Manual
1 Technical Description
1.5 Functional Description
1.5.8 Complex Functions (Arithmetic blocks c, d, h)
SIPART DR24 6DR2410
C79000-G7476-C153-03
59
F
=
ρ
ρ
B
=
V
B
V
with V
=
1
ρ
as specific volume.
In order to be able to perform the correction with the factor F, the current specific volume must
be determined first.
For the dry gases the densities change according to the laws for ideal gases:
The correction factor is then given as:
V
=
R Tp
=
1
ρ
F
=
T
B
· p
p
B
· T
with p as absolute pressure and T as absolute temperature.
P
abs.A
V
B
q
Flow
ρ
Density
Δ
p
Active pressure
p
Pressure
Â
Temperature (
_
C)
T
Temperature (K)
V
Specific volume
K
Flow coefficient
R
Gas constant
F
Correction factor f (p, T)
Indices
:
A
Start
E
End
B
Calculation state
abs
Absolute variable
m
Ground
v
Volume
V
m
3
/kg
Correction range
P
abs.A
to P
abs.E
Range of the pressure transmitter
Â
A
to
Â
E
Range of the temperature transmitter
Â
A
Â
B
Â
E
_
C
Â
P
abs.E
P
abs.B
P
abs.
bar
Figure 1--27 Display of the correction range
This gives for the corrected flow
q
=
F ·K ·
ρ
B
·
Δ
p
=
K ·
ρ
B
·
Δ
p
·
T
B
· p
P
B
· T
The factor contained in the formula K ·
ρ
B
is already taken into account in the measurement
of the active pressure and can therefore be ignored by the computer.
Summary of Contents for 6DR2410
Page 2: ......
Page 3: ...SIPART DR24 6DR2410 C79000 G7476 C153 03 1 SIPART DR24 6DR2410 Edition 12 2006 Manual ...
Page 170: ...4 Commissioning 4 2 Test Manual 168 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 178: ...6 Ordering Data Manual 176 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 199: ...Manual 8 Programming Aids SIPART DR24 6DR2410 C79000 G7476 C153 03 197 ...
Page 202: ...8 Programming Aids Manual 200 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 204: ...8 Programming Aids Manual 202 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 206: ...8 Programming Aids Manual 204 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 208: ...8 Programming Aids Manual 206 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 210: ...8 Programming Aids Manual 208 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 212: ...8 Programming Aids Manual 210 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 214: ...8 Programming Aids Manual 212 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 216: ...8 Programming Aids Manual 214 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 218: ...8 Programming Aids Manual 216 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 220: ...8 Programming Aids Manual 218 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 222: ...8 Programming Aids Manual 220 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 224: ...8 Programming Aids Manual 222 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 226: ...8 Programming Aids Manual 224 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 228: ...8 Programming Aids Manual 226 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 230: ...8 Programming Aids Manual 228 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 232: ...8 Programming Aids Manual 230 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 234: ...8 Programming Aids Manual 232 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 236: ...8 Programming Aids Manual 234 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 238: ...8 Programming Aids Manual 236 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 240: ...8 Programming Aids Manual 238 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 242: ...8 Programming Aids Manual 240 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 244: ...8 Programming Aids Manual 242 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 246: ...8 Programming Aids Manual 244 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 248: ...8 Programming Aids Manual 246 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 250: ...8 Programming Aids Manual 248 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 252: ...8 Programming Aids Manual 250 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 254: ...8 Programming Aids Manual 252 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 256: ...8 Programming Aids Manual 254 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 258: ...8 Programming Aids Manual 256 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 260: ...8 Programming Aids Manual 258 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 262: ...8 Programming Aids Manual 260 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 274: ...Manual 272 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
Page 275: ......