Yokogawa EJX930A User Manual
Page 13
<2. About the EJX Multivariable Transmitter>
2-5
IM 01C25R01-01E
Table 2.2
Symbols
#
Symbol
Description
1
Qm
Mass Flow
2
Qv
Volume Flow
3
Qv_norm Normal·Standard Volume Flow
4
Nc
Unit convert factor
5
Kfactor
Basic flow Calculation factor
6
C
Discharge Coefficient
7
ε
Expansion Factor
8
β
Diameter Ratio
9
d
Diameter of orifice
10 ∆p
Differential Pressure
(Transmitter Setting unit)
11 ρb
Base Density on Tb, SPb Condition
12 ρnorm
Density on Normal, Standard condition
13 Tb
Reference temperature unit: K
14 T
Temperature unit: K
15 SPb
Reference static pressure unit: kPa abs
16 SP
Static Pressure unit: kPa abs
17 Temp K1 The density rate of change per
temperature 1degC of a density base
value (value which set 100% to 1)
For volume flow: set 0.
18 K
Compressibility factor
Flow Unit Category
Table 2.3
Mass Flow Unit (HART protocol type)
Unit
LCD
Communication
grams per second
g/s
←
grams per minute
g/m
g/min
grams per hour
g/h
←
kilograms per second
kg/s
←
kilograms per minute
kg/m
kg/min
kilograms per hour
kg/h
←
kilograms per day
kg/d
←
metric tons per minute
t/m
t/min
metric tons per hour
t/h
←
metric tons per day
t/d
←
pounds per second
lb/s
←
pounds per minute
lb/m
lb/min
pounds per hour
lb/h
←
pounds per day
lb/d
←
short tons per minute
STon/m
STon/min
short tons per hour
STon/h
←
short tons per day
STon/d
←
long tons per hour
LTon/h
←
long tons per day
LTon/d
←
Table 2.4
Normal•Standard Volume Flow Unit
(HART protocol type)
Unit
LCD
Communication
normal cubic meter per
hour
Nm3/h
←
normal liter per hour
NL/h
←
standard cubic feet per
minute
SCFM
←
standard liter per hour
SL/h
←
standard liter per minute
SL/m
SL/min
standard liter per second
SL/s
←
normal cubic meter per
day
Nm3/d
←
standard cubic feet per
day
SCFD
←
standard cubic feet per
hour
SCFH
←
standard cubic feet per
second
SCFS
←
standard cubic meter per
day
Sm3/d
←
standard cubic meter per
hour
Sm3/h
←
thousand standard cubic
feet per day
MSCFD
←
million standard cubic
feet per day
MMSCFD
←
Table 2.5
Volume Flow Unit (HART protocol type)
Unit
LCD
Communication
cubic feet per minute
CFM
←
gallons per minute
GPM
←
liters per minute
L/m
L/min
imperial gallons per
minute
IGal/m
Impgal/min
cubic meter per hour
M3/h
←
gallons per second
gal/s
←
million gallons per day
Mgal/d
←
liters per second
L/s
←
million liters per day
ML/d
←
cubic feet per second
CFS
←
cubic feet per day
ft3/d
←
cubic meters per second
M3/s
←
cubic meters per day
M3/d
←
imperial gallons per hour
IGal/h
Impgal/h
imperial gallons per day
IGal/d
Impgal/d
cubic feet per hour
CFH
←
cubic meters per minute
m3/m
m3/min
barrels per second
bbl/s
←
barrels per minute
bbl/m
bbl/min
barrels per hour
bbl/h
←
barrels per day
bbl/d
←
gallons per hour
gal/h
←
imperial gallons per
second
IGal/s
Impgal/s
liters per hour
L/h
←
gallons per day
gal/d
←