Yokogawa 415 Steam and Gas User Manual
Page 6
Symbol Description
SI Units
US Units
P
F
Pressure at flow conditions.
kPa (abs)
psia
Q
E
Energy value of steam.
MJ/day
MJ/hr
MJ/min
MJ/sec
BTU x 1000/day
BTU x 1000/hr
BTU x 1000/min
BTU x 1000/sec
Q
M
Mass Flowrate.
kg/day
kg/hr
kg/min
kg/sec
lbs/day
lbs/hr
lbs/min
lbs/sec
Q
VB
Volume Corrected Flowrate.
m
3
/day
m
3
/hr
m
3
/min
m
3
/sec
ft
3
/day
ft
3
/hr
ft
3
/min
ft
3
/sec
Note: If the corrected flowrate is at standard base conditions, then the
flow will be in scm or scf (ie. standard cubic meters or feet).
If the corrected flowrate is at normalised base conditions, then the
flow will be in Nm
3
(ie. Normalised cubic meters).
S
M
Span (Mass Flowrate at 20mA).
kg/day
kg/hr
kg/min
kg/sec
lbs/day
lbs/hr
lbs/min
lbs/sec
S
V
Span for a volumetric flowmeter (eg
vortex).
m
3
/day
m
3
/hr
m
3
/min
m
3
/sec
ft
3
/day
ft
3
/hr
ft
3
/min
ft
3
/sec