Indicated volume total m3

Gross Volume


API_12.2Flowrates_Gross

Symbol Description Units
qv Gross volume flowrate m3/hr
qiv Indicated volume m3/hr
MF Meter Factor -
ΔQv Gross volume increment m3
ΔQiv Indicated volume increment m3
Qv Gross volume total m3

Mass Flowrate


API_12.2Flowrates_Mass

Symbol Description Units
qm Mass flowrate t/hr
qv Gross volume flowrate m3/hr
ρstd Standard density kg/Sm3
Ctl Temperature correction factor -
Cpl Pressure correction factor -
ΔQm Mass increment t
ΔQv Gross volume increment m3
Qm Mass total t

Standard Volume Flowrate


API_12.2Flowrates_Standard

Symbol Description Units
qs Standard volume flowrate Sm3/hr
qv Gross volume flowrate m3/hr
Ctl Temperature correction factor -
Cpl Pressure correction factor -
ΔQs Standard volume increment Sm3
ΔQv Gross volume increment m3
Qs Standard volume total Sm3

References