Siemens SITRANS FC330, Руководство по эксплуатации, Страница: 211 / 280

Liquids of fluid group 1
● Pipelines according to Article 4 (a) (ii) First dash
I
II
III
Article 3
Paragraph 3
0,1 1 10 100 1000 10000
25
DN
PS = 0,5
PS = 10
PS = 500
4000
1
10
100
1000
0,5
PS [bar]
D
N
=
2
5
PS
· D
N
=
20
00
500
Figure 11-3 Diagram 3
Liquids of fluid group 2
● Pipelines according to Article 4 (a) (ii) Second dash
I
II
Article 3
Paragraph 3
0,1 1 10 100 1000 10000 DN
PS = 0,5
PS = 10
PS = 500
200
1
10
100
1000
0,5
PS [bar]
D
N
=
2
0
0
PS
· D
N
=5
00
0
500
Figure 11-4 Diagram 4
11.13 Pressure - temperature ratings
Pressure - temperature ratings are determined by process connection material and applicable
standards. The tables below detail the allowed maximum process pressure for sensor variants
with stainless steel and Hastelloy measuring tubes.
With two major exceptions, the pressure rating of the flow sensors is independent of the
process medium temperature. Design rules for flange connections in both the EN1092-1 and
ASME B16.5 standards dictate pressure derating with increasing temperature. The charts
below show the effect of process medium temperature on the pressure ratings for the flanges
within the product program.
Technical data
11.13 Pressure - temperature ratings
SITRANS FC330
Operating Instructions, 01/2019, A5E44030648-AB
211