Flowmetrics 922-MFC Installation And Operating Instructions Manual page 70

FORMULAS:
GAS:
English
K1 = ACFM x sqrt[ (SG x PSIA) / (Z x T x inH
K1 = SCFM x 0.028279 x sqrt[SG x (459.67 + °F) x Z / (PSIA x inH
K1 = PPM x 0.370532 x sqrt[(459.67 + °F) x Z / SG x PSIA x inH
Metric
K1 = (NM
STEAM:
English
K1 = ACFM / sqrt[ 2.698825 x SVOL x inH
K1 = PPH x 0.0101452 x sqrt (SVOL / inH
Metric
K1= 0.451592 x Kg/hr x sqrt(SVOL / mmH
LIQUID:
English
K1 = (GPM x 0.642625) x sqrt[SG / inH
K1 = PPM x 0.077079 / sqrt(SG x inH
Metric
K1 = 51.36577 x liter/sec x sqrt (SG / mmH
WHERE :
ACFM = Actual Cubic Feet Per Minute
SG = The Specific Gravity @ base conditions
PSIA = PSIG + Barometric pressure
Z = Gas Compressibility Factor
°F + 459.67 or (°C + 273.17)
T =
inH O = Inches of Water from Differential Pressure Device
2
Millimeters of Water from Differential Pressure Device
mmH O =
2
SCFM= Standard cubic feet/ minute (i.e. at 60
lbm/min=Pounds-Mass per minute = (lbm/hr÷60)
sqrt[ ] = take the square root of what is inside the brackets
SVOL = Specific Volume at operating pressure and temperature.
English = ft
PPM = Pounds per Minute
PPH = Pounds per Hour
3 /h) x (0.3123483) x sqrt[(SG x Z x T) / (Kpa x mmH
3
/lb Metric = M
2
O ]
2
O)
2
O)
2
O]
2
O)
2
O)
2
3
/Kg
6-5
O) ]
O)]
2
0
F, 14.696 PSI)
O)]
2
O]
2