ABB FV4000 Operating Instruction page 89

Operating mode Medium
1)
Gas standard Qn
(pT)
1)
Gas stnd Qs (pT)
Gas
Gas standard
Qn (KmpF)
Gas mass 1) Qm (pT)
Gas Qv
Gas / Steam
Gas mass Qm (D)
1)
S steam Qm
Saturated
steam
S steam Qv
Qm
Qv
Qn
Pbtr Reference pressure
1) These operating modes can only be selected if the flowmeter is fitted with a temperature measurement device.
D184B097U02
Flow type
Standard flow
1.013 bar / 0 °C
0 ... 1.013 bar / 20 °
C
Standard flow
14.7 psia / 60 °F
Standard flow
1.013 bar / 0 °C
Mass flow standard
condition at 1.013
bar / 0 °C or
1.013 bar / 20 °C
Operating flow
Mass flow
Mass flow
Operating flow
Mass flow
Operating flow
Standard flow
FV4000 / FS4000
Calculation
Pbtr 273 K
= × ×
Qn Qv
+
, 1 013 bar 273 K
°
Pbtr 60 F
= × ×
Qs Qv
° +
14 7 , psia 60 F
= ×
Qn Qv Normfaktor
ρ
b
=
Normfaktor
ρ
0
= ρ ×
Qm Qn
0
Pbtr 273 K
= × ×
Qn Qv
+
, 1 013 bar 273 K
-
= × ρ
Qm Qv
b
( )
= × ρ
Qm Qv T
b b
Correction using saturated steam
table
-
β1
β2
ρ
0
ρ
b
Parameterization
Correction
parameter
Reference pressure
Pbtr abs
T
b
Temperature
measured T
b
Reference pressure
Pbtr abs
T
b
Temperature
measured T
b
Standard factor as
constant (compression
factor)
Reference pressure
Pbtr abs
Standard density p
0
Temperature
T
measured T
b
b
-
Reference density
constant ρ
b
Temperature
measured T
b
-
Volume expansion coefficient
Density compensating coefficient
Standard density
Reference density
Additional
menus that
become visible
Reference pressure
Unit of pressure
Standard condition
Reference pressure
Unit of pressure
Standard condition
Standard factor
Unit of density
Standard density
Standard condition
Reference
temperature
Pressure_Pbtr_abs
Unit Qm
-
Unit of density
Reference density
Unit Qm
Unit Qm
-
89