6-3
Input Calculations
Temperature:
temp lo + [(temp hi - temp lo) x (%)] = Tf
Pressure:
press lo + [(press hi - press lo) x (%)] = Pf
Analog-Orifice/Pitot:
Delta P lo + [(Delta P hi - Delta P lo) x (%)] = DP
DENSITY CALCULATIONS
Density-Liquid (liquid volume eq):
SG x DENSITY H
2
O x [1 - (C x 1.0 x 10
-6
x (Tf - Tref))] = DENSITY
Density-Liquid (liquid mass eq):
SG x DENSITY H
2
O x [1 - (C x 1.0 x 10
-6
x (Tf - Tref))]
2
= DENSITY
Density-Steam:
1/SV = DENSITY
Density-Gas English:
(2.698825 x SG x PSIA)/(Z x TEMP + 459.67) = DENSITY
Density-Gas Metric:
(3.483407 x SG x kPa)/(Z x TEMP + 273.15) = DENSITY
UNCORRECTED VOLUME FLOW CALCULATIONS
Digital:
(Hz/K) x (60 sec/1 min) = UCFLOW
Analog-Linear:
Lo Flow + [(Hi Flow - Lo Flow) x (%)] = UCFLOW
Orifice/Pitot Calculation English:
K1 x
√
DP/(DENSITY x 0.3705316202) = UCFLOW (in ACFM)
