Honeywell SMV 3000 User Manual page 11

A' d ................................................................................................................................... Area of orifice
A' u ...................................................................................................................................... Area of pipe
C .................................................................................. Flow coefficient or orifice discharge coefficient
d 1 ...................................................................................................................... Inside diameter of pipe
d 2 ........................................................................... Orifice plate bore diameter at flowing temperature
d o ................................................................................................................... Inside diameter of orifice
E v ................................................................................................................Velocity of approach factor
F pv ............................................................................................................ Super compressibility factor
g ......................................................................................................................... Acceleration of gravity
K q ........................................................................... Scaling factor for volumetric flow in PV4 algorithm
K w .................................................................................. Scaling factor for mass flow in PV4 algorithm
N c ......................................................................................................................Units conversion factor
P.............................................................................................................................................. Pressure
P a .......................................................................................Measured static pressure in PV4 algorithm
P c ..................................................................................................Absolute critical pressure of the gas
P d ................................................................................................. Static pressure at downstream point
P dp ........................................................... Measured differential pressure in Pascals in PV4 algorithm
P f ....................................................................................................... Absolute pressure of flowing gas
P r ............................................................................................................................. Reduced pressure
P u ......................................................................................................Static pressure at upstream point
Q h .......................................................................................... Volumetric rate of flow in PV4 algorithm
Qs ...................................................................................................................................... Rate of flow
R ...................................................................................................................................... Gas constant
T .......................................................................................................................... Absolute temperature
T a ............................................................................... Measure process temperature in PV4 algorithm
T c ............................................................................................ Absolute critical temperature of the gas
T f .................................................................................................. Absolute temperature of flowing gas
T r .........................................................................................................................Reduced temperature
T ref ............................................................... Absolute temperature of reference flow in PV4 algorithm
v ................................................................................................................................... Specific volume
V d .................................................................................................... Fluid velocity at downstream point
V u ......................................................................................................... Fluid velocity at upstream point
W h ...................................................................................................Mass rate of flow in PV4 algorithm
Y..................................................................................................................................Expansion factor
Z .......................................................................................................................... Compressibility factor
gamma ........................................................................................................................... Fluid density
act
des
r ........................................................................................ Density of fluid under reference conditions
1/99
Parameters
SMV 3000 Transmitter User's Manual
Density
Actual density in PV4 algorithm
Design density in PV4 algorithm
xi