ABB FS4000, Operating Instruction

Page: 87 / 126

Parameterization
D184B097U02 FV4000 / FS4000 87
8.7.5 Standard factor
Under constant operating conditions (constant pressure and temperature), the standard factor
can be entered here.
The standard factor is defined as the ratio between standard flow and operating flow:
Standard factor =
) T 273 (
273
bar 013 , 1
) p bar 013 , 1 (
Qv
Qn
+
×
+
=
Since the mass flow is constant, the following formula applies:
N
V
Qv
Qn
ρ
ρ
=
Qn Standard flow
Qv Operating
flow
P Operating pressure [bar ü]
T Temperature [°C]
ρ V Operating density
ρ N Standard density
8.7.6 Operating density
Please refer to the "AP-Calc" product selection and dimensioning program, which ABB provides
free of charge.